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<!--Created on: 3/2/2014 1:17:42 PM-->
<!--Modified on: 3/2/2014 1:17:42 PM-->
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredRentReceivablesNet" xlink:to="us-gaap_DeferredRentReceivablesNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xml:lang="en-US">Unbilled rents receivable, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US">Deferred charges, goodwill and other assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US">Total deferred charges, goodwill and other assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="us-gaap_RestrictedCashAndCashEquivalents" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalents" xlink:to="us-gaap_RestrictedCashAndCashEquivalents_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US">Restricted Cash And Cash Equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US">Total restricted cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xml:lang="en-US">Restricted cash</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsReceivableNet" xlink:label="us-gaap_AccountsReceivableNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsReceivableNet" xlink:to="us-gaap_AccountsReceivableNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsReceivableNet_lbl" xml:lang="en-US">Accounts Receivable Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccountsReceivableNet_lbl" xml:lang="en-US">Accounts receivable, net of allowance for doubtful accounts of $2,832 and $2,614</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">Total assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US">Total assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US">LIABILITIES AND EQUITY</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UnsecuredDebt" xlink:label="us-gaap_UnsecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnsecuredDebt" xlink:to="us-gaap_UnsecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UnsecuredDebt_lbl" xml:lang="en-US">Unsecured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_UnsecuredDebt_lbl" xml:lang="en-US">Senior Unsecured Notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_UnsecuredDebt_lbl" xml:lang="en-US">Senior unsecured notes</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecuredDebt" xlink:label="us-gaap_SecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredDebt" xlink:to="us-gaap_SecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecuredDebt_lbl" xml:lang="en-US">Secured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SecuredDebt_lbl" xml:lang="en-US">Mortgages, loans payable and other obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SecuredDebt_lbl" xml:lang="en-US">Mortgage loan</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:to="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">Dividends and distributions payable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US">Accounts payable, accrued expenses and other liabilities</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RentsReceivedInAdvanceAndSecurityDeposits" xlink:label="cli_RentsReceivedInAdvanceAndSecurityDeposits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RentsReceivedInAdvanceAndSecurityDeposits" xlink:to="cli_RentsReceivedInAdvanceAndSecurityDeposits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RentsReceivedInAdvanceAndSecurityDeposits_lbl" xml:lang="en-US">Amount at the balance sheet date including both: (a) rents and other amounts paid in advance by tenants and clients; and (b) security deposits paid in advance to protect the provider of a service, such as a lessor, against damage or nonpayment by the tenant (lessee) during the term of the agreement.  Such damages may include physical damage to the property, theft of property, and other contractual breaches.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RentsReceivedInAdvanceAndSecurityDeposits_lbl" xml:lang="en-US">Rents received in advance and security deposits</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestPayableCurrentAndNoncurrent" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrentAndNoncurrent" xlink:to="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xml:lang="en-US">Accrued interest payable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US">Total liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US">Total liabilities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US">Commitments And Contingencies 2009</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US">Commitments and contingencies</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xml:lang="en-US">Equity:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="us-gaap_StockholdersEquityAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US">Stockholders' Equity Attributable to Parent [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US">Mack-Cali Realty Corporation stockholders' equity:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US">Common stock value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CommonStockValue_lbl" xml:lang="en-US">Common stock, $0.01 par value, 190,000,000 shares authorized, 88,247,591 and 87,536,292 shares outstanding</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapital" xlink:to="us-gaap_AdditionalPaidInCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US">Additional Paid In Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xml:lang="en-US">Additional paid-in capital</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US">Retained Earnings Accumulated Deficit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US">Dividends in excess of net earnings</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Stockholders' Equity Attributable to Parent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquity_lbl" xml:lang="en-US">Total Mack-Cali Realty Corporation stockholders' equity</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestItemsAbstract" xlink:label="us-gaap_NoncontrollingInterestItemsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestItemsAbstract" xlink:to="us-gaap_NoncontrollingInterestItemsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncontrollingInterestItemsAbstract_lbl" xml:lang="en-US">Noncontrolling Interest Items [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NoncontrollingInterestItemsAbstract_lbl" xml:lang="en-US">Noncontrolling interests in subsidiaries:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestInOperatingPartnerships" xlink:label="us-gaap_MinorityInterestInOperatingPartnerships" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestInOperatingPartnerships" xlink:to="us-gaap_MinorityInterestInOperatingPartnerships_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestInOperatingPartnerships_lbl" xml:lang="en-US">Operating Partnership</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestInJointVentures" xlink:label="us-gaap_MinorityInterestInJointVentures" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestInJointVentures" xlink:to="us-gaap_MinorityInterestInJointVentures_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestInJointVentures_lbl" xml:lang="en-US">Minority Interest In Joint Ventures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinorityInterestInJointVentures_lbl" xml:lang="en-US">Consolidated joint ventures</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterest" xlink:label="us-gaap_MinorityInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterest" xlink:to="us-gaap_MinorityInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterest_lbl" xml:lang="en-US">Total noncontrolling interests in subsidiaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_MinorityInterest_lbl" xml:lang="en-US">Total noncontrolling interests in subsidiaries</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Total equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Balance, value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Balance, value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Total equity</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US">Liabilities And Stockholders Equity</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US">Allowance for doubtful accounts receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable_lbl" xml:lang="en-US">Allowance for doubtful accounts receivable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US">Common stock, par value per share</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xml:lang="en-US">Common stock, shares authorized</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US">Common Stock Shares Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xml:lang="en-US">Common stock, shares outstanding</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US">Consolidated Statements Of Operations [Abstract]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US">Revenues Abstract</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US">REVENUES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesIncomeStatementLeaseRevenue" xlink:label="us-gaap_OperatingLeasesIncomeStatementLeaseRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesIncomeStatementLeaseRevenue" xlink:to="us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_lbl" xml:lang="en-US">Base rents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_lbl" xml:lang="en-US">Lease revenue</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TenantReimbursements" xlink:label="us-gaap_TenantReimbursements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TenantReimbursements" xlink:to="us-gaap_TenantReimbursements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TenantReimbursements_lbl" xml:lang="en-US">Escalations and recoveries from tenants</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GeneralContractorRevenue" xlink:label="us-gaap_GeneralContractorRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralContractorRevenue" xlink:to="us-gaap_GeneralContractorRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralContractorRevenue_lbl" xml:lang="en-US">Construction services</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherRealEstateRevenue" xlink:label="us-gaap_OtherRealEstateRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherRealEstateRevenue" xlink:to="us-gaap_OtherRealEstateRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherRealEstateRevenue_lbl" xml:lang="en-US">Other Real Estate Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OtherRealEstateRevenue_lbl" xml:lang="en-US">Real estate services</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ParkingRevenue" xlink:label="us-gaap_ParkingRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ParkingRevenue" xlink:to="us-gaap_ParkingRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ParkingRevenue_lbl" xml:lang="en-US">Parking Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ParkingRevenue_lbl" xml:lang="en-US">Parking income</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherOperatingIncome" xlink:label="us-gaap_OtherOperatingIncome" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherOperatingIncome" xlink:to="us-gaap_OtherOperatingIncome_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherOperatingIncome_lbl" xml:lang="en-US">Other income</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateRevenueNet" xlink:label="us-gaap_RealEstateRevenueNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateRevenueNet" xlink:to="us-gaap_RealEstateRevenueNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateRevenueNet_lbl" xml:lang="en-US">Real Estate Revenue, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateRevenueNet_lbl" xml:lang="en-US">Total revenues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_RealEstateRevenueNet_lbl" xml:lang="en-US">Total revenues</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CostOfRevenueAbstract" xlink:label="us-gaap_CostOfRevenueAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfRevenueAbstract" xlink:to="us-gaap_CostOfRevenueAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostOfRevenueAbstract_lbl" xml:lang="en-US">EXPENSES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateTaxExpense" xlink:label="us-gaap_RealEstateTaxExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateTaxExpense" xlink:to="us-gaap_RealEstateTaxExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateTaxExpense_lbl" xml:lang="en-US">Real estate taxes</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_UtilitiesCosts" xlink:label="us-gaap_UtilitiesCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UtilitiesCosts" xlink:to="us-gaap_UtilitiesCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_UtilitiesCosts_lbl" xml:lang="en-US">Utilities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingCostsAndExpenses" xlink:label="us-gaap_OperatingCostsAndExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingCostsAndExpenses" xlink:to="us-gaap_OperatingCostsAndExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingCostsAndExpenses_lbl" xml:lang="en-US">Operating services</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GeneralContractorCosts" xlink:label="us-gaap_GeneralContractorCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralContractorCosts" xlink:to="us-gaap_GeneralContractorCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralContractorCosts_lbl" xml:lang="en-US">Direct construction costs</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CostsOfRealEstateServices" xlink:label="cli_CostsOfRealEstateServices" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CostsOfRealEstateServices" xlink:to="cli_CostsOfRealEstateServices_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CostsOfRealEstateServices_lbl" xml:lang="en-US">The aggregate costs including administrative paperwork, real estate brokerage, title, and property management operations.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CostsOfRealEstateServices_lbl" xml:lang="en-US">Costs Of Real Estate Services</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CostsOfRealEstateServices_lbl" xml:lang="en-US">Real estate services expenses</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US">General and administrative</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="us-gaap_DepreciationAndAmortization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationAndAmortization" xlink:to="us-gaap_DepreciationAndAmortization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xml:lang="en-US">Depreciation and amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xml:lang="en-US">Depreciation and amortization</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:label="us-gaap_AssetImpairmentCharges" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetImpairmentCharges" xlink:to="us-gaap_AssetImpairmentCharges_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xml:lang="en-US">Impairment charge</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xml:lang="en-US">Impairments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xml:lang="en-US">Impairments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CostsAndExpenses" xlink:label="us-gaap_CostsAndExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_CostsAndExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CostsAndExpenses_lbl" xml:lang="en-US">Costs and Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CostsAndExpenses_lbl" xml:lang="en-US">Total expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CostsAndExpenses_lbl" xml:lang="en-US">Total expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">Operating income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">Operating Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US">Operating income</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US">OTHER (EXPENSE) INCOME</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US">Interest expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_InterestExpense_lbl" xml:lang="en-US">Interest expense</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InvestmentIncomeInterestAndDividend" xlink:label="us-gaap_InvestmentIncomeInterestAndDividend" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentIncomeInterestAndDividend" xlink:to="us-gaap_InvestmentIncomeInterestAndDividend_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InvestmentIncomeInterestAndDividend_lbl" xml:lang="en-US">Interest and other investment income</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromEquityMethodInvestments" xlink:to="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US">Equity in earnings (loss) of unconsolidated joint ventures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US">Equity in loss (earnings) of unconsolidated joint venture, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US">Company's equity in earnings (loss) of unconsolidated joint ventures</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xml:lang="en-US">Gains (Losses) on Extinguishment of Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_lbl" xml:lang="en-US">Loss from early extinguishment of debt</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="us-gaap_NonoperatingIncomeExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US">Nonoperating Income (Expense)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US">Total other (expense) income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xml:lang="en-US">Total other (expense) income</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Income from continuing operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Income (loss) from continuing operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US">Income (loss) from continuing operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract" xlink:label="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract" xlink:to="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_lbl" xml:lang="en-US">Discontinued Operations [Abstract]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_lbl" xml:lang="en-US">Discontinued operations:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax" xlink:to="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xml:lang="en-US">Income (loss) from discontinued operations for diluted earnings per share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xml:lang="en-US">Income from discontinued operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_lbl" xml:lang="en-US">Income from discontinued operations</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt" xlink:label="cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt" xlink:to="cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt_lbl" xml:lang="en-US">Discontinued Operation, Gains Losses On Extinguishment Of Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt_lbl" xml:lang="en-US">Discontinued Operation, Gains Losses On Extinguishment Of Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt_lbl" xml:lang="en-US">Loss from early extinguishment of debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DiscontinuedOperationGainsLossesOnExtinguishmentOfDebt_lbl" xml:lang="en-US">Loss from early extinguishment of debt</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:label="us-gaap_GainLossOnDispositionOfAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfAssets" xlink:to="us-gaap_GainLossOnDispositionOfAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US">Realized (gains) and unrealized losses on disposition of rental proeprty, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US">Realized (gains) and unrealized losses on disposition of rental property and impairments, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US">Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xml:lang="en-US">Realized gains (losses) and unrealized losses on disposition of rental property and impairments, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:to="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_lbl" xml:lang="en-US">Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_lbl" xml:lang="en-US">Total discontinued operations, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_lbl" xml:lang="en-US">Total discontinued operations, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax_lbl" xml:lang="en-US">Income from discontinued operations for diluted earnings per share</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net income (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProfitLoss_lbl" xml:lang="en-US">Net income (loss)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable" xlink:to="us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable_lbl" xml:lang="en-US">Noncontrolling interest in consolidated joint ventures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable_lbl" xml:lang="en-US">Add: Noncontrolling interest in consolidated joint ventures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable_lbl" xml:lang="en-US">Noncontrolling interest in consolidated joint ventures</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable" xlink:to="us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable_lbl" xml:lang="en-US">Noncontrolling interest in operating partnership</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable_lbl" xml:lang="en-US">Noncontrolling interest in Operating Partnership</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable_lbl" xml:lang="en-US">Deduct: Noncontrolling interest in Operating Partnership</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable_lbl" xml:lang="en-US">Add: Noncontrolling interest in Operating Partnership</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NoncontrollingInterestInDiscontinuedOperations" xlink:label="cli_NoncontrollingInterestInDiscontinuedOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NoncontrollingInterestInDiscontinuedOperations" xlink:to="cli_NoncontrollingInterestInDiscontinuedOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NoncontrollingInterestInDiscontinuedOperations_lbl" xml:lang="en-US">Amount of net income (loss) for the period allocated to noncontrolling partners in discontinued operations included in the entity's consolidated financial statements.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NoncontrollingInterestInDiscontinuedOperations_lbl" xml:lang="en-US">Noncontrolling interest in discontinued operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_NoncontrollingInterestInDiscontinuedOperations_lbl" xml:lang="en-US">Noncontrolling interest in discontinued operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="us-gaap_DividendsPreferredStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPreferredStock" xlink:to="us-gaap_DividendsPreferredStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPreferredStock_lbl" xml:lang="en-US">Preferred stock dividends</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DividendsPreferredStock_lbl" xml:lang="en-US">Deduct: Preferred stock dividends</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="us-gaap_DividendsPreferredStock_lbl" xml:lang="en-US">Preferred stock dividends</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net income (loss) available to common shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net income available to common shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US">Net income (loss) available to common shareholders</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="us-gaap_EarningsPerShareBasicAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasicAbstract" xlink:to="us-gaap_EarningsPerShareBasicAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xml:lang="en-US">Basic earnings per common share:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:to="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xml:lang="en-US">Income (loss) from continuing operations available to common shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xml:lang="en-US">Income (loss) from continuing operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:to="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xml:lang="en-US">Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xml:lang="en-US">Discontinued operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xml:lang="en-US">Income from discontinued operations available to common shareholders</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Net income available to common shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Net income (loss) available to common shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xml:lang="en-US">Net income (loss) available to common shareholders</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="us-gaap_EarningsPerShareDilutedAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDilutedAbstract" xlink:to="us-gaap_EarningsPerShareDilutedAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xml:lang="en-US">Diluted earnings per common share:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:to="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xml:lang="en-US">Income Loss From Continuing Operations Per Diluted Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xml:lang="en-US">Income (loss) from continuing operations</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityComponentDomain_lbl" xml:lang="en-US">Equity Component [Domain]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockMember_lbl" xml:lang="en-US">Common Stock [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_SharesIssued_lbl" xml:lang="en-US">Balance, shares</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xml:lang="en-US">Common unit distributions</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Stock Issued During Period, Value, New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xml:lang="en-US">Common stock offering, value</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Stock Issued During Period, Shares, New Issues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xml:lang="en-US">Common stock offering, shares</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US">Stock Compensation, value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl" xml:lang="en-US">Stock compensation, value</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xml:lang="en-US">Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xml:lang="en-US">Stock compensation, shares</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AccruedRedemptionOfPreferredStock" xlink:label="cli_AccruedRedemptionOfPreferredStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AccruedRedemptionOfPreferredStock" xlink:to="cli_AccruedRedemptionOfPreferredStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AccruedRedemptionOfPreferredStock_lbl" xml:lang="en-US">Accrued Redemption Of Preferred Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AccruedRedemptionOfPreferredStock_lbl" xml:lang="en-US">Accrued Redemption Of Preferred Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AccruedRedemptionOfPreferredStock_lbl" xml:lang="en-US">Redemption of preferred stock, value</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AccruedRedemptionOfPreferredStockShares" xlink:label="cli_AccruedRedemptionOfPreferredStockShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AccruedRedemptionOfPreferredStockShares" xlink:to="cli_AccruedRedemptionOfPreferredStockShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AccruedRedemptionOfPreferredStockShares_lbl" xml:lang="en-US">Accrued Redemption Of Preferred Stock Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AccruedRedemptionOfPreferredStockShares_lbl" xml:lang="en-US">Accrued Redemption Of Preferred Stock Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_AccruedRedemptionOfPreferredStockShares_lbl" xml:lang="en-US">Redemption of preferred stock, shares</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodValue" xlink:to="us-gaap_StockRepurchasedDuringPeriodValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xml:lang="en-US">Stock Repurchased During Period, Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xml:lang="en-US">Repurchase of common stock, value</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedDuringPeriodShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xml:lang="en-US">Stock Repurchased During Period, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xml:lang="en-US">Repurchase of common stock, shares</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:label="us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance" xlink:to="us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance_lbl" xml:lang="en-US">Rebalancing of ownership percentage between parent and subsidiaries</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US">Consolidated Statements Of Cash Flows [Abstract]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">CASH FLOWS FROM OPERATING ACTIVITIES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US">Adjustments to reconcile net income (loss) to net cash provided by Operating activities:</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="us-gaap_DepreciationDepletionAndAmortization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortization" xlink:to="us-gaap_DepreciationDepletionAndAmortization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xml:lang="en-US">Depreciation and amortization, including related intangible assets</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DepreciationAmortizationOnDiscontinuedOperations" xlink:label="cli_DepreciationAmortizationOnDiscontinuedOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DepreciationAmortizationOnDiscontinuedOperations" xlink:to="cli_DepreciationAmortizationOnDiscontinuedOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DepreciationAmortizationOnDiscontinuedOperations_lbl" xml:lang="en-US">Depreciation Amortization On Discontinued Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DepreciationAmortizationOnDiscontinuedOperations_lbl" xml:lang="en-US">Depreciation Amortization On Discontinued Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:label="cli_DepreciationAmortizationOnDiscontinuedOperations_lbl" xml:lang="en-US">Depreciation and amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DepreciationAmortizationOnDiscontinuedOperations_lbl" xml:lang="en-US">Depreciation and amortization on discontinued operations</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AmortizationOfDeferredStockUnits" xlink:label="cli_AmortizationOfDeferredStockUnits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AmortizationOfDeferredStockUnits" xlink:to="cli_AmortizationOfDeferredStockUnits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AmortizationOfDeferredStockUnits_lbl" xml:lang="en-US">Amortization Of Deferred Stock Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AmortizationOfDeferredStockUnits_lbl" xml:lang="en-US">Amortization Of Deferred Stock Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AmortizationOfDeferredStockUnits_lbl" xml:lang="en-US">Amortization of deferred stock units</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Stock compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensation_lbl" xml:lang="en-US">Amortization of stock compensation</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:to="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfFinancingCostsAndDiscounts_lbl" xml:lang="en-US">Amortization of deferred financing costs and debt discount</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:to="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" xml:lang="en-US">Write off of Deferred Debt Issuance Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" xml:lang="en-US">Write off of unamortized deferred financing costs related to early extinguishment of debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" xml:lang="en-US">Write off of unamortized deferred financing costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions" xlink:label="us-gaap_EquityMethodInvestmentDividendsOrDistributions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentDividendsOrDistributions" xlink:to="us-gaap_EquityMethodInvestmentDividendsOrDistributions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentDividendsOrDistributions_lbl" xml:lang="en-US">Equity Method Investment Dividends Or Distributions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EquityMethodInvestmentDividendsOrDistributions_lbl" xml:lang="en-US">Distributions of cumulative earnings from unconsolidated joint ventures</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US">Changes in operating assets and liabilities:</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_IncreaseDecreaseInUnbilledRentReceivables" xlink:label="cli_IncreaseDecreaseInUnbilledRentReceivables" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_IncreaseDecreaseInUnbilledRentReceivables" xlink:to="cli_IncreaseDecreaseInUnbilledRentReceivables_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_IncreaseDecreaseInUnbilledRentReceivables_lbl" xml:lang="en-US">Increase Decrease In Unbilled Rent Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_IncreaseDecreaseInUnbilledRentReceivables_lbl" xml:lang="en-US">Increase Decrease In Unbilled Rent Receivables</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_IncreaseDecreaseInUnbilledRentReceivables_lbl" xml:lang="en-US">Increase in unbilled rents receivable, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Increase in deferred charges and other assets, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US">Increase in deferred charges, goodwill and other assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInLeasingReceivables" xlink:label="us-gaap_IncreaseDecreaseInLeasingReceivables" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInLeasingReceivables" xlink:to="us-gaap_IncreaseDecreaseInLeasingReceivables_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInLeasingReceivables_lbl" xml:lang="en-US">(Increase) decrease in accounts receivable, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInLeasingReceivables_lbl" xml:lang="en-US">Decrease (increase) in accounts receivable, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xml:lang="en-US">Increase (decrease) in accounts payable, accrued expenses and other liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xml:lang="en-US">(Decrease) increase in accounts payable, accrued expenses and other liabilities</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_IncreaseDecreaseInRentsReceivedInAdvanceAndSecurityDeposits" xlink:label="cli_IncreaseDecreaseInRentsReceivedInAdvanceAndSecurityDeposits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_IncreaseDecreaseInRentsReceivedInAdvanceAndSecurityDeposits" xlink:to="cli_IncreaseDecreaseInRentsReceivedInAdvanceAndSecurityDeposits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_IncreaseDecreaseInRentsReceivedInAdvanceAndSecurityDeposits_lbl" xml:lang="en-US">The net change during the reporting period in the amount at the balance sheet date including both: (a) rents and other amounts paid in advance by tenants and clients; and (b) security deposits paid in advance to protect the provider of a service, such as a lessor, against damage or nonpayment by the tenant (lessee) during the term of the agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_IncreaseDecreaseInRentsReceivedInAdvanceAndSecurityDeposits_lbl" xml:lang="en-US">Increase Decrease In Rents Received In Advance And Security Deposits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_IncreaseDecreaseInRentsReceivedInAdvanceAndSecurityDeposits_lbl" xml:lang="en-US">(Decrease) increase in rents received in advance and security deposits</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInInterestPayableNet" xlink:to="us-gaap_IncreaseDecreaseInInterestPayableNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet_lbl" xml:lang="en-US">Decrease in accrued interest payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInInterestPayableNet_lbl" xml:lang="en-US">Increase in accrued interest payable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US">CASH FLOWS FROM INVESTING ACTIVITIES</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:to="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_lbl" xml:lang="en-US">Rental property acquisitions and related intangibles</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireAndDevelopRealEstate" xlink:label="us-gaap_PaymentsToAcquireAndDevelopRealEstate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireAndDevelopRealEstate" xlink:to="us-gaap_PaymentsToAcquireAndDevelopRealEstate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireAndDevelopRealEstate_lbl" xml:lang="en-US">Additions to rental property and related intangibles</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireAndDevelopRealEstate_lbl" xml:lang="en-US">Rental property additions and improvements</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToDevelopRealEstateAssets" xlink:label="us-gaap_PaymentsToDevelopRealEstateAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToDevelopRealEstateAssets" xlink:to="us-gaap_PaymentsToDevelopRealEstateAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToDevelopRealEstateAssets_lbl" xml:lang="en-US">Payments to Develop Real Estate Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToDevelopRealEstateAssets_lbl" xml:lang="en-US">Development of rental property</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromSaleOfBuildings" xlink:label="us-gaap_ProceedsFromSaleOfBuildings" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfBuildings" xlink:to="us-gaap_ProceedsFromSaleOfBuildings_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfBuildings_lbl" xml:lang="en-US">Net Sales Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromSaleOfBuildings_lbl" xml:lang="en-US">Proceeds from the sale of rental property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromSaleOfBuildings_lbl" xml:lang="en-US">Proceeds from the sale of property</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireLoansReceivable" xlink:label="us-gaap_PaymentsToAcquireLoansReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireLoansReceivable" xlink:to="us-gaap_PaymentsToAcquireLoansReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireLoansReceivable_lbl" xml:lang="en-US">Payments to Acquire Loans Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireLoansReceivable_lbl" xml:lang="en-US">Issuance of notes and mortgage receivable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromCollectionOfLoansReceivable" xlink:label="us-gaap_ProceedsFromCollectionOfLoansReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromCollectionOfLoansReceivable" xlink:to="us-gaap_ProceedsFromCollectionOfLoansReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromCollectionOfLoansReceivable_lbl" xml:lang="en-US">Proceeds from Collection of Loans Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromCollectionOfLoansReceivable_lbl" xml:lang="en-US">Repayment of notes receivable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireInterestInJointVenture" xlink:label="us-gaap_PaymentsToAcquireInterestInJointVenture" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireInterestInJointVenture" xlink:to="us-gaap_PaymentsToAcquireInterestInJointVenture_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireInterestInJointVenture_lbl" xml:lang="en-US">Investment in unconsolidated joint ventures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsToAcquireInterestInJointVenture_lbl" xml:lang="en-US">Investment in unconsolidated joint ventures</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DistributionsInExcessOfCumulativeEarningsFromJvs" xlink:label="cli_DistributionsInExcessOfCumulativeEarningsFromJvs" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DistributionsInExcessOfCumulativeEarningsFromJvs" xlink:to="cli_DistributionsInExcessOfCumulativeEarningsFromJvs_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DistributionsInExcessOfCumulativeEarningsFromJvs_lbl" xml:lang="en-US">This item represents the amount of distributions in excess of net earnings, which represents a return of investment, received from unconsolidated joint ventures and subsidiaries; these investments are accounted for under the equity method of accounting.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DistributionsInExcessOfCumulativeEarningsFromJvs_lbl" xml:lang="en-US">Distributions In Excess Of Cumulative Earnings From Jvs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_DistributionsInExcessOfCumulativeEarningsFromJvs_lbl" xml:lang="en-US">Distributions in excess of cumulative earnings from unconsolidated joint ventures</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncreaseDecreaseInRestrictedCash" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInRestrictedCash" xlink:to="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" xml:lang="en-US">Increase Decrease In Restricted Cash</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInRestrictedCash_lbl" xml:lang="en-US">(Increase) decrease in restricted cash</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US">Net cash used in investing activities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US">Net cash used in investing activities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US">CASH FLOW FROM FINANCING ACTIVITIES</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromUnsecuredLinesOfCredit" xlink:label="us-gaap_ProceedsFromUnsecuredLinesOfCredit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromUnsecuredLinesOfCredit" xlink:to="us-gaap_ProceedsFromUnsecuredLinesOfCredit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromUnsecuredLinesOfCredit_lbl" xml:lang="en-US">Borrowings from revolving credit facility</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit" xlink:label="us-gaap_RepaymentsOfLinesOfCredit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfLinesOfCredit" xlink:to="us-gaap_RepaymentsOfLinesOfCredit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfLinesOfCredit_lbl" xml:lang="en-US">Repayment of revolving credit facility and money market loans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfLinesOfCredit_lbl" xml:lang="en-US">Repayment of revolving credit facility</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfUnsecuredDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt" xlink:to="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_lbl" xml:lang="en-US">Proceeds from the sale of senior unsecured notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_lbl" xml:lang="en-US">Proceeds from senior unsecured notes</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepaymentsOfUnsecuredDebt" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfUnsecuredDebt" xlink:to="us-gaap_RepaymentsOfUnsecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt_lbl" xml:lang="en-US">Repayments of senior unsecured notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt_lbl" xml:lang="en-US">Repayment of senior unsecured notes</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSecuredDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfSecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfSecuredDebt" xlink:to="us-gaap_ProceedsFromIssuanceOfSecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfSecuredDebt_lbl" xml:lang="en-US">Proceeds from Issuance of Secured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfSecuredDebt_lbl" xml:lang="en-US">Proceeds from mortgages and loans payable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Proceeds from Issuance of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US">Proceeds from offering of common stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock" xlink:label="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock" xlink:to="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_lbl" xml:lang="en-US">Payments for Repurchase of Redeemable Preferred Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_lbl" xml:lang="en-US">Redemption of preferred stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt" xlink:label="us-gaap_RepaymentsOfSecuredDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfSecuredDebt" xlink:to="us-gaap_RepaymentsOfSecuredDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RepaymentsOfSecuredDebt_lbl" xml:lang="en-US">Repayment of mortgages, loans payable and other obligations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RepaymentsOfSecuredDebt_lbl" xml:lang="en-US">Repayment of mortgages, loans payable and other obligations</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessAcquisitionContingentConsiderationCashPaid" xlink:label="cli_BusinessAcquisitionContingentConsiderationCashPaid" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessAcquisitionContingentConsiderationCashPaid" xlink:to="cli_BusinessAcquisitionContingentConsiderationCashPaid_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessAcquisitionContingentConsiderationCashPaid_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, Cash Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessAcquisitionContingentConsiderationCashPaid_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, Cash Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_BusinessAcquisitionContingentConsiderationCashPaid_lbl" xml:lang="en-US">Payment of contingent consideration</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessAcquisitionContingentConsiderationCashPaid_lbl" xml:lang="en-US">Earn out paid</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="us-gaap_PaymentsOfFinancingCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfFinancingCosts" xlink:to="us-gaap_PaymentsOfFinancingCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US">Payment of financing costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfFinancingCosts_lbl" xml:lang="en-US">Payment of financing costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US">Payments for Repurchase of Common Stock</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US">Repurchase of common stock</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock" />
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:to="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US">Related Party Transactions Disclosure [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US">Related Party Transactions</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xml:lang="en-US">Subsequent Events [Abstract]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US">Subsequent Events [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US">Subsequent Events</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xml:lang="en-US">Quarterly Financial Information [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xml:lang="en-US">Condensed Quarterly Financial Information</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationDisclosureAbstract" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationDisclosureAbstract_lbl" />
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationDisclosureTextBlock" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationDisclosureTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xml:lang="en-US">Property, Plant and Equipment, Policy [Text Block]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateHeldForDevelopmentAndSalePolicy_lbl" xml:lang="en-US">Rental Property Held For Sale And Discontinued Operations</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xml:lang="en-US">Earnings Per Share</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DividendsAndDistributionsPayablePolicyTextBlock_lbl" xml:lang="en-US">Dividends And Distributions Payable Policy Text Block</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_DividendsAndDistributionsPayablePolicyTextBlock_lbl" xml:lang="en-US">Dividends And Distributions Payable</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_IssuanceCostsPolicyTextBlock_lbl" xml:lang="en-US">Issuance Costs Policy Text Block</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xml:lang="en-US">Stock Compensation</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OtherComprehensiveIncomePolicyTextBlock" xlink:label="cli_OtherComprehensiveIncomePolicyTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OtherComprehensiveIncomePolicyTextBlock" xlink:to="cli_OtherComprehensiveIncomePolicyTextBlock_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OtherComprehensiveIncomePolicyTextBlock_lbl" xml:lang="en-US">Other Comprehensive Income Policy Text Block</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_OtherComprehensiveIncomePolicyTextBlock_lbl" xml:lang="en-US">Other Comprehensive Income</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xml:lang="en-US">Fair Value Measurement, Policy [Policy Text Block]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DiscontinuedOperationsPolicyTextBlock" xlink:label="us-gaap_DiscontinuedOperationsPolicyTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DiscontinuedOperationsPolicyTextBlock_lbl" xml:lang="en-US">Discontinued Operations, Policy [Policy Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DiscontinuedOperationsPolicyTextBlock_lbl" xml:lang="en-US">Discontinued Operations</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfEstimatedUsefulLivesOfAssetsTextBlock" xlink:label="cli_ScheduleOfEstimatedUsefulLivesOfAssetsTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ScheduleOfEstimatedUsefulLivesOfAssetsTextBlock" xlink:to="cli_ScheduleOfEstimatedUsefulLivesOfAssetsTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfEstimatedUsefulLivesOfAssetsTextBlock_lbl" xml:lang="en-US">Schedule of Estimated Useful Lives of Assets [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfEstimatedUsefulLivesOfAssetsTextBlock_lbl" xml:lang="en-US">Schedule of Estimated Useful Lives of Assets [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfEstimatedUsefulLivesOfAssetsTextBlock_lbl" xml:lang="en-US">Estimated Useful Lives Of Assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfRealEstatePropertiesTable" xlink:label="us-gaap_ScheduleOfRealEstatePropertiesTable" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRealEstatePropertiesTable_lbl" xml:lang="en-US">Schedule of Real Estate Properties [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstatePropertiesLineItems" xlink:label="us-gaap_RealEstatePropertiesLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstatePropertiesLineItems" xlink:to="us-gaap_RealEstatePropertiesLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstatePropertiesLineItems_lbl" xml:lang="en-US">Real Estate Properties [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_lbl" xml:lang="en-US">Schedule of Business Acquisitions, by Acquisition [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock_lbl" xml:lang="en-US">Schedule Of Properties Acquired</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock" xlink:to="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" xml:lang="en-US">Schedule of Purchase Price Allocation [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" xml:lang="en-US">Schedule Of Purchase Price Allocation</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfConsolidationAmountsTableTextBlock" xlink:label="cli_ScheduleOfConsolidationAmountsTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ScheduleOfConsolidationAmountsTableTextBlock" xlink:to="cli_ScheduleOfConsolidationAmountsTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfConsolidationAmountsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Consolidation Amounts [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfConsolidationAmountsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Consolidation Amounts [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfConsolidationAmountsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Net Assets Recorded Upon Consolidation</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfPropertiesWhichCommencedInitialOperationsTableTextBlock" xlink:label="cli_ScheduleOfPropertiesWhichCommencedInitialOperationsTableTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfPropertiesWhichCommencedInitialOperationsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Properties Which Commenced Initial Operations [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfPropertiesWhichCommencedInitialOperationsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Properties Which Commenced Initial Operations [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfPropertiesWhichCommencedInitialOperationsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Properties Which Commenced Initial Operations</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlock_lbl" xml:lang="en-US">Property, Plant and Equipment, Schedule of Significant Acquisitions and Disposals [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentScheduleOfSignificantAcquisitionsAndDisposalsTextBlock_lbl" xml:lang="en-US">Schedule Of Property Sales</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationBalanceSheetTableTextBlock" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationBalanceSheetTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationBalanceSheetTableTextBlock" xlink:to="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationBalanceSheetTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationBalanceSheetTableTextBlock_lbl" xml:lang="en-US">Schedule of Equity Method Investment, Summarized Financial Information, Balance Sheet [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationBalanceSheetTableTextBlock_lbl" xml:lang="en-US">Schedule of Equity Method Investment, Summarized Financial Information, Balance Sheet [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationBalanceSheetTableTextBlock_lbl" xml:lang="en-US">Summary Of Financial Position Of Unconsolidated Joint Ventures</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfEquityMethodInvestmentsTableTextBlock" xlink:label="cli_ScheduleOfEquityMethodInvestmentsTableTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Equity Method Investments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Equity Method Investments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US">Summary Of Company's Investment In Unconsolidated Joint Ventures</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationIncomeStatementTableTextBlock" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationIncomeStatementTableTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationIncomeStatementTableTextBlock_lbl" xml:lang="en-US">Schedule of Equity Method Investment, Summarized Financial Information, Income Statement [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationIncomeStatementTableTextBlock_lbl" xml:lang="en-US">Schedule of Equity Method Investment, Summarized Financial Information, Income Statement [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfEquityMethodInvestmentSummarizedFinancialInformationIncomeStatementTableTextBlock_lbl" xml:lang="en-US">Summary Of Results Of Operations Of Unconsolidated Joint Ventures</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfEquityInEarningsLossEquityMethodInvestmentsTableTextBlock" xlink:label="cli_ScheduleOfEquityInEarningsLossEquityMethodInvestmentsTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ScheduleOfEquityInEarningsLossEquityMethodInvestmentsTableTextBlock" xlink:to="cli_ScheduleOfEquityInEarningsLossEquityMethodInvestmentsTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfEquityInEarningsLossEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Equity In Earnings (Loss) Equity Method Investments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfEquityInEarningsLossEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Equity In Earnings (Loss) Equity Method Investments [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfEquityInEarningsLossEquityMethodInvestmentsTableTextBlock_lbl" xml:lang="en-US">Summary Of Company's Equity In Earnings (Loss) Of Unconsolidated Joint Ventures</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DeferredChargesGoodwillAndOtherAssetsTable" xlink:label="cli_DeferredChargesGoodwillAndOtherAssetsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DeferredChargesGoodwillAndOtherAssetsTable" xlink:to="cli_DeferredChargesGoodwillAndOtherAssetsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DeferredChargesGoodwillAndOtherAssetsTable_lbl" xml:lang="en-US">Deferred Charges, Goodwill And Other Assets [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DeferredChargesGoodwillAndOtherAssetsTable_lbl" xml:lang="en-US">Deferred Charges, Goodwill And Other Assets [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DeferredChargesGoodwillAndOtherAssetsLineItems" xlink:label="cli_DeferredChargesGoodwillAndOtherAssetsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DeferredChargesGoodwillAndOtherAssetsLineItems" xlink:to="cli_DeferredChargesGoodwillAndOtherAssetsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DeferredChargesGoodwillAndOtherAssetsLineItems_lbl" xml:lang="en-US">Deferred Charges, Goodwill And Other Assets [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DeferredChargesGoodwillAndOtherAssetsLineItems_lbl" xml:lang="en-US">Deferred Charges, Goodwill And Other Assets [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfOtherAssetsTableTextBlock" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock_lbl" xml:lang="en-US">Schedule of Other Assets [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock_lbl" xml:lang="en-US">Schedule Of Deferred Charges, Goodwill And Other Assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" />
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    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfSeniorUnsecuredNotesTableTextBlock" xlink:label="cli_ScheduleOfSeniorUnsecuredNotesTableTextBlock" />
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    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfUnsecuredCreditRatingOperatingPartnershipsTableTextBlock" xlink:label="cli_ScheduleOfUnsecuredCreditRatingOperatingPartnershipsTableTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfUnsecuredCreditRatingOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US">Schedule of Unsecured Credit Rating, Operating Partnerships [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfUnsecuredCreditRatingOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US">Change In The Operating Partnership's Unsecured Debt Ratings</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfSecuredDebtTableTextBlock" xlink:label="cli_ScheduleOfSecuredDebtTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ScheduleOfSecuredDebtTableTextBlock" xlink:to="cli_ScheduleOfSecuredDebtTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfSecuredDebtTableTextBlock_lbl" xml:lang="en-US">Schedule of Secured Debt [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfSecuredDebtTableTextBlock_lbl" xml:lang="en-US">Schedule of Secured Debt [Table Text Block]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xml:lang="en-US">Schedule of Maturities of Long-term Debt [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xml:lang="en-US">Schedule Of Principal Payments And Related Weighted Average Interest Rates Of Long Term Debt</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:to="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl" xml:lang="en-US">Schedule Of Future Minimum Rental Payments For Operating Leases [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock_lbl" xml:lang="en-US">Future Minimum Rental Payments Of Ground Leases</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ScheduleOfFutureMinimumRentalsUnderNonCancelableOperatingLeaseTextBlock" xlink:label="cli_ScheduleOfFutureMinimumRentalsUnderNonCancelableOperatingLeaseTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ScheduleOfFutureMinimumRentalsUnderNonCancelableOperatingLeaseTextBlock" xlink:to="cli_ScheduleOfFutureMinimumRentalsUnderNonCancelableOperatingLeaseTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ScheduleOfFutureMinimumRentalsUnderNonCancelableOperatingLeaseTextBlock_lbl" xml:lang="en-US">Schedule Of Future Minimum Rentals Under Non-cancelable Operating Lease [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ScheduleOfFutureMinimumRentalsUnderNonCancelableOperatingLeaseTextBlock_lbl" xml:lang="en-US">Schedule Of Future Minimum Rentals Under Non-cancelable Operating Lease [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ScheduleOfFutureMinimumRentalsUnderNonCancelableOperatingLeaseTextBlock_lbl" xml:lang="en-US">Future Minimum Rentals To Be Received Under Non-Cancelable Operating Leases</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule Of Stock Option Plans</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xml:lang="en-US">Schedule Of Restricted Stock Awards</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xml:lang="en-US">Schedule Of Basic And Diluted Earnings Per Share</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfOtherOwnershipInterestsTextBlock" xlink:label="us-gaap_ScheduleOfOtherOwnershipInterestsTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfOtherOwnershipInterestsTextBlock" xlink:to="us-gaap_ScheduleOfOtherOwnershipInterestsTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfOtherOwnershipInterestsTextBlock_lbl" xml:lang="en-US">Schedule of Other Ownership Interests [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfOtherOwnershipInterestsTextBlock_lbl" xml:lang="en-US">Changes In Noncontrolling Interests Of Subsidiaries</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xml:lang="en-US">Schedule Of Segment Reporting Information, By Segment</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:to="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xml:lang="en-US">Schedule of Quarterly Financial Information [Table Text Block]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xml:lang="en-US">Summary Of Condensed Quarterly Financial Information</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:label="us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_lbl" xml:lang="en-US">Real Estate, Type of Property [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:label="us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" xml:lang="en-US">Mortgage Loans On Real Estate Name Property Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" xml:lang="en-US">Real Estate [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OfficeAndOfficeFlexBuildingsMember" xlink:label="cli_OfficeAndOfficeFlexBuildingsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OfficeAndOfficeFlexBuildingsMember" xlink:to="cli_OfficeAndOfficeFlexBuildingsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OfficeAndOfficeFlexBuildingsMember_lbl" xml:lang="en-US">Office And Office Flex Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OfficeAndOfficeFlexBuildingsMember_lbl" xml:lang="en-US">Office And Office Flex Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OfficeAndOfficeFlexBuildingsMember_lbl" xml:lang="en-US">Office And Office/Flex Buildings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureOfficeBuildingsMember" xlink:label="cli_UnconsolidatedJointVentureOfficeBuildingsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureOfficeBuildingsMember" xlink:to="cli_UnconsolidatedJointVentureOfficeBuildingsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureOfficeBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Office Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureOfficeBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Office Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureOfficeBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Office Buildings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_IndustrialAndWarehouseFacilitiesMember" xlink:label="cli_IndustrialAndWarehouseFacilitiesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_IndustrialAndWarehouseFacilitiesMember" xlink:to="cli_IndustrialAndWarehouseFacilitiesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_IndustrialAndWarehouseFacilitiesMember_lbl" xml:lang="en-US">Industrial and Warehouse Facilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_IndustrialAndWarehouseFacilitiesMember_lbl" xml:lang="en-US">Industrial And Warehouse Facilities [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_IndustrialAndWarehouseFacilitiesMember_lbl" xml:lang="en-US">Industrial/Warehouse Facilities [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MultipleFamilyPropertiesMember" xlink:label="cli_MultipleFamilyPropertiesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MultipleFamilyPropertiesMember" xlink:to="cli_MultipleFamilyPropertiesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MultipleFamilyPropertiesMember_lbl" xml:lang="en-US">Multi-Family Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MultipleFamilyPropertiesMember_lbl" xml:lang="en-US">Multiple Family Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MultipleFamilyPropertiesMember_lbl" xml:lang="en-US">Multi-Family Properties [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureMultipleFamilyPropertiesMember" xlink:label="cli_UnconsolidatedJointVentureMultipleFamilyPropertiesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureMultipleFamilyPropertiesMember" xlink:to="cli_UnconsolidatedJointVentureMultipleFamilyPropertiesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureMultipleFamilyPropertiesMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Multiple Family Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureMultipleFamilyPropertiesMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Multiple Family Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureMultipleFamilyPropertiesMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Multi-Family Properties [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ParkingRetailMember" xlink:label="cli_ParkingRetailMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ParkingRetailMember" xlink:to="cli_ParkingRetailMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ParkingRetailMember_lbl" xml:lang="en-US">Parking/Retail [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ParkingRetailMember_lbl" xml:lang="en-US">Parking Retail [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ParkingRetailMember_lbl" xml:lang="en-US">Parking/Retail [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureParkingRetailBuildingsMember" xlink:label="cli_UnconsolidatedJointVentureParkingRetailBuildingsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureParkingRetailBuildingsMember" xlink:to="cli_UnconsolidatedJointVentureParkingRetailBuildingsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureParkingRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Parking/Retail Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureParkingRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Parking Retail Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureParkingRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Parking/Retail Buildings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureHotelMember" xlink:label="cli_UnconsolidatedJointVentureHotelMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureHotelMember" xlink:to="cli_UnconsolidatedJointVentureHotelMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureHotelMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Hotel [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureHotelMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Hotel [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureHotelMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Hotel [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LandMember" xlink:label="us-gaap_LandMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LandMember" xlink:to="us-gaap_LandMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LandMember_lbl" xml:lang="en-US">Land [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LandMember_lbl" xml:lang="en-US">Land [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyOwnedAndInvestmentInterest" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyOwnedAndInvestmentInterest" xlink:to="cli_RealEstatePropertyOwnedAndInvestmentInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterest_lbl" xml:lang="en-US">Real Estate Property Owned and Investment Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterest_lbl" xml:lang="en-US">Real Estate Property Owned and Investment Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterest_lbl" xml:lang="en-US">Number of properties owned or investment interests</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyOwnedAndInvestmentInterestArea" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterestArea" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyOwnedAndInvestmentInterestArea" xlink:to="cli_RealEstatePropertyOwnedAndInvestmentInterestArea_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterestArea_lbl" xml:lang="en-US">Real Estate Property Owned and Investment Interest, Area</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterestArea_lbl" xml:lang="en-US">Real Estate Property Owned and Investment Interest, Area</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstatePropertyOwnedAndInvestmentInterestArea_lbl" xml:lang="en-US">Aggregate square feet of the property owned or investment interest</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfTenants" xlink:label="cli_NumberOfTenants" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfTenants" xlink:to="cli_NumberOfTenants_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfTenants_lbl" xml:lang="en-US">Number Of Tenants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfTenants_lbl" xml:lang="en-US">Number Of Tenants</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfTenants_lbl" xml:lang="en-US">Number of tenants</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfUnitsInRealEstateProperty" xlink:label="us-gaap_NumberOfUnitsInRealEstateProperty" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfUnitsInRealEstateProperty" xlink:to="us-gaap_NumberOfUnitsInRealEstateProperty_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfUnitsInRealEstateProperty_lbl" xml:lang="en-US">Number of units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NumberOfUnitsInRealEstateProperty_lbl" xml:lang="en-US">Number of apartments</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyOwnedOrInvestmentInterestNumberOfLocation" xlink:label="cli_RealEstatePropertyOwnedOrInvestmentInterestNumberOfLocation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyOwnedOrInvestmentInterestNumberOfLocation" xlink:to="cli_RealEstatePropertyOwnedOrInvestmentInterestNumberOfLocation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyOwnedOrInvestmentInterestNumberOfLocation_lbl" xml:lang="en-US">Real Estate Property Owned or Investment Interest, Number of Location</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyOwnedOrInvestmentInterestNumberOfLocation_lbl" xml:lang="en-US">Real Estate Property Owned or Investment Interest, Number of Location</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_RealEstatePropertyOwnedOrInvestmentInterestNumberOfLocation_lbl" xml:lang="en-US">Number of states where properties are located</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ConsolidatedJointVenturesRealEstateAssets" xlink:label="cli_ConsolidatedJointVenturesRealEstateAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ConsolidatedJointVenturesRealEstateAssets" xlink:to="cli_ConsolidatedJointVenturesRealEstateAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ConsolidatedJointVenturesRealEstateAssets_lbl" xml:lang="en-US">Consolidated Joint Ventures Real Estate Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ConsolidatedJointVenturesRealEstateAssets_lbl" xml:lang="en-US">Consolidated Joint Ventures Real Estate Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ConsolidatedJointVenturesRealEstateAssets_lbl" xml:lang="en-US">Consolidated joint ventures, total real estate assets</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ConsolidatedJointVenturesMortgages" xlink:label="cli_ConsolidatedJointVenturesMortgages" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ConsolidatedJointVenturesMortgages" xlink:to="cli_ConsolidatedJointVenturesMortgages_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ConsolidatedJointVenturesMortgages_lbl" xml:lang="en-US">Consolidated Joint Ventures Mortgages</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ConsolidatedJointVenturesMortgages_lbl" xml:lang="en-US">Consolidated Joint Ventures Mortgages</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ConsolidatedJointVenturesMortgages_lbl" xml:lang="en-US">Consolidated joint ventures, mortgages</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ConsolidatedJointVenturesOtherLiabilites" xlink:label="cli_ConsolidatedJointVenturesOtherLiabilites" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ConsolidatedJointVenturesOtherLiabilites" xlink:to="cli_ConsolidatedJointVenturesOtherLiabilites_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ConsolidatedJointVenturesOtherLiabilites_lbl" xml:lang="en-US">Consolidated Joint Ventures Other Liabilites</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ConsolidatedJointVenturesOtherLiabilites_lbl" xml:lang="en-US">Consolidated Joint Ventures Other Liabilites</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ConsolidatedJointVenturesOtherLiabilites_lbl" xml:lang="en-US">Consolidated joint ventures, other liabilities</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CapitalizedDevelopmentConstructionSalariesAndOtherRelatedExpenses" xlink:label="cli_CapitalizedDevelopmentConstructionSalariesAndOtherRelatedExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CapitalizedDevelopmentConstructionSalariesAndOtherRelatedExpenses" xlink:to="cli_CapitalizedDevelopmentConstructionSalariesAndOtherRelatedExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CapitalizedDevelopmentConstructionSalariesAndOtherRelatedExpenses_lbl" xml:lang="en-US">Capitalized Development, Construction Salaries And Other Related Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CapitalizedDevelopmentConstructionSalariesAndOtherRelatedExpenses_lbl" xml:lang="en-US">Capitalized Development, Construction Salaries And Other Related Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CapitalizedDevelopmentConstructionSalariesAndOtherRelatedExpenses_lbl" xml:lang="en-US">Capitalized development and construction salaries and other related costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConstructionInProgressGross" xlink:label="us-gaap_ConstructionInProgressGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConstructionInProgressGross" xlink:to="us-gaap_ConstructionInProgressGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConstructionInProgressGross_lbl" xml:lang="en-US">Construction in Progress, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConstructionInProgressGross_lbl" xml:lang="en-US">Construction, tenant improvement, and development in-progress</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfPropertiesPlacedInService" xlink:label="cli_NumberOfPropertiesPlacedInService" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfPropertiesPlacedInService" xlink:to="cli_NumberOfPropertiesPlacedInService_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfPropertiesPlacedInService_lbl" xml:lang="en-US">Number Of Properties Placed In Service</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfPropertiesPlacedInService_lbl" xml:lang="en-US">Number Of Properties Placed In Service</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfPropertiesPlacedInService_lbl" xml:lang="en-US">Number of properties placed into service</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MaximumPeriodAfterCessationOfMajorConstructionActivityThatProjectsAreConsideredComplete" xlink:label="cli_MaximumPeriodAfterCessationOfMajorConstructionActivityThatProjectsAreConsideredComplete" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MaximumPeriodAfterCessationOfMajorConstructionActivityThatProjectsAreConsideredComplete" xlink:to="cli_MaximumPeriodAfterCessationOfMajorConstructionActivityThatProjectsAreConsideredComplete_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MaximumPeriodAfterCessationOfMajorConstructionActivityThatProjectsAreConsideredComplete_lbl" xml:lang="en-US">Maximum Period After Cessation Of Major Construction Activity That Projects Are Considered Complete</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MaximumPeriodAfterCessationOfMajorConstructionActivityThatProjectsAreConsideredComplete_lbl" xml:lang="en-US">Maximum Period After Cessation Of Major Construction Activity That Projects Are Considered Complete</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MaximumPeriodAfterCessationOfMajorConstructionActivityThatProjectsAreConsideredComplete_lbl" xml:lang="en-US">Maximum period after cessation of major construction activity that projects are considered complete</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfInvestmentValueForDiscontinuationOfEquityMethodAccounting" xlink:label="cli_ThresholdOfInvestmentValueForDiscontinuationOfEquityMethodAccounting" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfInvestmentValueForDiscontinuationOfEquityMethodAccounting" xlink:to="cli_ThresholdOfInvestmentValueForDiscontinuationOfEquityMethodAccounting_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfInvestmentValueForDiscontinuationOfEquityMethodAccounting_lbl" xml:lang="en-US">Threshold Of Investment Value For Discontinuation Of Equity Method Accounting</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfInvestmentValueForDiscontinuationOfEquityMethodAccounting_lbl" xml:lang="en-US">Threshold Of Investment Value For Discontinuation Of Equity Method Accounting</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfInvestmentValueForDiscontinuationOfEquityMethodAccounting_lbl" xml:lang="en-US">Threshold of investment value for discontinuation of equity method accounting</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="us-gaap_AmortizationOfFinancingCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfFinancingCosts" xlink:to="us-gaap_AmortizationOfFinancingCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US">Amortization of Financing Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xml:lang="en-US">Amortization of deferred financing costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AmortizationOfDeferredLeasingFees" xlink:label="us-gaap_AmortizationOfDeferredLeasingFees" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfDeferredLeasingFees" xlink:to="us-gaap_AmortizationOfDeferredLeasingFees_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfDeferredLeasingFees_lbl" xml:lang="en-US">Amortization of Deferred Leasing Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfDeferredLeasingFees_lbl" xml:lang="en-US">Deferred leasing costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US">Deferred tax asset</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xml:lang="en-US">Valuation allowance</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MaterialAdjustmentAmount" xlink:label="cli_MaterialAdjustmentAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MaterialAdjustmentAmount" xlink:to="cli_MaterialAdjustmentAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MaterialAdjustmentAmount_lbl" xml:lang="en-US">Material Adjustment Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MaterialAdjustmentAmount_lbl" xml:lang="en-US">Material Adjustment Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MaterialAdjustmentAmount_lbl" xml:lang="en-US">Income taxes, material adjustment amount</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommonUnitsOutstanding" xlink:label="cli_CommonUnitsOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommonUnitsOutstanding" xlink:to="cli_CommonUnitsOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommonUnitsOutstanding_lbl" xml:lang="en-US">The number of common units outstanding.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommonUnitsOutstanding_lbl" xml:lang="en-US">Common Units Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="cli_CommonUnitsOutstanding_lbl" xml:lang="en-US">Balance, Ending</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="cli_CommonUnitsOutstanding_lbl" xml:lang="en-US">Balance, Beginning</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CommonUnitsOutstanding_lbl" xml:lang="en-US">Common units outstanding</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:to="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xml:lang="en-US">Dividends Payable, Date of Record</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xml:lang="en-US">Distributions payable, record date</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommonStockDividendsAndCommonUnitDistributionsPerShare" xlink:label="cli_CommonStockDividendsAndCommonUnitDistributionsPerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommonStockDividendsAndCommonUnitDistributionsPerShare" xlink:to="cli_CommonStockDividendsAndCommonUnitDistributionsPerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommonStockDividendsAndCommonUnitDistributionsPerShare_lbl" xml:lang="en-US">Common Stock Dividends And Common Unit Distributions Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommonStockDividendsAndCommonUnitDistributionsPerShare_lbl" xml:lang="en-US">Common Stock Dividends And Common Unit Distributions Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CommonStockDividendsAndCommonUnitDistributionsPerShare_lbl" xml:lang="en-US">Common stock dividends and common unit distributions per share</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xml:lang="en-US">Common Stock, Dividends, Per Share, Cash Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xml:lang="en-US">Dividends paid per common share</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingOrdinaryIncome_lbl" xml:lang="en-US">Common Stock Dividends Per Share Paid Percent Representing Ordinary Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingOrdinaryIncome_lbl" xml:lang="en-US">Common Stock Dividends Per Share Paid Percent Representing Ordinary Income</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingOrdinaryIncome_lbl" xml:lang="en-US">Dividends paid, percent representing ordinary income</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommonStockDividendsPerSharePaidPercentRepresentingReturnOfCapitalToStockholders" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingReturnOfCapitalToStockholders" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommonStockDividendsPerSharePaidPercentRepresentingReturnOfCapitalToStockholders" xlink:to="cli_CommonStockDividendsPerSharePaidPercentRepresentingReturnOfCapitalToStockholders_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingReturnOfCapitalToStockholders_lbl" xml:lang="en-US">Common Stock Dividends Per Share Paid Percent Representing Return Of Capital To Stockholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingReturnOfCapitalToStockholders_lbl" xml:lang="en-US">Common Stock Dividends Per Share Paid Percent Representing Return Of Capital To Stockholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingReturnOfCapitalToStockholders_lbl" xml:lang="en-US">Dividends paid, percent representing return of capital to shareholders</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommonStockDividendsPerSharePaidPercentRepresentingCapitalGain" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingCapitalGain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommonStockDividendsPerSharePaidPercentRepresentingCapitalGain" xlink:to="cli_CommonStockDividendsPerSharePaidPercentRepresentingCapitalGain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingCapitalGain_lbl" xml:lang="en-US">Common Stock Dividends Per Share Paid, Percent Representing Capital Gain</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingCapitalGain_lbl" xml:lang="en-US">Common Stock Dividends Per Share Paid, Percent Representing Capital Gain</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CommonStockDividendsPerSharePaidPercentRepresentingCapitalGain_lbl" xml:lang="en-US">Dividends paid, percent representing capital gain</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:to="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xml:lang="en-US">Dividends Payable, Date to be Paid, Day, Month and Year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xml:lang="en-US">Common stock dividends and common unit distributions payable, date</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DifferenceBetweenOtherComprehensiveIncomeAndNetIncomeLoss" xlink:label="cli_DifferenceBetweenOtherComprehensiveIncomeAndNetIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DifferenceBetweenOtherComprehensiveIncomeAndNetIncomeLoss" xlink:to="cli_DifferenceBetweenOtherComprehensiveIncomeAndNetIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DifferenceBetweenOtherComprehensiveIncomeAndNetIncomeLoss_lbl" xml:lang="en-US">Difference Between Other Comprehensive Income And Net Income Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DifferenceBetweenOtherComprehensiveIncomeAndNetIncomeLoss_lbl" xml:lang="en-US">Difference Between Other Comprehensive Income And Net Income Loss</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DifferenceBetweenOtherComprehensiveIncomeAndNetIncomeLoss_lbl" xml:lang="en-US">Difference between other comprehensive income and net income</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Net of Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xml:lang="en-US">Accumulated other comprehensive income</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xml:lang="en-US">Schedule of Property, Plant and Equipment [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeAxis" xlink:label="us-gaap_RangeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeAxis_lbl" xml:lang="en-US">Range [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RangeMember" xlink:label="us-gaap_RangeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_RangeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US">Range [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RangeMember_lbl" xml:lang="en-US">Range [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinimumMember" xlink:label="us-gaap_MinimumMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinimumMember" xlink:to="us-gaap_MinimumMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US">Minimum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinimumMember_lbl" xml:lang="en-US">Minimum [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaximumMember" xlink:label="us-gaap_MaximumMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaximumMember" xlink:to="us-gaap_MaximumMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US">Maximum [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MaximumMember_lbl" xml:lang="en-US">Maximum [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xml:lang="en-US">Property, Plant and Equipment by Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xml:lang="en-US">Property Plant And Equipment Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xml:lang="en-US">Property, Plant and Equipment, Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingAndBuildingImprovementsMember" xlink:to="us-gaap_BuildingAndBuildingImprovementsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xml:lang="en-US">Building And Building Improvements [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xml:lang="en-US">Buildings And Improvements [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="us-gaap_FurnitureAndFixturesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FurnitureAndFixturesMember" xlink:to="us-gaap_FurnitureAndFixturesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FurnitureAndFixturesMember_lbl" xml:lang="en-US">Furniture And Fixtures [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FurnitureAndFixturesMember_lbl" xml:lang="en-US">Furniture, Fixtures And Equipment [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US">Property, Plant and Equipment [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US">Property, Plant and Equipment, Useful Life</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xml:lang="en-US">Estimated useful lives of assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContingentConsiderationByTypeAxis" xlink:label="us-gaap_ContingentConsiderationByTypeAxis" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ContingentConsiderationByTypeAxis_lbl" xml:lang="en-US">Contingent Consideration by Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ContingentConsiderationTypeDomain" xlink:label="us-gaap_ContingentConsiderationTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContingentConsiderationTypeDomain" xlink:to="us-gaap_ContingentConsiderationTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ContingentConsiderationTypeDomain_lbl" xml:lang="en-US">Contingent Consideration Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ContingentConsiderationTypeDomain_lbl" xml:lang="en-US">Contingent Consideration Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoselandAssetsMember" xlink:label="cli_RoselandAssetsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoselandAssetsMember" xlink:to="cli_RoselandAssetsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoselandAssetsMember_lbl" xml:lang="en-US">Roseland Assets [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoselandAssetsMember_lbl" xml:lang="en-US">Roseland Assets [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoselandAssetsMember_lbl" xml:lang="en-US">Roseland Assets [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CompletionOfCertainDevelopmentsMember" xlink:label="cli_CompletionOfCertainDevelopmentsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CompletionOfCertainDevelopmentsMember" xlink:to="cli_CompletionOfCertainDevelopmentsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CompletionOfCertainDevelopmentsMember_lbl" xml:lang="en-US">Completion Of Certain Developments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CompletionOfCertainDevelopmentsMember_lbl" xml:lang="en-US">Completion Of Certain Developments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CompletionOfCertainDevelopmentsMember_lbl" xml:lang="en-US">Completion Of Certain Developments [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_StartOfConstructionOnCertainDevelopmentsMember" xlink:label="cli_StartOfConstructionOnCertainDevelopmentsMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_StartOfConstructionOnCertainDevelopmentsMember_lbl" xml:lang="en-US">Start Of Construction On Certain Developments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_StartOfConstructionOnCertainDevelopmentsMember_lbl" xml:lang="en-US">Start Of Construction On Certain Developments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_StartOfConstructionOnCertainDevelopmentsMember_lbl" xml:lang="en-US">Start Of Construction On Certain Developments [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ObtainingOfTaxCreditsGrantsMember" xlink:label="cli_ObtainingOfTaxCreditsGrantsMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ObtainingOfTaxCreditsGrantsMember_lbl" xml:lang="en-US">Obtaining Of Tax Credits/Grants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ObtainingOfTaxCreditsGrantsMember_lbl" xml:lang="en-US">Obtaining Of Tax Credits Grants [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ObtainingOfTaxCreditsGrantsMember_lbl" xml:lang="en-US">Obtaining Of Tax Credits/Grants [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TotalReturnToShareholdersMember" xlink:label="cli_TotalReturnToShareholdersMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TotalReturnToShareholdersMember_lbl" xml:lang="en-US">Total Return To Shareholders [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TotalReturnToShareholdersMember_lbl" xml:lang="en-US">Total Return To Shareholders [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TotalReturnToShareholdersMember_lbl" xml:lang="en-US">Total Return To Shareholders [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CompletionAndStartOfCertainDevelopmentsMember" xlink:label="cli_CompletionAndStartOfCertainDevelopmentsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CompletionAndStartOfCertainDevelopmentsMember" xlink:to="cli_CompletionAndStartOfCertainDevelopmentsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CompletionAndStartOfCertainDevelopmentsMember_lbl" xml:lang="en-US">Completion And Start Of Certain Developments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CompletionAndStartOfCertainDevelopmentsMember_lbl" xml:lang="en-US">Completion And Start Of Certain Developments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CompletionAndStartOfCertainDevelopmentsMember_lbl" xml:lang="en-US">Completion And Start Of Certain Developments [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FailureToAchieveCertainLevelOfFeeRevenueMember" xlink:label="cli_FailureToAchieveCertainLevelOfFeeRevenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FailureToAchieveCertainLevelOfFeeRevenueMember" xlink:to="cli_FailureToAchieveCertainLevelOfFeeRevenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FailureToAchieveCertainLevelOfFeeRevenueMember_lbl" xml:lang="en-US">Failure To Achieve Certain Level Of Fee Revenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FailureToAchieveCertainLevelOfFeeRevenueMember_lbl" xml:lang="en-US">Failure To Achieve Certain Level Of Fee Revenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FailureToAchieveCertainLevelOfFeeRevenueMember_lbl" xml:lang="en-US">Failure To Achieve Certain Level Of Fee Revenue [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:label="us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:to="us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_lbl" xml:lang="en-US">Business Acquisition, Cost of Acquired Entity, Transaction Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_lbl" xml:lang="en-US">Transaction costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfRealEstateProperties" xlink:label="us-gaap_NumberOfRealEstateProperties" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfRealEstateProperties" xlink:to="us-gaap_NumberOfRealEstateProperties_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfRealEstateProperties_lbl" xml:lang="en-US">Number of real estate properties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NumberOfRealEstateProperties_lbl" xml:lang="en-US">Number of properties</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AreaOfRealEstateProperty" xlink:label="us-gaap_AreaOfRealEstateProperty" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AreaOfRealEstateProperty" xlink:to="us-gaap_AreaOfRealEstateProperty_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AreaOfRealEstateProperty_lbl" xml:lang="en-US">Area of property (in square feet)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AreaOfRealEstateProperty_lbl" xml:lang="en-US">Rentable Square Feet</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfParkingSpaces" xlink:label="cli_NumberOfParkingSpaces" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfParkingSpaces" xlink:to="cli_NumberOfParkingSpaces_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfParkingSpaces_lbl" xml:lang="en-US">Number Of Parking Spaces</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfParkingSpaces_lbl" xml:lang="en-US">Number Of Parking Spaces</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfParkingSpaces_lbl" xml:lang="en-US">Number of parking spaces</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_NumberOfParkingSpaces_lbl" xml:lang="en-US">Garage Parking Spaces</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationConsiderationTransferred1" xlink:to="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xml:lang="en-US">Business Combination, Consideration Transferred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xml:lang="en-US">Acquisition Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xml:lang="en-US">Total purchase price</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireBusinessesGross" xlink:to="us-gaap_PaymentsToAcquireBusinessesGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xml:lang="en-US">Business Acquisition, Cost of Acquired Entity, Cash Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xml:lang="en-US">Business acquisition, cash paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xml:lang="en-US">Cash consideration</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:to="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, at Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xml:lang="en-US">Fair value of contingent consideration</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability_lbl" xml:lang="en-US">Contingent consideration at fair value</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillPurchaseAccountingAdjustments" xlink:to="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" xml:lang="en-US">Goodwill, Purchase Accounting Adjustments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GoodwillPurchaseAccountingAdjustments_lbl" xml:lang="en-US">Purchase accounting adjustments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh" xlink:to="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, Potential Cash Payment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_lbl" xml:lang="en-US">Business acquisition, contingent cash payment</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessAcquisitionContingentConsiderationEarnOutPeriod" xlink:label="cli_BusinessAcquisitionContingentConsiderationEarnOutPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessAcquisitionContingentConsiderationEarnOutPeriod" xlink:to="cli_BusinessAcquisitionContingentConsiderationEarnOutPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessAcquisitionContingentConsiderationEarnOutPeriod_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration Earn Out Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessAcquisitionContingentConsiderationEarnOutPeriod_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration Earn Out Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessAcquisitionContingentConsiderationEarnOutPeriod_lbl" xml:lang="en-US">Business acquisition, earn out period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessAcquisitionContingentConsiderationProbabilityOfOccurrenceOfPaymentEvents" xlink:label="cli_BusinessAcquisitionContingentConsiderationProbabilityOfOccurrenceOfPaymentEvents" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessAcquisitionContingentConsiderationProbabilityOfOccurrenceOfPaymentEvents" xlink:to="cli_BusinessAcquisitionContingentConsiderationProbabilityOfOccurrenceOfPaymentEvents_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessAcquisitionContingentConsiderationProbabilityOfOccurrenceOfPaymentEvents_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, Probability Of Occurrence Of Payment Events</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessAcquisitionContingentConsiderationProbabilityOfOccurrenceOfPaymentEvents_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, Probability Of Occurrence Of Payment Events</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessAcquisitionContingentConsiderationProbabilityOfOccurrenceOfPaymentEvents_lbl" xml:lang="en-US">Probability of occurrence of contingent consideration payment events</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Goodwill" xlink:label="us-gaap_Goodwill" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Goodwill" xlink:to="us-gaap_Goodwill_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Goodwill_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Goodwill Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_Goodwill_lbl" xml:lang="en-US">Goodwill</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessAcquisitionContingentConsiderationMeasurementPeriod" xlink:label="cli_BusinessAcquisitionContingentConsiderationMeasurementPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessAcquisitionContingentConsiderationMeasurementPeriod" xlink:to="cli_BusinessAcquisitionContingentConsiderationMeasurementPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessAcquisitionContingentConsiderationMeasurementPeriod_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration Measurement Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessAcquisitionContingentConsiderationMeasurementPeriod_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration Measurement Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessAcquisitionContingentConsiderationMeasurementPeriod_lbl" xml:lang="en-US">Contingent purchase price measurement period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessAcquisitionContingentConsiderationDiscount" xlink:label="cli_BusinessAcquisitionContingentConsiderationDiscount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessAcquisitionContingentConsiderationDiscount" xlink:to="cli_BusinessAcquisitionContingentConsiderationDiscount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessAcquisitionContingentConsiderationDiscount_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, Discount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessAcquisitionContingentConsiderationDiscount_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration, Discount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessAcquisitionContingentConsiderationDiscount_lbl" xml:lang="en-US">Discount on contingently returnable consideration</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessAcquisitionAcquireeCashDepositedToEscrow" xlink:label="cli_BusinessAcquisitionAcquireeCashDepositedToEscrow" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessAcquisitionAcquireeCashDepositedToEscrow" xlink:to="cli_BusinessAcquisitionAcquireeCashDepositedToEscrow_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessAcquisitionAcquireeCashDepositedToEscrow_lbl" xml:lang="en-US">Business Acquisition, Acquiree Cash Deposited To Escrow</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessAcquisitionAcquireeCashDepositedToEscrow_lbl" xml:lang="en-US">Business Acquisition, Acquiree Cash Deposited To Escrow</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessAcquisitionAcquireeCashDepositedToEscrow_lbl" xml:lang="en-US">Amount of cash deposited to escrow</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FairValueInputsDiscountRate" xlink:label="us-gaap_FairValueInputsDiscountRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsDiscountRate" xlink:to="us-gaap_FairValueInputsDiscountRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FairValueInputsDiscountRate_lbl" xml:lang="en-US">Fair Value Inputs, Discount Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FairValueInputsDiscountRate_lbl" xml:lang="en-US">Discount rate</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FairValueInputsCapitalizationRate" xlink:label="cli_FairValueInputsCapitalizationRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FairValueInputsCapitalizationRate" xlink:to="cli_FairValueInputsCapitalizationRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FairValueInputsCapitalizationRate_lbl" xml:lang="en-US">Fair Value Inputs, Capitalization Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FairValueInputsCapitalizationRate_lbl" xml:lang="en-US">Fair Value Inputs, Capitalization Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FairValueInputsCapitalizationRate_lbl" xml:lang="en-US">Capitalization rate</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="us-gaap_ShortTermDebtTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtTypeAxis" xlink:to="us-gaap_ShortTermDebtTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtTypeAxis_lbl" xml:lang="en-US">Short-term Debt, Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="us-gaap_ShortTermDebtTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermDebtTypeDomain" xlink:to="us-gaap_ShortTermDebtTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xml:lang="en-US">Short Term Debt Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShortTermDebtTypeDomain_lbl" xml:lang="en-US">Short-term Debt, Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ConstructionLoanMember" xlink:label="cli_ConstructionLoanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ConstructionLoanMember" xlink:to="cli_ConstructionLoanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ConstructionLoanMember_lbl" xml:lang="en-US">Construction Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ConstructionLoanMember_lbl" xml:lang="en-US">Construction Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ConstructionLoanMember_lbl" xml:lang="en-US">Construction Loan [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:to="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" xml:lang="en-US">Schedule of Equity Method Investment, Equity Method Investee, Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvesteeNameDomain" xlink:label="us-gaap_EquityMethodInvesteeNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvesteeNameDomain" xlink:to="us-gaap_EquityMethodInvesteeNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvesteeNameDomain_lbl" xml:lang="en-US">Equity Method Investee Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvesteeNameDomain_lbl" xml:lang="en-US">Equity Method Investee, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredFiftyMainStreetLLCMember" xlink:label="cli_OneHundredFiftyMainStreetLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredFiftyMainStreetLLCMember" xlink:to="cli_OneHundredFiftyMainStreetLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredFiftyMainStreetLLCMember_lbl" xml:lang="en-US">150 Main Street, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredFiftyMainStreetLLCMember_lbl" xml:lang="en-US">One Hundred Fifty Main Street L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredFiftyMainStreetLLCMember_lbl" xml:lang="en-US">150 Main Street, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" xml:lang="en-US">Name of Property [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" xml:lang="en-US">Real Estate And Accumulated Depreciation Name Of Property [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" xml:lang="en-US">Name of Property [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EastchesterProjectMember" xlink:label="cli_EastchesterProjectMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EastchesterProjectMember" xlink:to="cli_EastchesterProjectMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EastchesterProjectMember_lbl" xml:lang="en-US">Eastchester Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EastchesterProjectMember_lbl" xml:lang="en-US">Eastchester Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EastchesterProjectMember_lbl" xml:lang="en-US">Eastchester Project [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_LegalEntityAxis_lbl" xml:lang="en-US">Legal Entity [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US">Entity [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="dei_EntityDomain_lbl" xml:lang="en-US">Entity [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_JMPEastchesterLLCMember" xlink:label="cli_JMPEastchesterLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_JMPEastchesterLLCMember" xlink:to="cli_JMPEastchesterLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_JMPEastchesterLLCMember_lbl" xml:lang="en-US">JMP Eastchester, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_JMPEastchesterLLCMember_lbl" xml:lang="en-US">J M P Eastchester L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_JMPEastchesterLLCMember_lbl" xml:lang="en-US">JMP Eastchester, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HudsonValleyLandHoldingsLLCMember" xlink:label="cli_HudsonValleyLandHoldingsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HudsonValleyLandHoldingsLLCMember" xlink:to="cli_HudsonValleyLandHoldingsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HudsonValleyLandHoldingsLLCMember_lbl" xml:lang="en-US">Hudson Valley Land Holdings, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HudsonValleyLandHoldingsLLCMember_lbl" xml:lang="en-US">Hudson Valley Land Holdings L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HudsonValleyLandHoldingsLLCMember_lbl" xml:lang="en-US">Hudson Valley Land Holdings, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:to="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xml:lang="en-US">Equity Method Investment, Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xml:lang="en-US">Percentage of interest in venture</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirdPartyOwnershipPercent" xlink:label="cli_ThirdPartyOwnershipPercent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirdPartyOwnershipPercent" xlink:to="cli_ThirdPartyOwnershipPercent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirdPartyOwnershipPercent_lbl" xml:lang="en-US">Third Party Ownership Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirdPartyOwnershipPercent_lbl" xml:lang="en-US">Third Party Ownership Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirdPartyOwnershipPercent_lbl" xml:lang="en-US">Ownership percentage of third party venture</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_ThirdPartyOwnershipPercent_lbl" xml:lang="en-US">Third party ownership percentage</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EstimatedCostOfProject" xlink:label="cli_EstimatedCostOfProject" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EstimatedCostOfProject" xlink:to="cli_EstimatedCostOfProject_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EstimatedCostOfProject_lbl" xml:lang="en-US">Estimated Cost Of Project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EstimatedCostOfProject_lbl" xml:lang="en-US">Estimated Cost Of Project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EstimatedCostOfProject_lbl" xml:lang="en-US">Total project costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US">Maximum borrowing capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US">Borrowing capacity under the credit facility</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AmountOfProjectCostsFundedByMembers" xlink:label="cli_AmountOfProjectCostsFundedByMembers" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AmountOfProjectCostsFundedByMembers" xlink:to="cli_AmountOfProjectCostsFundedByMembers_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AmountOfProjectCostsFundedByMembers_lbl" xml:lang="en-US">Amount Of Project Costs Funded By Members</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AmountOfProjectCostsFundedByMembers_lbl" xml:lang="en-US">Amount Of Project Costs Funded By Members</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AmountOfProjectCostsFundedByMembers_lbl" xml:lang="en-US">Amount of project costs funded by members</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VentureCapitalGainsLossesNet" xlink:label="us-gaap_VentureCapitalGainsLossesNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VentureCapitalGainsLossesNet" xlink:to="us-gaap_VentureCapitalGainsLossesNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VentureCapitalGainsLossesNet_lbl" xml:lang="en-US">Venture Capital Gain (Loss), Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_VentureCapitalGainsLossesNet_lbl" xml:lang="en-US">Holding period gain (loss)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis" xlink:to="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" xml:lang="en-US">Disposal Group Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain" xlink:to="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" xml:lang="en-US">Disposal Groups Including Discontinued Operations Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" xml:lang="en-US">Disposal Groups, Including Discontinued Operations, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KeystonePortfolioMember" xlink:label="cli_KeystonePortfolioMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KeystonePortfolioMember" xlink:to="cli_KeystonePortfolioMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KeystonePortfolioMember_lbl" xml:lang="en-US">Keystone Portfolio [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KeystonePortfolioMember_lbl" xml:lang="en-US">Keystone Portfolio [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KeystonePortfolioMember_lbl" xml:lang="en-US">Keystone Portfolio [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="us-gaap_StatementScenarioAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementScenarioAxis" xlink:to="us-gaap_StatementScenarioAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementScenarioAxis_lbl" xml:lang="en-US">Scenario [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="us-gaap_ScenarioUnspecifiedDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioUnspecifiedDomain" xlink:to="us-gaap_ScenarioUnspecifiedDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US">Scenario Unspecified [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US">Scenario, Unspecified [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScenarioForecastMember" xlink:label="us-gaap_ScenarioForecastMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioForecastMember" xlink:to="us-gaap_ScenarioForecastMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScenarioForecastMember_lbl" xml:lang="en-US">Scenario Forecast [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ScenarioForecastMember_lbl" xml:lang="en-US">Scenario, Forecast [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfBuildingsOnPropertiesSold" xlink:label="cli_NumberOfBuildingsOnPropertiesSold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfBuildingsOnPropertiesSold" xlink:to="cli_NumberOfBuildingsOnPropertiesSold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfBuildingsOnPropertiesSold_lbl" xml:lang="en-US">Number Of Buildings On Properties Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfBuildingsOnPropertiesSold_lbl" xml:lang="en-US">Number of buildings on properties sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfBuildingsOnPropertiesSold_lbl" xml:lang="en-US">Number of Buildings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_NumberOfBuildingsOnPropertiesSold_lbl" xml:lang="en-US">Number of properties sold</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AreaOfRealEstatePropertySold" xlink:label="cli_AreaOfRealEstatePropertySold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AreaOfRealEstatePropertySold" xlink:to="cli_AreaOfRealEstatePropertySold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AreaOfRealEstatePropertySold_lbl" xml:lang="en-US">Area Of Real Estate Property Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AreaOfRealEstatePropertySold_lbl" xml:lang="en-US">Area of property sold (in square feet)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AreaOfRealEstatePropertySold_lbl" xml:lang="en-US">Rentable Square Feet</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_AreaOfRealEstatePropertySold_lbl" xml:lang="en-US">Area of property sold</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DiscontinuedOperationRealEstateSalePrice" xlink:label="cli_DiscontinuedOperationRealEstateSalePrice" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DiscontinuedOperationRealEstateSalePrice" xlink:to="cli_DiscontinuedOperationRealEstateSalePrice_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DiscontinuedOperationRealEstateSalePrice_lbl" xml:lang="en-US">Discontinued Operation, Real Estate, Sale Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DiscontinuedOperationRealEstateSalePrice_lbl" xml:lang="en-US">Discontinued Operation, Real Estate, Sale Price</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DiscontinuedOperationRealEstateSalePrice_lbl" xml:lang="en-US">Sale price of property</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment" xlink:to="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xml:lang="en-US">Proceeds from Sale of Real Estate Held-for-investment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xml:lang="en-US">Net Sales Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xml:lang="en-US">Sales proceeds</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PartnersCapital" xlink:label="us-gaap_PartnersCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapital" xlink:to="us-gaap_PartnersCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapital_lbl" xml:lang="en-US">Partners' Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PartnersCapital_lbl" xml:lang="en-US">Capital balance</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfPropertiesWithSeniorInterest" xlink:label="cli_NumberOfPropertiesWithSeniorInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfPropertiesWithSeniorInterest" xlink:to="cli_NumberOfPropertiesWithSeniorInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfPropertiesWithSeniorInterest_lbl" xml:lang="en-US">Number Of Properties With Senior Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfPropertiesWithSeniorInterest_lbl" xml:lang="en-US">Number Of Properties With Senior Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfPropertiesWithSeniorInterest_lbl" xml:lang="en-US">Number of properties with senior pari passu interest</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PartnersCapitalInProepertiesInWhichSeniorInterestIsHeld" xlink:label="cli_PartnersCapitalInProepertiesInWhichSeniorInterestIsHeld" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PartnersCapitalInProepertiesInWhichSeniorInterestIsHeld" xlink:to="cli_PartnersCapitalInProepertiesInWhichSeniorInterestIsHeld_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PartnersCapitalInProepertiesInWhichSeniorInterestIsHeld_lbl" xml:lang="en-US">Partners Capital In Proeperties In Which Senior Interest Is Held</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PartnersCapitalInProepertiesInWhichSeniorInterestIsHeld_lbl" xml:lang="en-US">Partners Capital In Proeperties In Which Senior Interest Is Held</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PartnersCapitalInProepertiesInWhichSeniorInterestIsHeld_lbl" xml:lang="en-US">Capital balance in proeperties in which senior pari passu interest is held</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InternalRateOfReturnForSeniorInterestHolder" xlink:label="cli_InternalRateOfReturnForSeniorInterestHolder" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InternalRateOfReturnForSeniorInterestHolder" xlink:to="cli_InternalRateOfReturnForSeniorInterestHolder_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InternalRateOfReturnForSeniorInterestHolder_lbl" xml:lang="en-US">Internal Rate Of Return For Senior Interest Holder</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InternalRateOfReturnForSeniorInterestHolder_lbl" xml:lang="en-US">Internal Rate Of Return For Senior Interest Holder</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InternalRateOfReturnForSeniorInterestHolder_lbl" xml:lang="en-US">Senior pari passu equity internal rate of return</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InternalRateOfReturnForSubordinatedInterestHolder" xlink:label="cli_InternalRateOfReturnForSubordinatedInterestHolder" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InternalRateOfReturnForSubordinatedInterestHolder" xlink:to="cli_InternalRateOfReturnForSubordinatedInterestHolder_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InternalRateOfReturnForSubordinatedInterestHolder_lbl" xml:lang="en-US">Internal Rate Of Return For Subordinated Interest Holder</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InternalRateOfReturnForSubordinatedInterestHolder_lbl" xml:lang="en-US">Internal Rate Of Return For Subordinated Interest Holder</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InternalRateOfReturnForSubordinatedInterestHolder_lbl" xml:lang="en-US">Subordinated equity internal rate of return</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfAgreementExtensions" xlink:label="cli_NumberOfAgreementExtensions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfAgreementExtensions" xlink:to="cli_NumberOfAgreementExtensions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfAgreementExtensions_lbl" xml:lang="en-US">Number Of Agreement Extensions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfAgreementExtensions_lbl" xml:lang="en-US">Number Of Agreement Extensions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfAgreementExtensions_lbl" xml:lang="en-US">Number of agreement extensions</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AgreementExtensionPeriod" xlink:label="cli_AgreementExtensionPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AgreementExtensionPeriod" xlink:to="cli_AgreementExtensionPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AgreementExtensionPeriod_lbl" xml:lang="en-US">Agreement Extension Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AgreementExtensionPeriod_lbl" xml:lang="en-US">Agreement Extension Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AgreementExtensionPeriod_lbl" xml:lang="en-US">Agreement extension period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfPropertiesWithFirstOfferRights" xlink:label="cli_NumberOfPropertiesWithFirstOfferRights" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfPropertiesWithFirstOfferRights" xlink:to="cli_NumberOfPropertiesWithFirstOfferRights_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfPropertiesWithFirstOfferRights_lbl" xml:lang="en-US">Number Of Properties With First Offer Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfPropertiesWithFirstOfferRights_lbl" xml:lang="en-US">Number Of Properties With First Offer Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfPropertiesWithFirstOfferRights_lbl" xml:lang="en-US">Number of properties with first offer rights</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="us-gaap_StatementGeographicalAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementGeographicalAxis" xlink:to="us-gaap_StatementGeographicalAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementGeographicalAxis_lbl" xml:lang="en-US">Geographical [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="us-gaap_SegmentGeographicalDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentGeographicalDomain" xlink:to="us-gaap_SegmentGeographicalDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentGeographicalDomain_lbl" xml:lang="en-US">Segment Geographical [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentGeographicalDomain_lbl" xml:lang="en-US">Geographical [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoselandParsippanyWarrenAndLyndhurstNewJerseyMember" xlink:label="cli_RoselandParsippanyWarrenAndLyndhurstNewJerseyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoselandParsippanyWarrenAndLyndhurstNewJerseyMember" xlink:to="cli_RoselandParsippanyWarrenAndLyndhurstNewJerseyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoselandParsippanyWarrenAndLyndhurstNewJerseyMember_lbl" xml:lang="en-US">Roseland, Parsippany, Warren And Lyndhurst, New Jersey [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoselandParsippanyWarrenAndLyndhurstNewJerseyMember_lbl" xml:lang="en-US">Roseland Parsippany Warren And Lyndhurst New Jersey [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoselandParsippanyWarrenAndLyndhurstNewJerseyMember_lbl" xml:lang="en-US">Roseland, Parsippany, Warren And Lyndhurst, New Jersey [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NewJerseyAndNewYorkMember" xlink:label="cli_NewJerseyAndNewYorkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NewJerseyAndNewYorkMember" xlink:to="cli_NewJerseyAndNewYorkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NewJerseyAndNewYorkMember_lbl" xml:lang="en-US">New Jersey And New York [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NewJerseyAndNewYorkMember_lbl" xml:lang="en-US">New Jersey And New York [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NewJerseyAndNewYorkMember_lbl" xml:lang="en-US">New Jersey And New York [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MorrisPlainsAndUpperSaddleRiverNewJerseyMember" xlink:label="cli_MorrisPlainsAndUpperSaddleRiverNewJerseyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MorrisPlainsAndUpperSaddleRiverNewJerseyMember" xlink:to="cli_MorrisPlainsAndUpperSaddleRiverNewJerseyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MorrisPlainsAndUpperSaddleRiverNewJerseyMember_lbl" xml:lang="en-US">Morris Plains And Upper Saddle River, New Jersey [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MorrisPlainsAndUpperSaddleRiverNewJerseyMember_lbl" xml:lang="en-US">Morris Plains And Upper Saddle River New Jersey [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MorrisPlainsAndUpperSaddleRiverNewJerseyMember_lbl" xml:lang="en-US">Morris Plains And Upper Saddle River, New Jersey [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EastRutherfordNewJerseyPropertyMember" xlink:label="cli_EastRutherfordNewJerseyPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EastRutherfordNewJerseyPropertyMember" xlink:to="cli_EastRutherfordNewJerseyPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EastRutherfordNewJerseyPropertyMember_lbl" xml:lang="en-US">East Rutherford, New Jersey Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EastRutherfordNewJerseyPropertyMember_lbl" xml:lang="en-US">East Rutherford New Jersey Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EastRutherfordNewJerseyPropertyMember_lbl" xml:lang="en-US">East Rutherford, New Jersey Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NewarkNewJerseyMember" xlink:label="cli_NewarkNewJerseyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NewarkNewJerseyMember" xlink:to="cli_NewarkNewJerseyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NewarkNewJerseyMember_lbl" xml:lang="en-US">Newark, New Jersey [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NewarkNewJerseyMember_lbl" xml:lang="en-US">Newark New Jersey [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NewarkNewJerseyMember_lbl" xml:lang="en-US">Newark, New Jersey [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfImpairedRealEstateProperties" xlink:label="cli_NumberOfImpairedRealEstateProperties" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfImpairedRealEstateProperties" xlink:to="cli_NumberOfImpairedRealEstateProperties_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfImpairedRealEstateProperties_lbl" xml:lang="en-US">Number Of Impaired Real Estate Properties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfImpairedRealEstateProperties_lbl" xml:lang="en-US">Number Of Impaired Real Estate Properties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfImpairedRealEstateProperties_lbl" xml:lang="en-US">Number of impaired properties</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateEstimatedAmountRecoverableAtSale" xlink:label="cli_RealEstateEstimatedAmountRecoverableAtSale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateEstimatedAmountRecoverableAtSale" xlink:to="cli_RealEstateEstimatedAmountRecoverableAtSale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateEstimatedAmountRecoverableAtSale_lbl" xml:lang="en-US">Real Estate, Estimated Amount Recoverable At Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateEstimatedAmountRecoverableAtSale_lbl" xml:lang="en-US">Real Estate, Estimated Amount Recoverable At Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstateEstimatedAmountRecoverableAtSale_lbl" xml:lang="en-US">Estimated amount recoverable at sale</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgageLoanMaturityDate" xlink:label="cli_MortgageLoanMaturityDate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgageLoanMaturityDate" xlink:to="cli_MortgageLoanMaturityDate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgageLoanMaturityDate_lbl" xml:lang="en-US">Mortgage Loan Maturity Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgageLoanMaturityDate_lbl" xml:lang="en-US">Mortgage Loan Maturity Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgageLoanMaturityDate_lbl" xml:lang="en-US">Mortgage loan, maturity date</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages" xlink:label="us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages" xlink:to="us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages_lbl" xml:lang="en-US">Mortgage Loans on Real Estate, Carrying Amount of Mortgages</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages_lbl" xml:lang="en-US">Mortgage loans, carrying amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages_lbl" xml:lang="en-US">Mortgage loan carrying amount</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xml:lang="en-US">Schedule of Business Acquisitions, by Acquisition [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="us-gaap_BusinessAcquisitionAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xml:lang="en-US">Business Acquisition [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US">Business Acquisition Acquiree [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AlterraAtOverlookRidgeIMember" xlink:label="cli_AlterraAtOverlookRidgeIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AlterraAtOverlookRidgeIMember" xlink:to="cli_AlterraAtOverlookRidgeIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AlterraAtOverlookRidgeIMember_lbl" xml:lang="en-US">Alterra At Overlook Ridge IA [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AlterraAtOverlookRidgeIMember_lbl" xml:lang="en-US">Alterra At Overlook Ridge I [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AlterraAtOverlookRidgeIBMember_lbl" xml:lang="en-US">Alterra At Overlook Ridge I B [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AlterraAtOverlookRidgeIBMember_lbl" xml:lang="en-US">Alterra At Overlook Ridge IB [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfPropertiesAcquired_lbl" xml:lang="en-US">Number Of Properties Acquired</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfPropertiesAcquired_lbl" xml:lang="en-US">Number of Properties</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfUnitsOnPropertyAcquired_lbl" xml:lang="en-US">Number Of Units On Property Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfUnitsOnPropertyAcquired_lbl" xml:lang="en-US">Number Of Units On Property Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfUnitsOnPropertyAcquired_lbl" xml:lang="en-US">Number of Apartment Units</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessCombinationAmountOfCashFromQualifiedIntermediary" xlink:label="cli_BusinessCombinationAmountOfCashFromQualifiedIntermediary" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessCombinationAmountOfCashFromQualifiedIntermediary_lbl" xml:lang="en-US">Business Combination, Amount Of Cash From Qualified Intermediary</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessCombinationAmountOfCashFromQualifiedIntermediary_lbl" xml:lang="en-US">Amount of cash funded by qualified intermediary</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand_lbl" xml:lang="en-US">Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand_lbl" xml:lang="en-US">Land and leasehold interests</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Buildings</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings_lbl" xml:lang="en-US">Buildings and improvements</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquipment_lbl" xml:lang="en-US">Furniture, fixtures and equipment</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractValue" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractValue" xlink:to="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractValue_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Contract Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractValue_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Contract Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractValue_lbl" xml:lang="en-US">Contract value acquired</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeases" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeases" xlink:to="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeases_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Above Market Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeases_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Above Market Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAboveMarketLeases_lbl" xml:lang="en-US">Above market leases</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeases" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeases" xlink:to="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeases_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, In Place Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeases_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, In Place Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInPlaceLeases_lbl" xml:lang="en-US">In-place lease values</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_lbl" xml:lang="en-US">Other assets acquired</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Assets Acquired</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xml:lang="en-US">Total assets acquired</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt_lbl" xml:lang="en-US">Less: Mortgages and loans payable assumed</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBelowMarketLeases" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBelowMarketLeases" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBelowMarketLeases_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Below Market Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBelowMarketLeases_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Below Market Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBelowMarketLeases_lbl" xml:lang="en-US">Less: Below market lease values</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Other Noncurrent Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther_lbl" xml:lang="en-US">Other liabilities assumed (including contingent consideration at fair value of $10,010)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" xlink:label="us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue_lbl" xml:lang="en-US">Noncontrolling interest recorded upon consolidation</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_lbl" xml:lang="en-US">Business Acquisition, Purchase Price Allocation, Liabilities Assumed</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:to="us-gaap_FiniteLivedIntangibleAssetUsefulLife_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife_lbl" xml:lang="en-US">Finite-Lived Intangible Asset, Useful Life</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife_lbl" xml:lang="en-US">Amortization period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedConstructionInProgress" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedConstructionInProgress" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedConstructionInProgress" xlink:to="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedConstructionInProgress_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedConstructionInProgress_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Construction In Progress</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedConstructionInProgress_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed Construction In Progress</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedConstructionInProgress_lbl" xml:lang="en-US">Construction in progress</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xml:lang="en-US">Real estate recorded upon consolidation</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xml:lang="en-US">Cash and cash equivalents</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther_lbl" xml:lang="en-US">Other assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable_lbl" xml:lang="en-US">Accounts payable</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentNet" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentNet" xlink:to="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentNet_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Current, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentNet_lbl" xml:lang="en-US">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Current, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentNet_lbl" xml:lang="en-US">Working capital recorded upon consolidation</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest" xlink:to="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest_lbl" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest_lbl" xml:lang="en-US">Net assets recorded upon consolidation</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourteenSylvanWayMember" xlink:label="cli_FourteenSylvanWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourteenSylvanWayMember" xlink:to="cli_FourteenSylvanWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourteenSylvanWayMember_lbl" xml:lang="en-US">14 Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourteenSylvanWayMember_lbl" xml:lang="en-US">Fourteen Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourteenSylvanWayMember_lbl" xml:lang="en-US">14 Sylvan Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortImperialSouthFourAndFiveMember" xlink:label="cli_PortImperialSouthFourAndFiveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortImperialSouthFourAndFiveMember" xlink:to="cli_PortImperialSouthFourAndFiveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortImperialSouthFourAndFiveMember_lbl" xml:lang="en-US">Port Imperial South 4/5 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortImperialSouthFourAndFiveMember_lbl" xml:lang="en-US">Port Imperial South Four And Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortImperialSouthFourAndFiveMember_lbl" xml:lang="en-US">Port Imperial South 4/5 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfBuildingsOnPropertiesCommencingInitialOperations" xlink:label="cli_NumberOfBuildingsOnPropertiesCommencingInitialOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfBuildingsOnPropertiesCommencingInitialOperations" xlink:to="cli_NumberOfBuildingsOnPropertiesCommencingInitialOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfBuildingsOnPropertiesCommencingInitialOperations_lbl" xml:lang="en-US">Number Of Buildings On Properties Commencing Initial Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfBuildingsOnPropertiesCommencingInitialOperations_lbl" xml:lang="en-US">Number Of Buildings On Properties Commencing Initial Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfBuildingsOnPropertiesCommencingInitialOperations_lbl" xml:lang="en-US">Number of Buildings</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AreaOfRealEstatePropertyCommencingInitialOperations" xlink:label="cli_AreaOfRealEstatePropertyCommencingInitialOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AreaOfRealEstatePropertyCommencingInitialOperations" xlink:to="cli_AreaOfRealEstatePropertyCommencingInitialOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AreaOfRealEstatePropertyCommencingInitialOperations_lbl" xml:lang="en-US">Area Of Real Estate Property Commencing Initial Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AreaOfRealEstatePropertyCommencingInitialOperations_lbl" xml:lang="en-US">Area Of Real Estate Property Commencing Initial Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AreaOfRealEstatePropertyCommencingInitialOperations_lbl" xml:lang="en-US">Rentable Square Feet</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateDevelopmentCostsIncurred" xlink:label="cli_RealEstateDevelopmentCostsIncurred" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateDevelopmentCostsIncurred" xlink:to="cli_RealEstateDevelopmentCostsIncurred_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateDevelopmentCostsIncurred_lbl" xml:lang="en-US">Real Estate Development Costs Incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateDevelopmentCostsIncurred_lbl" xml:lang="en-US">Real Estate Development Costs Incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstateDevelopmentCostsIncurred_lbl" xml:lang="en-US">Development Costs Incurred by Company</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DevelopmentCostsPerSquareFoot" xlink:label="cli_DevelopmentCostsPerSquareFoot" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DevelopmentCostsPerSquareFoot" xlink:to="cli_DevelopmentCostsPerSquareFoot_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DevelopmentCostsPerSquareFoot_lbl" xml:lang="en-US">Development Costs Per Square Foot</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DevelopmentCostsPerSquareFoot_lbl" xml:lang="en-US">Development Costs Per Square Foot</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DevelopmentCostsPerSquareFoot_lbl" xml:lang="en-US">Development Costs Per Square Foot</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_lbl" xml:lang="en-US">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NineteenSkylineDriveMember" xlink:label="cli_NineteenSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NineteenSkylineDriveMember" xlink:to="cli_NineteenSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NineteenSkylineDriveMember_lbl" xml:lang="en-US">Nineteen Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NineteenSkylineDriveMember_lbl" xml:lang="en-US">Nineteen Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NineteenSkylineDriveMember_lbl" xml:lang="en-US">19 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiftyFiveCorporateDriveMember" xlink:label="cli_FiftyFiveCorporateDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiftyFiveCorporateDriveMember" xlink:to="cli_FiftyFiveCorporateDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiftyFiveCorporateDriveMember_lbl" xml:lang="en-US">Fifty Five Corporate Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiftyFiveCorporateDriveMember_lbl" xml:lang="en-US">Fifty Five Corporate Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiftyFiveCorporateDriveMember_lbl" xml:lang="en-US">55 Corporate Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredRiserRoadMember" xlink:label="cli_TwoHundredRiserRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredRiserRoadMember" xlink:to="cli_TwoHundredRiserRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredRiserRoadMember_lbl" xml:lang="en-US">200 Riser Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredRiserRoadMember_lbl" xml:lang="en-US">Two Hundred Riser Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredRiserRoadMember_lbl" xml:lang="en-US">200 Riser Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenHundredSeventySevenPassaicAvenueMember" xlink:label="cli_SevenHundredSeventySevenPassaicAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenHundredSeventySevenPassaicAvenueMember" xlink:to="cli_SevenHundredSeventySevenPassaicAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenHundredSeventySevenPassaicAvenueMember_lbl" xml:lang="en-US">Seven Hundred Seventy Seven Passaic Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenHundredSeventySevenPassaicAvenueMember_lbl" xml:lang="en-US">Seven Hundred Seventy Seven Passaic Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenHundredSeventySevenPassaicAvenueMember_lbl" xml:lang="en-US">777 Passaic Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixteenAndEighteenSentryParkWestMember" xlink:label="cli_SixteenAndEighteenSentryParkWestMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixteenAndEighteenSentryParkWestMember" xlink:to="cli_SixteenAndEighteenSentryParkWestMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixteenAndEighteenSentryParkWestMember_lbl" xml:lang="en-US">16 And 18 Sentry Park West [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixteenAndEighteenSentryParkWestMember_lbl" xml:lang="en-US">Sixteen And Eighteen Sentry Park West [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixteenAndEighteenSentryParkWestMember_lbl" xml:lang="en-US">16 And 18 Sentry Park West [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiftyOneImcloneDriveMember" xlink:label="cli_FiftyOneImcloneDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiftyOneImcloneDriveMember" xlink:to="cli_FiftyOneImcloneDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiftyOneImcloneDriveMember_lbl" xml:lang="en-US">Fifty One Imclone Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiftyOneImcloneDriveMember_lbl" xml:lang="en-US">Fifty One Imclone Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiftyOneImcloneDriveMember_lbl" xml:lang="en-US">51 Imclone Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FortyRichardsAvenueMember" xlink:label="cli_FortyRichardsAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FortyRichardsAvenueMember" xlink:to="cli_FortyRichardsAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FortyRichardsAvenueMember_lbl" xml:lang="en-US">40 Richards Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FortyRichardsAvenueMember_lbl" xml:lang="en-US">Forty Richards Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FortyRichardsAvenueMember_lbl" xml:lang="en-US">40 Richards Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHunderedSixAllenRoadMember" xlink:label="cli_OneHunderedSixAllenRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHunderedSixAllenRoadMember" xlink:to="cli_OneHunderedSixAllenRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHunderedSixAllenRoadMember_lbl" xml:lang="en-US">106 Allen Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHunderedSixAllenRoadMember_lbl" xml:lang="en-US">One Hundered Six Allen Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHunderedSixAllenRoadMember_lbl" xml:lang="en-US">106 Allen Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PennsylvaniaOfficePortfolioMember" xlink:label="cli_PennsylvaniaOfficePortfolioMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PennsylvaniaOfficePortfolioMember" xlink:to="cli_PennsylvaniaOfficePortfolioMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PennsylvaniaOfficePortfolioMember_lbl" xml:lang="en-US">Pennsylvania Office Portfolio [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PennsylvaniaOfficePortfolioMember_lbl" xml:lang="en-US">Pennsylvania Office Portfolio [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PennsylvaniaOfficePortfolioMember_lbl" xml:lang="en-US">Pennsylvania Office Portfolio [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NinetyFiveChestnutRidgeRoadMember" xlink:label="cli_NinetyFiveChestnutRidgeRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NinetyFiveChestnutRidgeRoadMember" xlink:to="cli_NinetyFiveChestnutRidgeRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NinetyFiveChestnutRidgeRoadMember_lbl" xml:lang="en-US">95 Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NinetyFiveChestnutRidgeRoadMember_lbl" xml:lang="en-US">Ninety Five Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NinetyFiveChestnutRidgeRoadMember_lbl" xml:lang="en-US">95 Chestnut Ridge Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_StrawbridgeRoadMember" xlink:label="cli_StrawbridgeRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_StrawbridgeRoadMember" xlink:to="cli_StrawbridgeRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_StrawbridgeRoadMember_lbl" xml:lang="en-US">Strawbridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_StrawbridgeRoadMember_lbl" xml:lang="en-US">Strawbridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_StrawbridgeRoadMember_lbl" xml:lang="en-US">Strawbridge Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoThousandTwoHundredRenaisssanceBoulevardMember" xlink:label="cli_TwoThousandTwoHundredRenaisssanceBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoThousandTwoHundredRenaisssanceBoulevardMember" xlink:to="cli_TwoThousandTwoHundredRenaisssanceBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoThousandTwoHundredRenaisssanceBoulevardMember_lbl" xml:lang="en-US">2200 Renaisssance Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoThousandTwoHundredRenaisssanceBoulevardMember_lbl" xml:lang="en-US">Two Thousand Two Hundred Renaisssance Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoThousandTwoHundredRenaisssanceBoulevardMember_lbl" xml:lang="en-US">2200 Renaisssance Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KeystoneAffiliatesMember" xlink:label="cli_KeystoneAffiliatesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KeystoneAffiliatesMember" xlink:to="cli_KeystoneAffiliatesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KeystoneAffiliatesMember_lbl" xml:lang="en-US">Keystone Affiliates [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KeystoneAffiliatesMember_lbl" xml:lang="en-US">Keystone Affiliates [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KeystoneAffiliatesMember_lbl" xml:lang="en-US">Keystone Affiliates [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:to="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_lbl" xml:lang="en-US">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet_lbl" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipmentNet_lbl" xml:lang="en-US">Net Book Value</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations" xlink:label="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations" xlink:to="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_lbl" xml:lang="en-US">Gain (Loss) on Disposition of Real Estate, Discontinued Operations</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_lbl" xml:lang="en-US">Gain on sale of property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_lbl" xml:lang="en-US">Realized Gain (loss)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount" xlink:to="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_lbl" xml:lang="en-US">Loans and Leases Receivable, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_lbl" xml:lang="en-US">Note receivable</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:to="us-gaap_LoansAndLeasesReceivableNetReportedAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount_lbl" xml:lang="en-US">Loans and Leases Receivable, Net Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount_lbl" xml:lang="en-US">Note receivable, net present value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount_lbl" xml:lang="en-US">Notes receivable</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DiscontinuedOperationsAssetImpairmentCharges" xlink:label="cli_DiscontinuedOperationsAssetImpairmentCharges" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DiscontinuedOperationsAssetImpairmentCharges" xlink:to="cli_DiscontinuedOperationsAssetImpairmentCharges_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DiscontinuedOperationsAssetImpairmentCharges_lbl" xml:lang="en-US">Discontinued Operations, Asset Impairment Charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DiscontinuedOperationsAssetImpairmentCharges_lbl" xml:lang="en-US">Discontinued Operations, Asset Impairment Charges</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_DiscontinuedOperationsAssetImpairmentCharges_lbl" xml:lang="en-US">Impairments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DiscontinuedOperationsAssetImpairmentCharges_lbl" xml:lang="en-US">Impairments</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfLandParcelsSold" xlink:label="cli_NumberOfLandParcelsSold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfLandParcelsSold" xlink:to="cli_NumberOfLandParcelsSold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfLandParcelsSold_lbl" xml:lang="en-US">Number Of Land Parcels Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfLandParcelsSold_lbl" xml:lang="en-US">Number Of Land Parcels Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfLandParcelsSold_lbl" xml:lang="en-US">Number of land parcels sold</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ProceedsFromSaleOfRealEstateAmountHeldByIntermediaryForReinvestment" xlink:label="cli_ProceedsFromSaleOfRealEstateAmountHeldByIntermediaryForReinvestment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ProceedsFromSaleOfRealEstateAmountHeldByIntermediaryForReinvestment" xlink:to="cli_ProceedsFromSaleOfRealEstateAmountHeldByIntermediaryForReinvestment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ProceedsFromSaleOfRealEstateAmountHeldByIntermediaryForReinvestment_lbl" xml:lang="en-US">Proceeds From Sale Of Real Estate, Amount Held By Intermediary For Reinvestment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ProceedsFromSaleOfRealEstateAmountHeldByIntermediaryForReinvestment_lbl" xml:lang="en-US">Proceeds From Sale Of Real Estate, Amount Held By Intermediary For Reinvestment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ProceedsFromSaleOfRealEstateAmountHeldByIntermediaryForReinvestment_lbl" xml:lang="en-US">Amount held by intermediary for reinvestment</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateNewMortgageLoans" xlink:label="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans" xlink:to="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans_lbl" xml:lang="en-US">Mortgage Loans on Real Estate, New Mortgage Loans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans_lbl" xml:lang="en-US">New mortgage loan</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateNumberOfLoans" xlink:label="us-gaap_MortgageLoansOnRealEstateNumberOfLoans" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateNumberOfLoans" xlink:to="us-gaap_MortgageLoansOnRealEstateNumberOfLoans_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateNumberOfLoans_lbl" xml:lang="en-US">Mortgage Loans on Real Estate, Number of Loans</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateNumberOfLoans_lbl" xml:lang="en-US">Number of mortgage loans</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgageLoansOnRealEstateAmountOfMortgageFundedAtClosing" xlink:label="cli_MortgageLoansOnRealEstateAmountOfMortgageFundedAtClosing" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgageLoansOnRealEstateAmountOfMortgageFundedAtClosing" xlink:to="cli_MortgageLoansOnRealEstateAmountOfMortgageFundedAtClosing_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgageLoansOnRealEstateAmountOfMortgageFundedAtClosing_lbl" xml:lang="en-US">Mortgage Loans On Real Estate, Amount Of Mortgage Funded At Closing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgageLoansOnRealEstateAmountOfMortgageFundedAtClosing_lbl" xml:lang="en-US">Mortgage Loans On Real Estate, Amount Of Mortgage Funded At Closing</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgageLoansOnRealEstateAmountOfMortgageFundedAtClosing_lbl" xml:lang="en-US">Amount of mortgage funded</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgageLoanMaturityPeriod" xlink:label="cli_MortgageLoanMaturityPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgageLoanMaturityPeriod" xlink:to="cli_MortgageLoanMaturityPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgageLoanMaturityPeriod_lbl" xml:lang="en-US">Mortgage Loan Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgageLoanMaturityPeriod_lbl" xml:lang="en-US">Mortgage Loan Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgageLoanMaturityPeriod_lbl" xml:lang="en-US">Mortgage loan, maturity period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentExtensionPeriod" xlink:label="cli_DebtInstrumentExtensionPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentExtensionPeriod" xlink:to="cli_DebtInstrumentExtensionPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentExtensionPeriod_lbl" xml:lang="en-US">Debt Instrument Extension Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentExtensionPeriod_lbl" xml:lang="en-US">Debt Instrument Extension Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentExtensionPeriod_lbl" xml:lang="en-US">Loan extension period</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US">Spread over LIBOR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US">Spread over LIBOR</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US">Interest Rate - Applicable Basis Points Above LIBOR</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InitialInternalRateOfReturn" xlink:label="cli_InitialInternalRateOfReturn" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InitialInternalRateOfReturn" xlink:to="cli_InitialInternalRateOfReturn_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InitialInternalRateOfReturn_lbl" xml:lang="en-US">Initial Internal Rate Of Return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InitialInternalRateOfReturn_lbl" xml:lang="en-US">Initial Internal Rate Of Return</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InternalRateOfReturn_lbl" xml:lang="en-US">Internal rate of return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InternalRateOfReturn_lbl" xml:lang="en-US">Internal rate of return</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OfficeBuildingMember" xlink:label="us-gaap_OfficeBuildingMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OfficeBuildingMember_lbl" xml:lang="en-US">Office Building [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ClassificationOfVariableInterestEntityDomain" xlink:label="us-gaap_ClassificationOfVariableInterestEntityDomain" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ClassificationOfVariableInterestEntityDomain_lbl" xml:lang="en-US">Variable Interest Entity, Classification [Domain]</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember" xlink:to="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xml:lang="en-US">Variable Interest Entity Not Primary Beneficiary [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xml:lang="en-US">Variable Interest Entity [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureOfficeAndRetailBuildingsMember" xlink:label="cli_UnconsolidatedJointVentureOfficeAndRetailBuildingsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureOfficeAndRetailBuildingsMember" xlink:to="cli_UnconsolidatedJointVentureOfficeAndRetailBuildingsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureOfficeAndRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Office And Retail Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureOfficeAndRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Office And Retail Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureOfficeAndRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Office And Retail Buildings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureRetailBuildingsMember" xlink:label="cli_UnconsolidatedJointVentureRetailBuildingsMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Retail Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Retail Buildings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureRetailBuildingsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Retail Buildings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureCommercialPropertyMember" xlink:label="cli_UnconsolidatedJointVentureCommercialPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureCommercialPropertyMember" xlink:to="cli_UnconsolidatedJointVentureCommercialPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureCommercialPropertyMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Commercial Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureCommercialPropertyMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Commercial Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureCommercialPropertyMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Commercial Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureDevelopmentProjectsMember" xlink:label="cli_UnconsolidatedJointVentureDevelopmentProjectsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureDevelopmentProjectsMember" xlink:to="cli_UnconsolidatedJointVentureDevelopmentProjectsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureDevelopmentProjectsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Development Projects [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureDevelopmentProjectsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Development Projects [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureDevelopmentProjectsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Development Projects [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnconsolidatedJointVentureLandParcelsMember" xlink:label="cli_UnconsolidatedJointVentureLandParcelsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnconsolidatedJointVentureLandParcelsMember" xlink:to="cli_UnconsolidatedJointVentureLandParcelsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnconsolidatedJointVentureLandParcelsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Land Parcels [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnconsolidatedJointVentureLandParcelsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Land Parcels [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnconsolidatedJointVentureLandParcelsMember_lbl" xml:lang="en-US">Unconsolidated Joint Venture Land Parcels [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl" xml:lang="en-US">Schedule of Equity Method Investments [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DueFromJointVentures" xlink:label="us-gaap_DueFromJointVentures" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueFromJointVentures_lbl" xml:lang="en-US">Due from Joint Ventures</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DueFromJointVentures_lbl" xml:lang="en-US">Accounts receivable due from unconsolidated joint ventures</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfVariableInterestEntities" xlink:label="cli_NumberOfVariableInterestEntities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfVariableInterestEntities" xlink:to="cli_NumberOfVariableInterestEntities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfVariableInterestEntities_lbl" xml:lang="en-US">Number Of Variable Interest Entities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfVariableInterestEntities_lbl" xml:lang="en-US">Number Of Variable Interest Entities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfVariableInterestEntities_lbl" xml:lang="en-US">Number of VIEs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:label="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xml:lang="en-US">Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xml:lang="en-US">Maximum exposure to loss</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_VariableInterestEntityEntityEstimatedFutureFundingCommitments" xlink:label="cli_VariableInterestEntityEntityEstimatedFutureFundingCommitments" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_VariableInterestEntityEntityEstimatedFutureFundingCommitments_lbl" xml:lang="en-US">Variable Interest Entity, Entity Estimated Future Funding Commitments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_VariableInterestEntityEntityEstimatedFutureFundingCommitments_lbl" xml:lang="en-US">Variable Interest Entity, Entity Estimated Future Funding Commitments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_VariableInterestEntityEntityEstimatedFutureFundingCommitments_lbl" xml:lang="en-US">Estimated future funding commitments</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationRentalPropertyNet" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationRentalPropertyNet" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationRentalPropertyNet_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Rental Property, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationRentalPropertyNet_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Rental Property, Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationRentalPropertyNet_lbl" xml:lang="en-US">Rental property, net</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationLoansReceivable" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationLoansReceivable" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationLoansReceivable_lbl" xml:lang="en-US">Equity Method Investment Summarized Financial Information Loans Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationLoansReceivable_lbl" xml:lang="en-US">Equity Method Investment Summarized Financial Information Loans Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationLoansReceivable_lbl" xml:lang="en-US">Loan receivable</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Other Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Other Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherAssets_lbl" xml:lang="en-US">Other assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_lbl" xml:lang="en-US">Total assets</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Secured Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt_lbl" xml:lang="en-US">Mortgages and loans payable</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities" xlink:to="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Other Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Other Liabilities</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities_lbl" xml:lang="en-US">Other liabilities</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital" xlink:to="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Equity or Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital_lbl" xml:lang="en-US">Partners'/members' capital</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity" xlink:to="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Liabilities and Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity_lbl" xml:lang="en-US">Total liabilities and partners'/members' capital</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PlazaEightAndNineAssociatesLLCMember" xlink:label="cli_PlazaEightAndNineAssociatesLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PlazaEightAndNineAssociatesLLCMember" xlink:to="cli_PlazaEightAndNineAssociatesLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PlazaEightAndNineAssociatesLLCMember_lbl" xml:lang="en-US">Plaza 8 &amp; 9 Associates, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PlazaEightAndNineAssociatesLLCMember_lbl" xml:lang="en-US">Plaza Eight And Nine Associates L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PlazaEightAndNineAssociatesLLCMember_lbl" xml:lang="en-US">Plaza VIII &amp; IX Associates, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SouthPierAtHarborsideMember" xlink:label="cli_SouthPierAtHarborsideMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SouthPierAtHarborsideMember" xlink:to="cli_SouthPierAtHarborsideMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SouthPierAtHarborsideMember_lbl" xml:lang="en-US">South Pier At Harborside [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SouthPierAtHarborsideMember_lbl" xml:lang="en-US">South Pier At Harborside [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SouthPierAtHarborsideMember_lbl" xml:lang="en-US">South Pier At Harborside [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RedBankCorporatePlazaLLCMember" xlink:label="cli_RedBankCorporatePlazaLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RedBankCorporatePlazaLLCMember" xlink:to="cli_RedBankCorporatePlazaLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RedBankCorporatePlazaLLCMember_lbl" xml:lang="en-US">Red Bank Corporate Plaza, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RedBankCorporatePlazaLLCMember_lbl" xml:lang="en-US">Red Bank Corporate Plaza L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RedBankCorporatePlazaLLCMember_lbl" xml:lang="en-US">Red Bank Corporate Plaza, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwelveVreelandAssociatesLLCMember" xlink:label="cli_TwelveVreelandAssociatesLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwelveVreelandAssociatesLLCMember" xlink:to="cli_TwelveVreelandAssociatesLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwelveVreelandAssociatesLLCMember_lbl" xml:lang="en-US">12 Vreeland Associates, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwelveVreelandAssociatesLLCMember_lbl" xml:lang="en-US">Twelve Vreeland Associates L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwelveVreelandAssociatesLLCMember_lbl" xml:lang="en-US">12 Vreeland Associates, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BostonDowntownCrossingMember" xlink:label="cli_BostonDowntownCrossingMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BostonDowntownCrossingMember" xlink:to="cli_BostonDowntownCrossingMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BostonDowntownCrossingMember_lbl" xml:lang="en-US">Boston Downtown Crossing [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BostonDowntownCrossingMember_lbl" xml:lang="en-US">Boston Downtown Crossing [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BostonDowntownCrossingMember_lbl" xml:lang="en-US">Boston-Downtown Crossing [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_GaleJeffersonLLCMember" xlink:label="cli_GaleJeffersonLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_GaleJeffersonLLCMember" xlink:to="cli_GaleJeffersonLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_GaleJeffersonLLCMember_lbl" xml:lang="en-US">Gale Jefferson, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_GaleJeffersonLLCMember_lbl" xml:lang="en-US">Gale Jefferson L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_GaleJeffersonLLCMember_lbl" xml:lang="en-US">Gale Jefferson, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_StamfordSmLlcMember" xlink:label="cli_StamfordSmLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_StamfordSmLlcMember" xlink:to="cli_StamfordSmLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_StamfordSmLlcMember_lbl" xml:lang="en-US">Stamford SM LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_StamfordSmLlcMember_lbl" xml:lang="en-US">Stamford Sm Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_StamfordSmLlcMember_lbl" xml:lang="en-US">Stamford SM LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MarbellaRoseGardenLLCMember" xlink:label="cli_MarbellaRoseGardenLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MarbellaRoseGardenLLCMember" xlink:to="cli_MarbellaRoseGardenLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MarbellaRoseGardenLLCMember_lbl" xml:lang="en-US">Marbella RoseGarden, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MarbellaRoseGardenLLCMember_lbl" xml:lang="en-US">Marbella Rose Garden L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MarbellaRoseGardenLLCMember_lbl" xml:lang="en-US">Marbella RoseGarden, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoseGardenMonacoHoldingsLLCMember" xlink:label="cli_RoseGardenMonacoHoldingsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoseGardenMonacoHoldingsLLCMember" xlink:to="cli_RoseGardenMonacoHoldingsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoseGardenMonacoHoldingsLLCMember_lbl" xml:lang="en-US">RoseGarden Monaco Holdings, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoseGardenMonacoHoldingsLLCMember_lbl" xml:lang="en-US">Rose Garden Monaco Holdings L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoseGardenMonacoHoldingsLLCMember_lbl" xml:lang="en-US">RoseGarden Monaco Holdings, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RosewoodLafayetteHoldingsLLCMember" xlink:label="cli_RosewoodLafayetteHoldingsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RosewoodLafayetteHoldingsLLCMember" xlink:to="cli_RosewoodLafayetteHoldingsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RosewoodLafayetteHoldingsLLCMember_lbl" xml:lang="en-US">Rosewood Lafayette Holdings, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RosewoodLafayetteHoldingsLLCMember_lbl" xml:lang="en-US">Rosewood Lafayette Holdings L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RosewoodLafayetteHoldingsLLCMember_lbl" xml:lang="en-US">Rosewood Lafayette Holdings, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PruRosePortImperialSouthFifteenLLCMember" xlink:label="cli_PruRosePortImperialSouthFifteenLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PruRosePortImperialSouthFifteenLLCMember" xlink:to="cli_PruRosePortImperialSouthFifteenLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PruRosePortImperialSouthFifteenLLCMember_lbl" xml:lang="en-US">PruRose Port Imperial South 15, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PruRosePortImperialSouthFifteenLLCMember_lbl" xml:lang="en-US">Pru Rose Port Imperial South Fifteen L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PruRosePortImperialSouthFifteenLLCMember_lbl" xml:lang="en-US">PruRose Port Imperial South 15, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RosewoodMorristownLLCMember" xlink:label="cli_RosewoodMorristownLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RosewoodMorristownLLCMember" xlink:to="cli_RosewoodMorristownLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RosewoodMorristownLLCMember_lbl" xml:lang="en-US">Rosewood Morristown, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RosewoodMorristownLLCMember_lbl" xml:lang="en-US">Rosewood Morristown L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RosewoodMorristownLLCMember_lbl" xml:lang="en-US">Rosewood Morristown, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeJVLLCMember" xlink:label="cli_OverlookRidgeJVLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeJVLLCMember" xlink:to="cli_OverlookRidgeJVLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeJVLLCMember_lbl" xml:lang="en-US">Overlook Ridge JV, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeJVLLCMember_lbl" xml:lang="en-US">Overlook Ridge J V L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeJVLLCMember_lbl" xml:lang="en-US">Overlook Ridge JV, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeJvTwoCAndThreeBLLCMember" xlink:label="cli_OverlookRidgeJvTwoCAndThreeBLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeJvTwoCAndThreeBLLCMember" xlink:to="cli_OverlookRidgeJvTwoCAndThreeBLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeJvTwoCAndThreeBLLCMember_lbl" xml:lang="en-US">Overlook Ridge JV 2C/3B, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeJvTwoCAndThreeBLLCMember_lbl" xml:lang="en-US">Overlook Ridge Jv Two C And Three B L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeJvTwoCAndThreeBLLCMember_lbl" xml:lang="en-US">Overlook Ridge JV 2C/3B, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoselandNorthRetailLLCMember" xlink:label="cli_RoselandNorthRetailLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoselandNorthRetailLLCMember" xlink:to="cli_RoselandNorthRetailLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoselandNorthRetailLLCMember_lbl" xml:lang="en-US">Roseland/North Retail, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoselandNorthRetailLLCMember_lbl" xml:lang="en-US">Roseland North Retail L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoselandNorthRetailLLCMember_lbl" xml:lang="en-US">Roseland/North Retail, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BNESAssociatesIIIMember" xlink:label="cli_BNESAssociatesIIIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BNESAssociatesIIIMember" xlink:to="cli_BNESAssociatesIIIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BNESAssociatesIIIMember_lbl" xml:lang="en-US">BNES Associates III [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BNESAssociatesIIIMember_lbl" xml:lang="en-US">B N E S Associates I I I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BNESAssociatesIIIMember_lbl" xml:lang="en-US">BNES Associates III [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortsideMasterCompanyLLCMember" xlink:label="cli_PortsideMasterCompanyLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortsideMasterCompanyLLCMember" xlink:to="cli_PortsideMasterCompanyLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortsideMasterCompanyLLCMember_lbl" xml:lang="en-US">Portside Master Company, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortsideMasterCompanyLLCMember_lbl" xml:lang="en-US">Portside Master Company L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortsideMasterCompanyLLCMember_lbl" xml:lang="en-US">Portside Master Company, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PruRosePortImperialSouthThirteenLLCMember" xlink:label="cli_PruRosePortImperialSouthThirteenLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PruRosePortImperialSouthThirteenLLCMember" xlink:to="cli_PruRosePortImperialSouthThirteenLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PruRosePortImperialSouthThirteenLLCMember_lbl" xml:lang="en-US">PruRose Port Imperial South 13, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PruRosePortImperialSouthThirteenLLCMember_lbl" xml:lang="en-US">Pru Rose Port Imperial South Thirteen L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PruRosePortImperialSouthThirteenLLCMember_lbl" xml:lang="en-US">PruRose Port Imperial South 13, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoselandPortImperialPartnersLPMember" xlink:label="cli_RoselandPortImperialPartnersLPMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoselandPortImperialPartnersLPMember" xlink:to="cli_RoselandPortImperialPartnersLPMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoselandPortImperialPartnersLPMember_lbl" xml:lang="en-US">Roseland/Port Imperial Partners, L.P. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoselandPortImperialPartnersLPMember_lbl" xml:lang="en-US">Roseland Port Imperial Partners L P [Member]</label>
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    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoseGardenMarbellaSouthLLCMember" xlink:label="cli_RoseGardenMarbellaSouthLLCMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoseGardenMarbellaSouthLLCMember_lbl" xml:lang="en-US">RoseGarden Marbella South, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoseGardenMarbellaSouthLLCMember_lbl" xml:lang="en-US">Rose Garden Marbella South L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoseGardenMarbellaSouthLLCMember_lbl" xml:lang="en-US">RoseGarden Marbella South, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PruRoseRiverwalkGLLCMember" xlink:label="cli_PruRoseRiverwalkGLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PruRoseRiverwalkGLLCMember" xlink:to="cli_PruRoseRiverwalkGLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PruRoseRiverwalkGLLCMember_lbl" xml:lang="en-US">PruRose Riverwalk G, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PruRoseRiverwalkGLLCMember_lbl" xml:lang="en-US">Pru Rose Riverwalk G L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PruRoseRiverwalkGLLCMember_lbl" xml:lang="en-US">PruRose Riverwalk G, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElmajoUrbanRenewalAssociatesLLCMember" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElmajoUrbanRenewalAssociatesLLCMember" xlink:to="cli_ElmajoUrbanRenewalAssociatesLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Elmajo Urban Renewal Associates, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Elmajo Urban Renewal Associates L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Elmajo Urban Renewal Associates, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EstuaryUrbanRenewalUnitBLLCMember" xlink:label="cli_EstuaryUrbanRenewalUnitBLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EstuaryUrbanRenewalUnitBLLCMember" xlink:to="cli_EstuaryUrbanRenewalUnitBLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EstuaryUrbanRenewalUnitBLLCMember_lbl" xml:lang="en-US">Estuary Urban Renewal Unit B, LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EstuaryUrbanRenewalUnitBLLCMember_lbl" xml:lang="en-US">Estuary Urban Renewal Unit B L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EstuaryUrbanRenewalUnitBLLCMember_lbl" xml:lang="en-US">Estuary Urban Renewal Unit B, LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RiverparkAtHarrisonILLCMember" xlink:label="cli_RiverparkAtHarrisonILLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RiverparkAtHarrisonILLCMember" xlink:to="cli_RiverparkAtHarrisonILLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RiverparkAtHarrisonILLCMember_lbl" xml:lang="en-US">Riverpark At Harrison I, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RiverparkAtHarrisonILLCMember_lbl" xml:lang="en-US">Riverpark At Harrison I L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RiverparkAtHarrisonILLCMember_lbl" xml:lang="en-US">RiverPark At Harrison I, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoseGardenMonacoLLCMember" xlink:label="cli_RoseGardenMonacoLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoseGardenMonacoLLCMember" xlink:to="cli_RoseGardenMonacoLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoseGardenMonacoLLCMember_lbl" xml:lang="en-US">RoseGarden Monaco, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoseGardenMonacoLLCMember_lbl" xml:lang="en-US">Rose Garden Monaco L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoseGardenMonacoLLCMember_lbl" xml:lang="en-US">RoseGarden Monaco, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HillsboroughTwoHundredSixHoldingsLLCMember" xlink:label="cli_HillsboroughTwoHundredSixHoldingsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HillsboroughTwoHundredSixHoldingsLLCMember" xlink:to="cli_HillsboroughTwoHundredSixHoldingsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HillsboroughTwoHundredSixHoldingsLLCMember_lbl" xml:lang="en-US">Hillsborough 206 Holdings, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HillsboroughTwoHundredSixHoldingsLLCMember_lbl" xml:lang="en-US">Hillsborough Two Hundred Six Holdings L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HillsboroughTwoHundredSixHoldingsLLCMember_lbl" xml:lang="en-US">Hillsborough 206 Holdings, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_GrandJerseyWaterfrontUrbanRenewalAssociatesLLCMember" xlink:label="cli_GrandJerseyWaterfrontUrbanRenewalAssociatesLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_GrandJerseyWaterfrontUrbanRenewalAssociatesLLCMember" xlink:to="cli_GrandJerseyWaterfrontUrbanRenewalAssociatesLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_GrandJerseyWaterfrontUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Grand Jersey Waterfront Urban Renewal Associates, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_GrandJerseyWaterfrontUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Grand Jersey Waterfront Urban Renewal Associates L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_GrandJerseyWaterfrontUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Grand Jersey Waterfront Urban Renewal Associates, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CrystalHouseApartmentsInvestorsLLCMember" xlink:label="cli_CrystalHouseApartmentsInvestorsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CrystalHouseApartmentsInvestorsLLCMember" xlink:to="cli_CrystalHouseApartmentsInvestorsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CrystalHouseApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">Crystal House Apartments Investors LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CrystalHouseApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">Crystal House Apartments Investors L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CrystalHouseApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">Crystal House Apartments Investors LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OtherJointVenturesMember" xlink:label="cli_OtherJointVenturesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OtherJointVenturesMember" xlink:to="cli_OtherJointVenturesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OtherJointVenturesMember_lbl" xml:lang="en-US">Other Joint Ventures [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OtherJointVenturesMember_lbl" xml:lang="en-US">Other Joint Ventures [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OtherJointVenturesMember_lbl" xml:lang="en-US">Other [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue" xlink:to="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Net Sales or Gross Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue_lbl" xml:lang="en-US">Total revenues</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOther" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOther" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOther" xlink:to="cli_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOther_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOther_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Operating and Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOther_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Operating and Other</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationOperatingAndOther_lbl" xml:lang="en-US">Operating and other expenses</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization" xlink:to="cli_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Depreciation and Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Depreciation and Amortization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization_lbl" xml:lang="en-US">Depreciation and amortization</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense" xlink:to="cli_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Interest Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Interest Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_EquityMethodInvestmentSummarizedFinancialInformationInterestExpense_lbl" xml:lang="en-US">Interest expense</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss" xlink:to="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss_lbl" xml:lang="en-US">Equity Method Investment, Summarized Financial Information, Net Income (Loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss_lbl" xml:lang="en-US">Net income (loss)</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US">Interest rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US">Interest rate of senior unsecured notes</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LoanCarryingAmount" xlink:label="cli_LoanCarryingAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LoanCarryingAmount" xlink:to="cli_LoanCarryingAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LoanCarryingAmount_lbl" xml:lang="en-US">Loan Carrying Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LoanCarryingAmount_lbl" xml:lang="en-US">Loan Carrying Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LoanCarryingAmount_lbl" xml:lang="en-US">Loan balance</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum_lbl" xml:lang="en-US">Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMinimum_lbl" xml:lang="en-US">Bears interest at fixed rate range, minimum</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum_lbl" xml:lang="en-US">Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentageRateRangeMaximum_lbl" xml:lang="en-US">Bears interest at fixed rate range, maximum</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="us-gaap_DebtInstrumentMaturityDate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US">Mortgage loan, maturity date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US">Maturity date of the senior unsecured notes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US">Loan maturity date</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LineOfCreditFacilityInSupportOfDebtInstrumentFairValueOfAmountOutstanding" xlink:label="cli_LineOfCreditFacilityInSupportOfDebtInstrumentFairValueOfAmountOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LineOfCreditFacilityInSupportOfDebtInstrumentFairValueOfAmountOutstanding" xlink:to="cli_LineOfCreditFacilityInSupportOfDebtInstrumentFairValueOfAmountOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LineOfCreditFacilityInSupportOfDebtInstrumentFairValueOfAmountOutstanding_lbl" xml:lang="en-US">Fair value of the amount outstanding under the credit facility.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LineOfCreditFacilityInSupportOfDebtInstrumentFairValueOfAmountOutstanding_lbl" xml:lang="en-US">Line Of Credit Facility In Support Of Debt Instrument Fair Value Of Amount Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LineOfCreditFacilityInSupportOfDebtInstrumentFairValueOfAmountOutstanding_lbl" xml:lang="en-US">Letter of credit</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LeaseExpirationDate1" xlink:label="us-gaap_LeaseExpirationDate1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseExpirationDate1" xlink:to="us-gaap_LeaseExpirationDate1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeaseExpirationDate1_lbl" xml:lang="en-US">Lease Expiration Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LeaseExpirationDate1_lbl" xml:lang="en-US">Operating leases with various expiration dates through year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LeaseExpirationDate1_lbl" xml:lang="en-US">Lease expiration date</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LIBORInterestRate" xlink:label="cli_LIBORInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LIBORInterestRate" xlink:to="cli_LIBORInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LIBORInterestRate_lbl" xml:lang="en-US">LIBOR Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LIBORInterestRate_lbl" xml:lang="en-US">L I B O R Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LIBORInterestRate_lbl" xml:lang="en-US">LIBOR interest rate</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtPercentageBearingFixedInterestRate" xlink:label="us-gaap_LongTermDebtPercentageBearingFixedInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtPercentageBearingFixedInterestRate" xlink:to="us-gaap_LongTermDebtPercentageBearingFixedInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtPercentageBearingFixedInterestRate_lbl" xml:lang="en-US">Long-term Debt, Percentage Bearing Fixed Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtPercentageBearingFixedInterestRate_lbl" xml:lang="en-US">Fixed interest rate</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NotionalAmountOfNonderivativeInstruments" xlink:label="us-gaap_NotionalAmountOfNonderivativeInstruments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotionalAmountOfNonderivativeInstruments" xlink:to="us-gaap_NotionalAmountOfNonderivativeInstruments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotionalAmountOfNonderivativeInstruments_lbl" xml:lang="en-US">Notional Amount of Nonderivative Instruments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NotionalAmountOfNonderivativeInstruments_lbl" xml:lang="en-US">Initial notional amount</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ManagementLeasingAndOtherServicesFees" xlink:label="cli_ManagementLeasingAndOtherServicesFees" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ManagementLeasingAndOtherServicesFees" xlink:to="cli_ManagementLeasingAndOtherServicesFees_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ManagementLeasingAndOtherServicesFees_lbl" xml:lang="en-US">Management Leasing And Other Services Fees.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ManagementLeasingAndOtherServicesFees_lbl" xml:lang="en-US">Management, leasing and other services fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ManagementLeasingAndOtherServicesFees_lbl" xml:lang="en-US">Management, leasing and other services fees</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DistributionOfLoanProceeds" xlink:label="cli_DistributionOfLoanProceeds" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DistributionOfLoanProceeds" xlink:to="cli_DistributionOfLoanProceeds_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DistributionOfLoanProceeds_lbl" xml:lang="en-US">Distribution Of Loan Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DistributionOfLoanProceeds_lbl" xml:lang="en-US">Distribution Of Loan Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DistributionOfLoanProceeds_lbl" xml:lang="en-US">Distribution of loan proceeds</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ShareOfDistributionOfLoanProceeds" xlink:label="cli_ShareOfDistributionOfLoanProceeds" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ShareOfDistributionOfLoanProceeds" xlink:to="cli_ShareOfDistributionOfLoanProceeds_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ShareOfDistributionOfLoanProceeds_lbl" xml:lang="en-US">Share Of Distribution Of Loan Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ShareOfDistributionOfLoanProceeds_lbl" xml:lang="en-US">Share Of Distribution Of Loan Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ShareOfDistributionOfLoanProceeds_lbl" xml:lang="en-US">Share of distribution of loan proceeds</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_VentureSaleOfRealEstate" xlink:label="cli_VentureSaleOfRealEstate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_VentureSaleOfRealEstate" xlink:to="cli_VentureSaleOfRealEstate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_VentureSaleOfRealEstate_lbl" xml:lang="en-US">Revenue recognized by the venture from the sale of property.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_VentureSaleOfRealEstate_lbl" xml:lang="en-US">Venture Sale Of Real Estate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_VentureSaleOfRealEstate_lbl" xml:lang="en-US">Venture sale of real estate</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ShareOfGainOnSaleOfRealEstate" xlink:label="cli_ShareOfGainOnSaleOfRealEstate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ShareOfGainOnSaleOfRealEstate" xlink:to="cli_ShareOfGainOnSaleOfRealEstate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ShareOfGainOnSaleOfRealEstate_lbl" xml:lang="en-US">Share Of Gain On Sale Of Real Estate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ShareOfGainOnSaleOfRealEstate_lbl" xml:lang="en-US">Share Of Gain On Sale Of Real Estate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ShareOfGainOnSaleOfRealEstate_lbl" xml:lang="en-US">Share of gain on sale of real estate</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneJeffersonMember" xlink:label="cli_OneJeffersonMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneJeffersonMember" xlink:to="cli_OneJeffersonMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneJeffersonMember_lbl" xml:lang="en-US">One Jefferson [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneJeffersonMember_lbl" xml:lang="en-US">One Jefferson [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneJeffersonMember_lbl" xml:lang="en-US">One Jefferson [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US">Debt Instrument [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="us-gaap_DebtInstrumentNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US">Debt Instrument Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US">Debt Instrument, Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MezzLoanMember" xlink:label="cli_MezzLoanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MezzLoanMember" xlink:to="cli_MezzLoanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MezzLoanMember_lbl" xml:lang="en-US">Mezz Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MezzLoanMember_lbl" xml:lang="en-US">Mezz Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MezzLoanMember_lbl" xml:lang="en-US">Mezz Loan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_StamfordSMLLCMember" xlink:label="cli_StamfordSMLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_StamfordSMLLCMember" xlink:to="cli_StamfordSMLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_StamfordSMLLCMember_lbl" xml:lang="en-US">Stamford SM LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_StamfordSMLLCMember_lbl" xml:lang="en-US">Stamford S M L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_StamfordSMLLCMember_lbl" xml:lang="en-US">Stamford SM LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstatePropertiesAxis" xlink:label="us-gaap_RealEstatePropertiesAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstatePropertiesAxis" xlink:to="us-gaap_RealEstatePropertiesAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstatePropertiesAxis_lbl" xml:lang="en-US">Real Estate Property Ownership [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstatePropertiesDomain" xlink:label="us-gaap_RealEstatePropertiesDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstatePropertiesDomain" xlink:to="us-gaap_RealEstatePropertiesDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstatePropertiesDomain_lbl" xml:lang="en-US">Real Estate Properties [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstatePropertiesDomain_lbl" xml:lang="en-US">Real Estate Properties [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ClassPortfolioInStamfordConnecticutMember" xlink:label="cli_ClassPortfolioInStamfordConnecticutMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ClassPortfolioInStamfordConnecticutMember" xlink:to="cli_ClassPortfolioInStamfordConnecticutMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ClassPortfolioInStamfordConnecticutMember_lbl" xml:lang="en-US">Class A portfolio In Stamford, Connecticut [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ClassPortfolioInStamfordConnecticutMember_lbl" xml:lang="en-US">Class Portfolio In Stamford Connecticut [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ClassPortfolioInStamfordConnecticutMember_lbl" xml:lang="en-US">Class A Portfolio In Stamford, Connecticut [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ClassOfficeSpaceMember" xlink:label="cli_ClassOfficeSpaceMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ClassOfficeSpaceMember" xlink:to="cli_ClassOfficeSpaceMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ClassOfficeSpaceMember_lbl" xml:lang="en-US">Class A Office Space [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ClassOfficeSpaceMember_lbl" xml:lang="en-US">Class Office Space [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ClassOfficeSpaceMember_lbl" xml:lang="en-US">Class A Office Space [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ResidentialSpaceMember" xlink:label="cli_ResidentialSpaceMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ResidentialSpaceMember" xlink:to="cli_ResidentialSpaceMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ResidentialSpaceMember_lbl" xml:lang="en-US">Residential Space [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ResidentialSpaceMember_lbl" xml:lang="en-US">Residential Space [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ResidentialSpaceMember_lbl" xml:lang="en-US">Residential Space [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_VenturePropertyAcquisitionCost" xlink:label="cli_VenturePropertyAcquisitionCost" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_VenturePropertyAcquisitionCost" xlink:to="cli_VenturePropertyAcquisitionCost_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_VenturePropertyAcquisitionCost_lbl" xml:lang="en-US">Cost of property acquired by the venture.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_VenturePropertyAcquisitionCost_lbl" xml:lang="en-US">Venture property acquisition cost</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:label="us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages" xlink:to="us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" xml:lang="en-US">Mortgage Loans on Real Estate, Face Amount of Mortgages</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" xml:lang="en-US">Mortgage loan face amount</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfPropertiesUsedToCollateralizeMortgage" xlink:label="cli_NumberOfPropertiesUsedToCollateralizeMortgage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfPropertiesUsedToCollateralizeMortgage" xlink:to="cli_NumberOfPropertiesUsedToCollateralizeMortgage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfPropertiesUsedToCollateralizeMortgage_lbl" xml:lang="en-US">Number Of Properties Used To Collateralize Mortgage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfPropertiesUsedToCollateralizeMortgage_lbl" xml:lang="en-US">Number Of Properties Used To Collateralize Mortgage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfPropertiesUsedToCollateralizeMortgage_lbl" xml:lang="en-US">Number of properties used to collateralized mortgage</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfWhichExcessProceedsArePaidToThirdParty" xlink:label="cli_ThresholdOfWhichExcessProceedsArePaidToThirdParty" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfWhichExcessProceedsArePaidToThirdParty" xlink:to="cli_ThresholdOfWhichExcessProceedsArePaidToThirdParty_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfWhichExcessProceedsArePaidToThirdParty_lbl" xml:lang="en-US">Threshold Of Which Excess Proceeds Are Paid To Third Party</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfWhichExcessProceedsArePaidToThirdParty_lbl" xml:lang="en-US">Threshold Of Which Excess Proceeds Are Paid To Third Party</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfWhichExcessProceedsArePaidToThirdParty_lbl" xml:lang="en-US">Threshold of which excess proceeds are paid to another party</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoanOnRealEstateFinalMaturityDate" xlink:label="us-gaap_MortgageLoanOnRealEstateFinalMaturityDate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoanOnRealEstateFinalMaturityDate" xlink:to="us-gaap_MortgageLoanOnRealEstateFinalMaturityDate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoanOnRealEstateFinalMaturityDate_lbl" xml:lang="en-US">Mortgage Loans on Real Estate, Final Maturity Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_MortgageLoanOnRealEstateFinalMaturityDate_lbl" xml:lang="en-US">Mortgage loan scheduled to mature</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HoldingAndDistributionPatternUnderOperatingAgreement" xlink:label="cli_HoldingAndDistributionPatternUnderOperatingAgreement" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HoldingAndDistributionPatternUnderOperatingAgreement" xlink:to="cli_HoldingAndDistributionPatternUnderOperatingAgreement_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HoldingAndDistributionPatternUnderOperatingAgreement_lbl" xml:lang="en-US">Holding and distribution pattern under operating agreement</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HoldingAndDistributionPatternUnderOperatingAgreement_lbl" xml:lang="en-US">Holding and distribution pattern under operating agreement</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InvestmentsInUnconsolidatedJointVentuesByNameAxis" xlink:to="cli_InvestmentsInUnconsolidatedJointVentuesByNameAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InvestmentsInUnconsolidatedJointVentuesByNameAxis_lbl" xml:lang="en-US">Investments In Unconsolidated Joint Ventues By Name [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InvestmentsInUnconsolidatedJointVentuesByNameAxis_lbl" xml:lang="en-US">Investments In Unconsolidated Joint Ventues By Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InvestmentsInUnconsolidatedJointVentuesByNameDomain" xlink:label="cli_InvestmentsInUnconsolidatedJointVentuesByNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InvestmentsInUnconsolidatedJointVentuesByNameDomain" xlink:to="cli_InvestmentsInUnconsolidatedJointVentuesByNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InvestmentsInUnconsolidatedJointVentuesByNameDomain_lbl" xml:lang="en-US">Investments In Unconsolidated Joint Ventues By Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InvestmentsInUnconsolidatedJointVentuesByNameDomain_lbl" xml:lang="en-US">Investments In Unconsolidated Joint Ventues By Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InvestmentsInUnconsolidatedJointVentuesByNameDomain_lbl" xml:lang="en-US">Investments In Unconsolidated Joint Ventues By Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MarbellaRoseGardenSInterestInPruRoseMarbellaIMember" xlink:label="cli_MarbellaRoseGardenSInterestInPruRoseMarbellaIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MarbellaRoseGardenSInterestInPruRoseMarbellaIMember" xlink:to="cli_MarbellaRoseGardenSInterestInPruRoseMarbellaIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MarbellaRoseGardenSInterestInPruRoseMarbellaIMember_lbl" xml:lang="en-US">Marbella RoseGarden's Interest In PruRose/Marbella I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MarbellaRoseGardenSInterestInPruRoseMarbellaIMember_lbl" xml:lang="en-US">Marbella Rose Garden S Interest In Pru Rose Marbella I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MarbellaRoseGardenSInterestInPruRoseMarbellaIMember_lbl" xml:lang="en-US">Marbella RoseGarden's Interest In PruRose/Marbella I [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrudentialMarbellaPartnershipMember" xlink:label="cli_PrudentialMarbellaPartnershipMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrudentialMarbellaPartnershipMember" xlink:to="cli_PrudentialMarbellaPartnershipMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrudentialMarbellaPartnershipMember_lbl" xml:lang="en-US">Prudential-Marbella Partnership [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrudentialMarbellaPartnershipMember_lbl" xml:lang="en-US">Prudential Marbella Partnership [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrudentialMarbellaPartnershipMember_lbl" xml:lang="en-US">Prudential-Marbella Partnership [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PruRoseMarbellaILLCMember" xlink:label="cli_PruRoseMarbellaILLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PruRoseMarbellaILLCMember" xlink:to="cli_PruRoseMarbellaILLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PruRoseMarbellaILLCMember_lbl" xml:lang="en-US">PruRose Marbella I, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PruRoseMarbellaILLCMember_lbl" xml:lang="en-US">Pru Rose Marbella I L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PruRoseMarbellaILLCMember_lbl" xml:lang="en-US">PruRose/Marbella I, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_IndirectResidualOwnershipPercentage" xlink:label="cli_IndirectResidualOwnershipPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_IndirectResidualOwnershipPercentage" xlink:to="cli_IndirectResidualOwnershipPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_IndirectResidualOwnershipPercentage_lbl" xml:lang="en-US">Indirect Residual Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_IndirectResidualOwnershipPercentage_lbl" xml:lang="en-US">Indirect Residual Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_IndirectResidualOwnershipPercentage_lbl" xml:lang="en-US">Indirect residual ownership percentage</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfStoriesInRealEstateProperty" xlink:label="cli_NumberOfStoriesInRealEstateProperty" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfStoriesInRealEstateProperty" xlink:to="cli_NumberOfStoriesInRealEstateProperty_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfStoriesInRealEstateProperty_lbl" xml:lang="en-US">Number Of Stories In Real Estate Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfStoriesInRealEstateProperty_lbl" xml:lang="en-US">Number Of Stories In Real Estate Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfStoriesInRealEstateProperty_lbl" xml:lang="en-US">Number of stories</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InvestmentOwnershipPercentage" xlink:label="cli_InvestmentOwnershipPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InvestmentOwnershipPercentage" xlink:to="cli_InvestmentOwnershipPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InvestmentOwnershipPercentage_lbl" xml:lang="en-US">Investment Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InvestmentOwnershipPercentage_lbl" xml:lang="en-US">Investment Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InvestmentOwnershipPercentage_lbl" xml:lang="en-US">Investment ownership percentage</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfOperatingReturnOnCapital" xlink:label="cli_PercentageOfOperatingReturnOnCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfOperatingReturnOnCapital" xlink:to="cli_PercentageOfOperatingReturnOnCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfOperatingReturnOnCapital_lbl" xml:lang="en-US">Percentage Of Operating Return On Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfOperatingReturnOnCapital_lbl" xml:lang="en-US">Percentage Of Operating Return On Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfOperatingReturnOnCapital_lbl" xml:lang="en-US">Percentage of operating return on capital</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AccumulatedUnpaidOperatingReturn" xlink:label="cli_AccumulatedUnpaidOperatingReturn" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AccumulatedUnpaidOperatingReturn" xlink:to="cli_AccumulatedUnpaidOperatingReturn_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AccumulatedUnpaidOperatingReturn_lbl" xml:lang="en-US">Accumulated Unpaid Operating Return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AccumulatedUnpaidOperatingReturn_lbl" xml:lang="en-US">Accumulated Unpaid Operating Return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AccumulatedUnpaidOperatingReturn_lbl" xml:lang="en-US">Accumulated unpaid operating return</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoseGardenMonacoHoldingsInterestInMonacoHoldingsMember" xlink:label="cli_RoseGardenMonacoHoldingsInterestInMonacoHoldingsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoseGardenMonacoHoldingsInterestInMonacoHoldingsMember" xlink:to="cli_RoseGardenMonacoHoldingsInterestInMonacoHoldingsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoseGardenMonacoHoldingsInterestInMonacoHoldingsMember_lbl" xml:lang="en-US">Rose Garden Monaco Holdings' Interest In Monaco Holdings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoseGardenMonacoHoldingsInterestInMonacoHoldingsMember_lbl" xml:lang="en-US">Rose Garden Monaco Holdings Interest In Monaco Holdings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoseGardenMonacoHoldingsInterestInMonacoHoldingsMember_lbl" xml:lang="en-US">RoseGarden Monaco Holdings' Interest In Monaco Holdings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MonacoHoldingsInterestInPruRoseMonacoHoldingsMember" xlink:label="cli_MonacoHoldingsInterestInPruRoseMonacoHoldingsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MonacoHoldingsInterestInPruRoseMonacoHoldingsMember" xlink:to="cli_MonacoHoldingsInterestInPruRoseMonacoHoldingsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MonacoHoldingsInterestInPruRoseMonacoHoldingsMember_lbl" xml:lang="en-US">Monaco Holdings' Interest In PruRose Monaco Holdings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MonacoHoldingsInterestInPruRoseMonacoHoldingsMember_lbl" xml:lang="en-US">Monaco Holdings Interest In Pru Rose Monaco Holdings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MonacoHoldingsInterestInPruRoseMonacoHoldingsMember_lbl" xml:lang="en-US">Monaco Holdings' Interest In PruRose Monaco Holdings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PruRoseMonacoHoldingsLLCMember" xlink:label="cli_PruRoseMonacoHoldingsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PruRoseMonacoHoldingsLLCMember" xlink:to="cli_PruRoseMonacoHoldingsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PruRoseMonacoHoldingsLLCMember_lbl" xml:lang="en-US">PruRose Monaco Holdings, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PruRoseMonacoHoldingsLLCMember_lbl" xml:lang="en-US">Pru Rose Monaco Holdings L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PruRoseMonacoHoldingsLLCMember_lbl" xml:lang="en-US">PruRose Monaco Holdings, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrudentialInsuranceCompanyOfAmericaMember" xlink:label="cli_PrudentialInsuranceCompanyOfAmericaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrudentialInsuranceCompanyOfAmericaMember" xlink:to="cli_PrudentialInsuranceCompanyOfAmericaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrudentialInsuranceCompanyOfAmericaMember_lbl" xml:lang="en-US">Prudential Insurance Company Of America [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrudentialInsuranceCompanyOfAmericaMember_lbl" xml:lang="en-US">Prudential Insurance Company Of America [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrudentialInsuranceCompanyOfAmericaMember_lbl" xml:lang="en-US">Prudential Insurance Company Of America [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MonacoHoldingsLLCMember" xlink:label="cli_MonacoHoldingsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MonacoHoldingsLLCMember" xlink:to="cli_MonacoHoldingsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MonacoHoldingsLLCMember_lbl" xml:lang="en-US">Monaco Holdings, L.L.C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MonacoHoldingsLLCMember_lbl" xml:lang="en-US">Monaco Holdings L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MonacoHoldingsLLCMember_lbl" xml:lang="en-US">Monaco Holdings, L.L.C [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RosewoodLafayatteHoldingsInterestInRosewoodLafayetteCommonsMember" xlink:label="cli_RosewoodLafayatteHoldingsInterestInRosewoodLafayetteCommonsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RosewoodLafayatteHoldingsInterestInRosewoodLafayetteCommonsMember" xlink:to="cli_RosewoodLafayatteHoldingsInterestInRosewoodLafayetteCommonsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RosewoodLafayatteHoldingsInterestInRosewoodLafayetteCommonsMember_lbl" xml:lang="en-US">Rosewood Lafayatte Holdings' Interest In Rosewood Lafayette Commons [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RosewoodLafayatteHoldingsInterestInRosewoodLafayetteCommonsMember_lbl" xml:lang="en-US">Rosewood Lafayatte Holdings Interest In Rosewood Lafayette Commons [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RosewoodLafayatteHoldingsInterestInRosewoodLafayetteCommonsMember_lbl" xml:lang="en-US">Rosewood Lafayatte Holdings' Interest In Rosewood Lafayette Commons [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RosewoodLafayetteCommonsLLCMember" xlink:label="cli_RosewoodLafayetteCommonsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RosewoodLafayetteCommonsLLCMember" xlink:to="cli_RosewoodLafayetteCommonsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RosewoodLafayetteCommonsLLCMember_lbl" xml:lang="en-US">Rosewood Lafayette Commons, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RosewoodLafayetteCommonsLLCMember_lbl" xml:lang="en-US">Rosewood Lafayette Commons L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RosewoodLafayetteCommonsLLCMember_lbl" xml:lang="en-US">Rosewood Lafayette Commons, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrudentialMember" xlink:label="cli_PrudentialMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrudentialMember" xlink:to="cli_PrudentialMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrudentialMember_lbl" xml:lang="en-US">Prudential [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrudentialMember_lbl" xml:lang="en-US">Prudential [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrudentialMember_lbl" xml:lang="en-US">Prudential [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgageLoansAmortizationPeriod" xlink:label="cli_MortgageLoansAmortizationPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgageLoansAmortizationPeriod" xlink:to="cli_MortgageLoansAmortizationPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgageLoansAmortizationPeriod_lbl" xml:lang="en-US">Mortgage Loans, Amortization Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgageLoansAmortizationPeriod_lbl" xml:lang="en-US">Mortgage Loans, Amortization Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgageLoansAmortizationPeriod_lbl" xml:lang="en-US">Amortization schedule</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RefinanceLoanMember" xlink:label="cli_RefinanceLoanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RefinanceLoanMember" xlink:to="cli_RefinanceLoanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RefinanceLoanMember_lbl" xml:lang="en-US">Refinance Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RefinanceLoanMember_lbl" xml:lang="en-US">Refinance Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RefinanceLoanMember_lbl" xml:lang="en-US">Refinance Loan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrudentialPortMember" xlink:label="cli_PrudentialPortMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrudentialPortMember" xlink:to="cli_PrudentialPortMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrudentialPortMember_lbl" xml:lang="en-US">Prudential-Port [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrudentialPortMember_lbl" xml:lang="en-US">Prudential Port [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrudentialPortMember_lbl" xml:lang="en-US">Prudential-Port [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentOfDistributionsPaidToThirdPartyAfterThresholdReached" xlink:label="cli_PercentOfDistributionsPaidToThirdPartyAfterThresholdReached" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentOfDistributionsPaidToThirdPartyAfterThresholdReached" xlink:to="cli_PercentOfDistributionsPaidToThirdPartyAfterThresholdReached_lbl" />
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FortyParkCondominiumPropertyMember" xlink:to="cli_FortyParkCondominiumPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FortyParkCondominiumPropertyMember_lbl" xml:lang="en-US">40 Park Condominium Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FortyParkCondominiumPropertyMember_lbl" xml:lang="en-US">Forty Park Condominium Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FortyParkCondominiumPropertyMember_lbl" xml:lang="en-US">40 Park Condominium Property [Member]</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LoftsAtFortyParkPropertyMember" xlink:to="cli_LoftsAtFortyParkPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LoftsAtFortyParkPropertyMember_lbl" xml:lang="en-US">Lofts At 40 Park Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LoftsAtFortyParkPropertyMember_lbl" xml:lang="en-US">Lofts At Forty Park Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LoftsAtFortyParkPropertyMember_lbl" xml:lang="en-US">Lofts At 40 Park Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MetropolitanPropertyMember" xlink:label="cli_MetropolitanPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MetropolitanPropertyMember" xlink:to="cli_MetropolitanPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MetropolitanPropertyMember_lbl" xml:lang="en-US">Metropolitan Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MetropolitanPropertyMember_lbl" xml:lang="en-US">Metropolitan Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MetropolitanPropertyMember_lbl" xml:lang="en-US">Metropolitan Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ShopsAtFortyParkPropertyMember" xlink:label="cli_ShopsAtFortyParkPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ShopsAtFortyParkPropertyMember" xlink:to="cli_ShopsAtFortyParkPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ShopsAtFortyParkPropertyMember_lbl" xml:lang="en-US">The Shops At Forty Park Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ShopsAtFortyParkPropertyMember_lbl" xml:lang="en-US">Shops At Forty Park Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ShopsAtFortyParkPropertyMember_lbl" xml:lang="en-US">The Shops At 40 Park Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RosewoodMorristownSInterestInMorristownEpsteinsMember" xlink:label="cli_RosewoodMorristownSInterestInMorristownEpsteinsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RosewoodMorristownSInterestInMorristownEpsteinsMember" xlink:to="cli_RosewoodMorristownSInterestInMorristownEpsteinsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RosewoodMorristownSInterestInMorristownEpsteinsMember_lbl" xml:lang="en-US">Rosewood Morristown's Interest In Morristown Epsteins [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RosewoodMorristownSInterestInMorristownEpsteinsMember_lbl" xml:lang="en-US">Rosewood Morristown S Interest In Morristown Epsteins [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RosewoodMorristownSInterestInMorristownEpsteinsMember_lbl" xml:lang="en-US">Rosewood Morristown's Interest In Morristown Epsteins [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MorristownEpsteinsLLCMember" xlink:label="cli_MorristownEpsteinsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MorristownEpsteinsLLCMember" xlink:to="cli_MorristownEpsteinsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MorristownEpsteinsLLCMember_lbl" xml:lang="en-US">Morristown Epsteins, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MorristownEpsteinsLLCMember_lbl" xml:lang="en-US">Morristown Epsteins L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MorristownEpsteinsLLCMember_lbl" xml:lang="en-US">Morristown Epsteins, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrIIMorristownPrudentialLLCMember" xlink:label="cli_PrIIMorristownPrudentialLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrIIMorristownPrudentialLLCMember" xlink:to="cli_PrIIMorristownPrudentialLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrIIMorristownPrudentialLLCMember_lbl" xml:lang="en-US">PR II/Morristown Prudential, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrIIMorristownPrudentialLLCMember_lbl" xml:lang="en-US">Pr I I Morristown Prudential L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrIIMorristownPrudentialLLCMember_lbl" xml:lang="en-US">PR II/Morristown Prudential, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EpsteinsBRentalsLLCMember" xlink:label="cli_EpsteinsBRentalsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EpsteinsBRentalsLLCMember" xlink:to="cli_EpsteinsBRentalsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EpsteinsBRentalsLLCMember_lbl" xml:lang="en-US">Epsteins B Rentals, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EpsteinsBRentalsLLCMember_lbl" xml:lang="en-US">Epsteins B Rentals L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EpsteinsBRentalsLLCMember_lbl" xml:lang="en-US">Epsteins B Rentals, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfUnsoldUnits" xlink:label="cli_NumberOfUnsoldUnits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfUnsoldUnits" xlink:to="cli_NumberOfUnsoldUnits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfUnsoldUnits_lbl" xml:lang="en-US">Number Of Unsold Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfUnsoldUnits_lbl" xml:lang="en-US">Number Of Unsold Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfUnsoldUnits_lbl" xml:lang="en-US">Number of unsold units</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PreferredRateOfReturn" xlink:label="cli_PreferredRateOfReturn" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PreferredRateOfReturn" xlink:to="cli_PreferredRateOfReturn_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PreferredRateOfReturn_lbl" xml:lang="en-US">Preferred Rate Of Return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PreferredRateOfReturn_lbl" xml:lang="en-US">Preferred Rate Of Return</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PreferredRateOfReturn_lbl" xml:lang="en-US">Preferred rate of return</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NotesPayable" xlink:label="us-gaap_NotesPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NotesPayable" xlink:to="us-gaap_NotesPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NotesPayable_lbl" xml:lang="en-US">Notes Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NotesPayable_lbl" xml:lang="en-US">Note payable</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AdjustedPartnersCapital" xlink:label="cli_AdjustedPartnersCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AdjustedPartnersCapital" xlink:to="cli_AdjustedPartnersCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AdjustedPartnersCapital_lbl" xml:lang="en-US">Adjusted Partners Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AdjustedPartnersCapital_lbl" xml:lang="en-US">Adjusted Partners Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AdjustedPartnersCapital_lbl" xml:lang="en-US">Adjusted capital balance</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InterestInNetSalesProceeds" xlink:label="cli_InterestInNetSalesProceeds" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InterestInNetSalesProceeds" xlink:to="cli_InterestInNetSalesProceeds_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InterestInNetSalesProceeds_lbl" xml:lang="en-US">Interest In Net Sales Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InterestInNetSalesProceeds_lbl" xml:lang="en-US">Interest In Net Sales Proceeds</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InterestInNetSalesProceeds_lbl" xml:lang="en-US">Interest in net sales proceeds</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgageLoanOnRealEstateAdditionalBorrowingCapacity" xlink:label="cli_MortgageLoanOnRealEstateAdditionalBorrowingCapacity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgageLoanOnRealEstateAdditionalBorrowingCapacity" xlink:to="cli_MortgageLoanOnRealEstateAdditionalBorrowingCapacity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgageLoanOnRealEstateAdditionalBorrowingCapacity_lbl" xml:lang="en-US">Mortgage Loan On Real Estate, Additional Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgageLoanOnRealEstateAdditionalBorrowingCapacity_lbl" xml:lang="en-US">Mortgage Loan On Real Estate, Additional Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgageLoanOnRealEstateAdditionalBorrowingCapacity_lbl" xml:lang="en-US">Additional borrowing capacity</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="us-gaap_LetterOfCreditMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LetterOfCreditMember" xlink:to="us-gaap_LetterOfCreditMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LetterOfCreditMember_lbl" xml:lang="en-US">Letter Of Credit [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LetterOfCreditMember_lbl" xml:lang="en-US">Letter of Credit [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SeniorLoansMember" xlink:label="us-gaap_SeniorLoansMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeniorLoansMember" xlink:to="us-gaap_SeniorLoansMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeniorLoansMember_lbl" xml:lang="en-US">Senior Loans [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SeniorLoansMember_lbl" xml:lang="en-US">Senior Loans [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_JuniorLoansMember" xlink:label="us-gaap_JuniorLoansMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_JuniorLoansMember" xlink:to="us-gaap_JuniorLoansMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_JuniorLoansMember_lbl" xml:lang="en-US">Junior Loans [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_JuniorLoansMember_lbl" xml:lang="en-US">Junior Loans [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_QuarrystoneIPropertyMember" xlink:label="cli_QuarrystoneIPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_QuarrystoneIPropertyMember" xlink:to="cli_QuarrystoneIPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_QuarrystoneIPropertyMember_lbl" xml:lang="en-US">Quarrystone I Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_QuarrystoneIPropertyMember_lbl" xml:lang="en-US">Quarrystone I Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_QuarrystoneIPropertyMember_lbl" xml:lang="en-US">Quarrystone I Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookPhaseIIIMember" xlink:label="cli_OverlookPhaseIIIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookPhaseIIIMember" xlink:to="cli_OverlookPhaseIIIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookPhaseIIIMember_lbl" xml:lang="en-US">Overlook Phase III [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookPhaseIIIMember_lbl" xml:lang="en-US">Overlook Phase I I I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookPhaseIIIMember_lbl" xml:lang="en-US">Overlook Phase III [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeJVsInterestInLRJVCAssociatesMember" xlink:label="cli_OverlookRidgeJVsInterestInLRJVCAssociatesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeJVsInterestInLRJVCAssociatesMember" xlink:to="cli_OverlookRidgeJVsInterestInLRJVCAssociatesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeJVsInterestInLRJVCAssociatesMember_lbl" xml:lang="en-US">Overlook Ridge JV's Interest In LR JV-C Associates [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeJVsInterestInLRJVCAssociatesMember_lbl" xml:lang="en-US">Overlook Ridge J Vs Interest In L R J V C Associates [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeJVsInterestInLRJVCAssociatesMember_lbl" xml:lang="en-US">Overlook Ridge JV's Interest In LR JV-C Associates [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeJVsInterestInLROverlookPhaseIIIMember" xlink:label="cli_OverlookRidgeJVsInterestInLROverlookPhaseIIIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeJVsInterestInLROverlookPhaseIIIMember" xlink:to="cli_OverlookRidgeJVsInterestInLROverlookPhaseIIIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeJVsInterestInLROverlookPhaseIIIMember_lbl" xml:lang="en-US">Overlook Ridge JV's Interest In LR Overlook Phase III [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeJVsInterestInLROverlookPhaseIIIMember_lbl" xml:lang="en-US">Overlook Ridge J Vs Interest In L R Overlook Phase I I I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeJVsInterestInLROverlookPhaseIIIMember_lbl" xml:lang="en-US">Overlook Ridge JV's Interest In LR Overlook Phase III [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LennarMassachusettsPropertiesMember" xlink:label="cli_LennarMassachusettsPropertiesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LennarMassachusettsPropertiesMember" xlink:to="cli_LennarMassachusettsPropertiesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LennarMassachusettsPropertiesMember_lbl" xml:lang="en-US">Lennar Massachusetts Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LennarMassachusettsPropertiesMember_lbl" xml:lang="en-US">Lennar Massachusetts Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LennarMassachusettsPropertiesMember_lbl" xml:lang="en-US">Lennar Massachusetts Properties [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LRJVCAssociatesLLCMember" xlink:label="cli_LRJVCAssociatesLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LRJVCAssociatesLLCMember" xlink:to="cli_LRJVCAssociatesLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LRJVCAssociatesLLCMember_lbl" xml:lang="en-US">LR JV-C Associates, L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LRJVCAssociatesLLCMember_lbl" xml:lang="en-US">L R J V C Associates L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LRJVCAssociatesLLCMember_lbl" xml:lang="en-US">LR JV-C Associates, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LROverlookPhaseIIILLCMember" xlink:label="cli_LROverlookPhaseIIILLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LROverlookPhaseIIILLCMember" xlink:to="cli_LROverlookPhaseIIILLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LROverlookPhaseIIILLCMember_lbl" xml:lang="en-US">LR Overlook Phase III, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LROverlookPhaseIIILLCMember_lbl" xml:lang="en-US">L R Overlook Phase I I I L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LROverlookPhaseIIILLCMember_lbl" xml:lang="en-US">LR Overlook Phase III, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LoansPayable" xlink:label="us-gaap_LoansPayable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LoansPayable" xlink:to="us-gaap_LoansPayable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LoansPayable_lbl" xml:lang="en-US">Loans Payable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LoansPayable_lbl" xml:lang="en-US">Priority partnership loan</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AmountOfDebtGuaranteedByCompany" xlink:label="cli_AmountOfDebtGuaranteedByCompany" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AmountOfDebtGuaranteedByCompany" xlink:to="cli_AmountOfDebtGuaranteedByCompany_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AmountOfDebtGuaranteedByCompany_lbl" xml:lang="en-US">Amount Of Debt Guaranteed By Company</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AmountOfDebtGuaranteedByCompany_lbl" xml:lang="en-US">Amount Of Debt Guaranteed By Company</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AmountOfDebtGuaranteedByCompany_lbl" xml:lang="en-US">Amount of debt guaranteed by company</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeLLCMember" xlink:label="cli_OverlookRidgeLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeLLCMember" xlink:to="cli_OverlookRidgeLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeLLCMember_lbl" xml:lang="en-US">Overlook Ridge, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeLLCMember_lbl" xml:lang="en-US">Overlook Ridge L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeLLCMember_lbl" xml:lang="en-US">Overlook Ridge, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoweMember" xlink:label="cli_RoweMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoweMember" xlink:to="cli_RoweMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoweMember_lbl" xml:lang="en-US">Rowe [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoweMember_lbl" xml:lang="en-US">Rowe [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoweMember_lbl" xml:lang="en-US">Rowe [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NotionalLandCapital" xlink:label="cli_NotionalLandCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NotionalLandCapital" xlink:to="cli_NotionalLandCapital_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NotionalLandCapital_lbl" xml:lang="en-US">Notional Land Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NotionalLandCapital_lbl" xml:lang="en-US">Notional Land Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NotionalLandCapital_lbl" xml:lang="en-US">Notional land capital</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfNotionalLandCapitalAccount" xlink:label="cli_PercentageOfNotionalLandCapitalAccount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfNotionalLandCapitalAccount" xlink:to="cli_PercentageOfNotionalLandCapitalAccount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfNotionalLandCapitalAccount_lbl" xml:lang="en-US">Percentage Of Notional Land Capital Account</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfNotionalLandCapitalAccount_lbl" xml:lang="en-US">Percentage Of Notional Land Capital Account</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfNotionalLandCapitalAccount_lbl" xml:lang="en-US">Percentage of notional land capital account assigned</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstate" xlink:label="us-gaap_MortgageLoansOnRealEstate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstate" xlink:to="us-gaap_MortgageLoansOnRealEstate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstate_lbl" xml:lang="en-US">Mortgage Loans on Real Estate</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ConstructionLoanExtensionNumberOneMember" xlink:label="cli_ConstructionLoanExtensionNumberOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ConstructionLoanExtensionNumberOneMember" xlink:to="cli_ConstructionLoanExtensionNumberOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ConstructionLoanExtensionNumberOneMember_lbl" xml:lang="en-US">Construction Loan Extension Number 1 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ConstructionLoanExtensionNumberOneMember_lbl" xml:lang="en-US">Construction Loan Extension Number One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ConstructionLoanExtensionNumberOneMember_lbl" xml:lang="en-US">Construction Loan Extension Number 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ConstructionLoanExtensionNumberTwoMember" xlink:label="cli_ConstructionLoanExtensionNumberTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ConstructionLoanExtensionNumberTwoMember" xlink:to="cli_ConstructionLoanExtensionNumberTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ConstructionLoanExtensionNumberTwoMember_lbl" xml:lang="en-US">Construction Loan Extension Number 2 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ConstructionLoanExtensionNumberTwoMember_lbl" xml:lang="en-US">Construction Loan Extension Number Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ConstructionLoanExtensionNumberTwoMember_lbl" xml:lang="en-US">Construction Loan Extension Number 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookTwoCThreeBProjectMember" xlink:label="cli_OverlookTwoCThreeBProjectMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookTwoCThreeBProjectMember" xlink:to="cli_OverlookTwoCThreeBProjectMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookTwoCThreeBProjectMember_lbl" xml:lang="en-US">Overlook 2C 3B Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookTwoCThreeBProjectMember_lbl" xml:lang="en-US">Overlook Two C Three B Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookTwoCThreeBProjectMember_lbl" xml:lang="en-US">Overlook 2C 3B Project [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeTwoCThreeBsInterestInOverlookRidgeApartmentsInvestorsMember" xlink:label="cli_OverlookRidgeTwoCThreeBsInterestInOverlookRidgeApartmentsInvestorsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeTwoCThreeBsInterestInOverlookRidgeApartmentsInvestorsMember" xlink:to="cli_OverlookRidgeTwoCThreeBsInterestInOverlookRidgeApartmentsInvestorsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeTwoCThreeBsInterestInOverlookRidgeApartmentsInvestorsMember_lbl" xml:lang="en-US">Overlook Ridge 2C 3B's Interest In Overlook Ridge Apartments Investors [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeTwoCThreeBsInterestInOverlookRidgeApartmentsInvestorsMember_lbl" xml:lang="en-US">Overlook Ridge Two C Three Bs Interest In Overlook Ridge Apartments Investors [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeTwoCThreeBsInterestInOverlookRidgeApartmentsInvestorsMember_lbl" xml:lang="en-US">Overlook Ridge 2C 3B's Interest In Overlook Ridge Apartments Investors [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeApartmentsInvestorsLLCMember" xlink:label="cli_OverlookRidgeApartmentsInvestorsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeApartmentsInvestorsLLCMember" xlink:to="cli_OverlookRidgeApartmentsInvestorsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">Overlook Ridge Apartments Investors, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">Overlook Ridge Apartments Investors L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">Overlook Ridge Apartments Investors, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OverlookRidgeApartmentsMemberLLCMember" xlink:label="cli_OverlookRidgeApartmentsMemberLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OverlookRidgeApartmentsMemberLLCMember" xlink:to="cli_OverlookRidgeApartmentsMemberLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OverlookRidgeApartmentsMemberLLCMember_lbl" xml:lang="en-US">Overlook Ridge Apartments Member L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OverlookRidgeApartmentsMemberLLCMember_lbl" xml:lang="en-US">Overlook Ridge Apartments Member L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OverlookRidgeApartmentsMemberLLCMember_lbl" xml:lang="en-US">Overlook Ridge Apartments Member L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ParentCompanyMember" xlink:label="us-gaap_ParentCompanyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ParentCompanyMember" xlink:to="us-gaap_ParentCompanyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ParentCompanyMember_lbl" xml:lang="en-US">Parent Company [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ParentCompanyMember_lbl" xml:lang="en-US">Parent Company [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:label="us-gaap_LineOfCreditFacilityAmountOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:to="us-gaap_LineOfCreditFacilityAmountOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityAmountOutstanding_lbl" xml:lang="en-US">Line of Credit Facility, Amount Outstanding</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityAmountOutstanding_lbl" xml:lang="en-US">Amount outstanding</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfCapitalEventCashFlowsDistributed" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributed" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfCapitalEventCashFlowsDistributed" xlink:to="cli_PercentageOfCapitalEventCashFlowsDistributed_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributed_lbl" xml:lang="en-US">Percentage Of Capital Event Cash Flows Distributed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributed_lbl" xml:lang="en-US">Percentage Of Capital Event Cash Flows Distributed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributed_lbl" xml:lang="en-US">Percentage of capital event cash flows distributed</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfCapitalEventCashFlowsDistributedAfterInitialInternalRateOfReturnReached" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributedAfterInitialInternalRateOfReturnReached" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfCapitalEventCashFlowsDistributedAfterInitialInternalRateOfReturnReached" xlink:to="cli_PercentageOfCapitalEventCashFlowsDistributedAfterInitialInternalRateOfReturnReached_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributedAfterInitialInternalRateOfReturnReached_lbl" xml:lang="en-US">Percentage Of Capital Event Cash Flows Distributed After Initial Internal Rate Of Return Reached</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributedAfterInitialInternalRateOfReturnReached_lbl" xml:lang="en-US">Percentage Of Capital Event Cash Flows Distributed After Initial Internal Rate Of Return Reached</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfCapitalEventCashFlowsDistributedAfterInitialInternalRateOfReturnReached_lbl" xml:lang="en-US">Percentage of capital event cash flows distributed after initial internal rate of return reached</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentNumberOfExtensionOptions" xlink:label="cli_DebtInstrumentNumberOfExtensionOptions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentNumberOfExtensionOptions" xlink:to="cli_DebtInstrumentNumberOfExtensionOptions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentNumberOfExtensionOptions_lbl" xml:lang="en-US">Debt Instrument, Number Of Extension Options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentNumberOfExtensionOptions_lbl" xml:lang="en-US">Debt Instrument, Number Of Extension Options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentNumberOfExtensionOptions_lbl" xml:lang="en-US">Number of extension options</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfPaymentGuaranteeTerminationDebtServiceCoverageRatio" xlink:label="cli_ThresholdOfPaymentGuaranteeTerminationDebtServiceCoverageRatio" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfPaymentGuaranteeTerminationDebtServiceCoverageRatio" xlink:to="cli_ThresholdOfPaymentGuaranteeTerminationDebtServiceCoverageRatio_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfPaymentGuaranteeTerminationDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee Termination, Debt Service Coverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfPaymentGuaranteeTerminationDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee Termination, Debt Service Coverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfPaymentGuaranteeTerminationDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold of payment guarantee termination, debt service coverage ratio</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageReturnOnUnrecoveredCapital" xlink:label="cli_PercentageReturnOnUnrecoveredCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageReturnOnUnrecoveredCapital" xlink:to="cli_PercentageReturnOnUnrecoveredCapital_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageReturnOnUnrecoveredCapital_lbl" xml:lang="en-US">Percentage Return On Unrecovered Capital</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageReturnOnUnrecoveredCapital_lbl" xml:lang="en-US">Percentage return on unrecovered capital</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnrecoveredPartnersNotionalCapitalBalance" xlink:label="cli_UnrecoveredPartnersNotionalCapitalBalance" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnrecoveredPartnersNotionalCapitalBalance_lbl" xml:lang="en-US">Unrecovered Partner's Notional Capital Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnrecoveredPartnersNotionalCapitalBalance_lbl" xml:lang="en-US">Unrecovered Partners Notional Capital Balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnrecoveredPartnersNotionalCapitalBalance_lbl" xml:lang="en-US">Unrecovered notional capital</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DevelopmentManagementAndOtherServicesFees" xlink:label="cli_DevelopmentManagementAndOtherServicesFees" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DevelopmentManagementAndOtherServicesFees" xlink:to="cli_DevelopmentManagementAndOtherServicesFees_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DevelopmentManagementAndOtherServicesFees_lbl" xml:lang="en-US">Development Management And Other Services Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DevelopmentManagementAndOtherServicesFees_lbl" xml:lang="en-US">Development Management And Other Services Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DevelopmentManagementAndOtherServicesFees_lbl" xml:lang="en-US">Development management and other services fees</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RiverwalkPropertyMember" xlink:label="cli_RiverwalkPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RiverwalkPropertyMember" xlink:to="cli_RiverwalkPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RiverwalkPropertyMember_lbl" xml:lang="en-US">Riverwalk Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RiverwalkPropertyMember_lbl" xml:lang="en-US">Riverwalk Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RiverwalkPropertyMember_lbl" xml:lang="en-US">Riverwalk Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortImperialNorthRetailLLCMember" xlink:label="cli_PortImperialNorthRetailLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortImperialNorthRetailLLCMember" xlink:to="cli_PortImperialNorthRetailLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortImperialNorthRetailLLCMember_lbl" xml:lang="en-US">Port Imperial North Retail, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortImperialNorthRetailLLCMember_lbl" xml:lang="en-US">Port Imperial North Retail L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortImperialNorthRetailLLCMember_lbl" xml:lang="en-US">Port Imperial North Retail, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PRIIPortImperialRetailLLCMember" xlink:label="cli_PRIIPortImperialRetailLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PRIIPortImperialRetailLLCMember" xlink:to="cli_PRIIPortImperialRetailLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PRIIPortImperialRetailLLCMember_lbl" xml:lang="en-US">PR II Port Imperial Retail, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PRIIPortImperialRetailLLCMember_lbl" xml:lang="en-US">P R I I Port Imperial Retail L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PRIIPortImperialRetailLLCMember_lbl" xml:lang="en-US">PR II Port Imperial Retail, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ResidualOwnershipInterest" xlink:label="cli_ResidualOwnershipInterest" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ResidualOwnershipInterest" xlink:to="cli_ResidualOwnershipInterest_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ResidualOwnershipInterest_lbl" xml:lang="en-US">Residual Ownership Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ResidualOwnershipInterest_lbl" xml:lang="en-US">Residual Ownership Interest</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ResidualOwnershipInterest_lbl" xml:lang="en-US">Residual ownership interest</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BNESAssociatesIIIsInterestInOfficesAtCrystalLakeMember" xlink:label="cli_BNESAssociatesIIIsInterestInOfficesAtCrystalLakeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BNESAssociatesIIIsInterestInOfficesAtCrystalLakeMember" xlink:to="cli_BNESAssociatesIIIsInterestInOfficesAtCrystalLakeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BNESAssociatesIIIsInterestInOfficesAtCrystalLakeMember_lbl" xml:lang="en-US">BNES Associates III's Interest In The Offices At Crystal Lake [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BNESAssociatesIIIsInterestInOfficesAtCrystalLakeMember_lbl" xml:lang="en-US">B N E S Associates I I Is Interest In Offices At Crystal Lake [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BNESAssociatesIIIsInterestInOfficesAtCrystalLakeMember_lbl" xml:lang="en-US">BNES Associates III's Interest In The Offices At Crystal Lake [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OfficesAtCrystalLakeLLCMember" xlink:label="cli_OfficesAtCrystalLakeLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OfficesAtCrystalLakeLLCMember" xlink:to="cli_OfficesAtCrystalLakeLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OfficesAtCrystalLakeLLCMember_lbl" xml:lang="en-US">The Offices At Crystal Lake, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OfficesAtCrystalLakeLLCMember_lbl" xml:lang="en-US">Offices At Crystal Lake L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OfficesAtCrystalLakeLLCMember_lbl" xml:lang="en-US">The Offices At Crystal Lake, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortsideAtPierOneBuildingSevenPropertyMember" xlink:label="cli_PortsideAtPierOneBuildingSevenPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortsideAtPierOneBuildingSevenPropertyMember" xlink:to="cli_PortsideAtPierOneBuildingSevenPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortsideAtPierOneBuildingSevenPropertyMember_lbl" xml:lang="en-US">Portside At Pier One Building Seven Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortsideAtPierOneBuildingSevenPropertyMember_lbl" xml:lang="en-US">Portside At Pier One Building Seven Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortsideAtPierOneBuildingSevenPropertyMember_lbl" xml:lang="en-US">Portside At Pier One Building Seven Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortsideMasterCompanysInterestInPortsideApartmentHoldingsMember" xlink:label="cli_PortsideMasterCompanysInterestInPortsideApartmentHoldingsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortsideMasterCompanysInterestInPortsideApartmentHoldingsMember" xlink:to="cli_PortsideMasterCompanysInterestInPortsideApartmentHoldingsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortsideMasterCompanysInterestInPortsideApartmentHoldingsMember_lbl" xml:lang="en-US">Portside Master Company's Interest In Portside Apartment Holdings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortsideMasterCompanysInterestInPortsideApartmentHoldingsMember_lbl" xml:lang="en-US">Portside Master Companys Interest In Portside Apartment Holdings [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortsideMasterCompanysInterestInPortsideApartmentHoldingsMember_lbl" xml:lang="en-US">Portside Master Company's Interest In Portside Apartment Holdings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PRIIPortsideInvestorsLLCMember" xlink:label="cli_PRIIPortsideInvestorsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PRIIPortsideInvestorsLLCMember" xlink:to="cli_PRIIPortsideInvestorsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PRIIPortsideInvestorsLLCMember_lbl" xml:lang="en-US">PR II Portside Investors, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PRIIPortsideInvestorsLLCMember_lbl" xml:lang="en-US">P R I I Portside Investors L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PRIIPortsideInvestorsLLCMember_lbl" xml:lang="en-US">PR II Portside Investors, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortsideApartmentHoldingsLLCMember" xlink:label="cli_PortsideApartmentHoldingsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortsideApartmentHoldingsLLCMember" xlink:to="cli_PortsideApartmentHoldingsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortsideApartmentHoldingsLLCMember_lbl" xml:lang="en-US">Portside Apartment Holdings, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortsideApartmentHoldingsLLCMember_lbl" xml:lang="en-US">Portside Apartment Holdings L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortsideApartmentHoldingsLLCMember_lbl" xml:lang="en-US">Portside Apartment Holdings, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfDebtGuaranteedByCompany" xlink:label="cli_PercentageOfDebtGuaranteedByCompany" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfDebtGuaranteedByCompany" xlink:to="cli_PercentageOfDebtGuaranteedByCompany_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfDebtGuaranteedByCompany_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfDebtGuaranteedByCompany_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfDebtGuaranteedByCompany_lbl" xml:lang="en-US">Percentage of debt guaranteed by the company</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletion" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletion" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletion_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company After Project Completion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletion_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company After Project Completion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletion_lbl" xml:lang="en-US">Percentage of debt guaranteed by the company after project completion</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached" xlink:to="cli_PercentageOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company After Debt Service Coverage Ratio Threshold Reached</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company After Debt Service Coverage Ratio Threshold Reached</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached_lbl" xml:lang="en-US">Percentage of debt guaranteed by the company after debt service coverage ratio threshold reached</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtServiceCoverageRatioAxis" xlink:label="cli_DebtServiceCoverageRatioAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtServiceCoverageRatioAxis" xlink:to="cli_DebtServiceCoverageRatioAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtServiceCoverageRatioAxis_lbl" xml:lang="en-US">Debt Service Coverage Ratio [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtServiceCoverageRatioAxis_lbl" xml:lang="en-US">Debt Service Coverage Ratio [Axis]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtServiceCoverageRatioDomain" xlink:label="cli_DebtServiceCoverageRatioDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtServiceCoverageRatioDomain" xlink:to="cli_DebtServiceCoverageRatioDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtServiceCoverageRatioDomain_lbl" xml:lang="en-US">Debt Service Coverage Ratio [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtServiceCoverageRatioDomain_lbl" xml:lang="en-US">Debt Service Coverage Ratio [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtServiceCoverageRatioDomain_lbl" xml:lang="en-US">Debt Service Coverage Ratio [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtServiceCoverageRatioOneMember" xlink:label="cli_DebtServiceCoverageRatioOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtServiceCoverageRatioOneMember" xlink:to="cli_DebtServiceCoverageRatioOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtServiceCoverageRatioOneMember_lbl" xml:lang="en-US">Debt Service Coverage Ratio One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtServiceCoverageRatioOneMember_lbl" xml:lang="en-US">Debt Service Coverage Ratio One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtServiceCoverageRatioOneMember_lbl" xml:lang="en-US">1.25 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtServiceCoverageRatioTwoMember" xlink:label="cli_DebtServiceCoverageRatioTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtServiceCoverageRatioTwoMember" xlink:to="cli_DebtServiceCoverageRatioTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtServiceCoverageRatioTwoMember_lbl" xml:lang="en-US">Debt Service Coverage Ratio Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtServiceCoverageRatioTwoMember_lbl" xml:lang="en-US">Debt Service Coverage Ratio Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtServiceCoverageRatioTwoMember_lbl" xml:lang="en-US">1.40 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortImperialThirteenMember" xlink:label="cli_PortImperialThirteenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortImperialThirteenMember" xlink:to="cli_PortImperialThirteenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortImperialThirteenMember_lbl" xml:lang="en-US">Port Imperial 13 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortImperialThirteenMember_lbl" xml:lang="en-US">Port Imperial Thirteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortImperialThirteenMember_lbl" xml:lang="en-US">Port Imperial 13 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PRIIPortImperialSouthThirteenInvestorLLCMember" xlink:label="cli_PRIIPortImperialSouthThirteenInvestorLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PRIIPortImperialSouthThirteenInvestorLLCMember" xlink:to="cli_PRIIPortImperialSouthThirteenInvestorLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PRIIPortImperialSouthThirteenInvestorLLCMember_lbl" xml:lang="en-US">PR II Port Imperial South 13 Investor, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PRIIPortImperialSouthThirteenInvestorLLCMember_lbl" xml:lang="en-US">P R I I Port Imperial South Thirteen Investor L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PRIIPortImperialSouthThirteenInvestorLLCMember_lbl" xml:lang="en-US">PR II Port Imperial South 13 Investor, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LimitedPartnersContributedCapital" xlink:label="us-gaap_LimitedPartnersContributedCapital" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersContributedCapital" xlink:to="us-gaap_LimitedPartnersContributedCapital_lbl" />
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    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AmountOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached" xlink:label="cli_AmountOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AmountOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached_lbl" xml:lang="en-US">Amount Of Debt Guaranteed By Company After Debt Service Coverage Ratio Threshold Reached</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AmountOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached_lbl" xml:lang="en-US">Amount Of Debt Guaranteed By Company After Debt Service Coverage Ratio Threshold Reached</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AmountOfDebtGuaranteedByCompanyAfterDebtServiceCoverageRatioThresholdReached_lbl" xml:lang="en-US">Amount of debt guaranteed by the company after debt service coverage ratio threshold reached</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfPaymentGuaranteeReductionDebtServiceCoverageRatio" xlink:label="cli_ThresholdOfPaymentGuaranteeReductionDebtServiceCoverageRatio" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfPaymentGuaranteeReductionDebtServiceCoverageRatio" xlink:to="cli_ThresholdOfPaymentGuaranteeReductionDebtServiceCoverageRatio_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfPaymentGuaranteeReductionDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee Reduction, Debt Service Coverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfPaymentGuaranteeReductionDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee Reduction, Debt Service Coverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfPaymentGuaranteeReductionDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold of payment guarantee reduction, debt service coverage ratio</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ParcelCMember" xlink:label="cli_ParcelCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ParcelCMember" xlink:to="cli_ParcelCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ParcelCMember_lbl" xml:lang="en-US">Parcel C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ParcelCMember_lbl" xml:lang="en-US">Parcel C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ParcelCMember_lbl" xml:lang="en-US">Parcel C [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrudentialPortImperialLLCMember" xlink:label="cli_PrudentialPortImperialLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrudentialPortImperialLLCMember" xlink:to="cli_PrudentialPortImperialLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrudentialPortImperialLLCMember_lbl" xml:lang="en-US">Prudential Port Imperial, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrudentialPortImperialLLCMember_lbl" xml:lang="en-US">Prudential Port Imperial L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrudentialPortImperialLLCMember_lbl" xml:lang="en-US">Prudential-Port Imperial, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrudentialAndPrudentialPortImperialLLCMember" xlink:label="cli_PrudentialAndPrudentialPortImperialLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrudentialAndPrudentialPortImperialLLCMember" xlink:to="cli_PrudentialAndPrudentialPortImperialLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrudentialAndPrudentialPortImperialLLCMember_lbl" xml:lang="en-US">Prudential And Prudential-Port Imperial, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrudentialAndPrudentialPortImperialLLCMember_lbl" xml:lang="en-US">Prudential And Prudential Port Imperial L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrudentialAndPrudentialPortImperialLLCMember_lbl" xml:lang="en-US">Prudential And Prudential-Port Imperial, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfReturnOnAdditionalCapitalContributions" xlink:label="cli_PercentageOfReturnOnAdditionalCapitalContributions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfReturnOnAdditionalCapitalContributions" xlink:to="cli_PercentageOfReturnOnAdditionalCapitalContributions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfReturnOnAdditionalCapitalContributions_lbl" xml:lang="en-US">Percentage Of Return On Additional Capital Contributions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfReturnOnAdditionalCapitalContributions_lbl" xml:lang="en-US">Percentage Of Return On Additional Capital Contributions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfReturnOnAdditionalCapitalContributions_lbl" xml:lang="en-US">Percentage of return on additional capital contribution</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoseGardenMarbellaSouthsInterestInPruRoseMarbellaIIMember" xlink:label="cli_RoseGardenMarbellaSouthsInterestInPruRoseMarbellaIIMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoseGardenMarbellaSouthsInterestInPruRoseMarbellaIIMember" xlink:to="cli_RoseGardenMarbellaSouthsInterestInPruRoseMarbellaIIMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoseGardenMarbellaSouthsInterestInPruRoseMarbellaIIMember_lbl" xml:lang="en-US">RoseGarden Marbella South's Interest In PruRose Marbella II [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoseGardenMarbellaSouthsInterestInPruRoseMarbellaIIMember_lbl" xml:lang="en-US">Rose Garden Marbella Souths Interest In Pru Rose Marbella I I [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoseGardenMarbellaSouthsInterestInPruRoseMarbellaIIMember_lbl" xml:lang="en-US">RoseGarden Marbella South's Interest In PruRose Marbella II [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MgMarbellaPartnersIILLCMember" xlink:label="cli_MgMarbellaPartnersIILLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MgMarbellaPartnersIILLCMember" xlink:to="cli_MgMarbellaPartnersIILLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MgMarbellaPartnersIILLCMember_lbl" xml:lang="en-US">MG Marbella Partners II, L.L.C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MgMarbellaPartnersIILLCMember_lbl" xml:lang="en-US">Mg Marbella Partners I I L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MgMarbellaPartnersIILLCMember_lbl" xml:lang="en-US">MG Marbella Partners II, L.L.C [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PruRoseMarbellaIILLCMember" xlink:label="cli_PruRoseMarbellaIILLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PruRoseMarbellaIILLCMember" xlink:to="cli_PruRoseMarbellaIILLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PruRoseMarbellaIILLCMember_lbl" xml:lang="en-US">PruRose Marbella II, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PruRoseMarbellaIILLCMember_lbl" xml:lang="en-US">Pru Rose Marbella I I L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PruRoseMarbellaIILLCMember_lbl" xml:lang="en-US">PruRose Marbella II, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RiverTraceProjectMember" xlink:label="cli_RiverTraceProjectMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RiverTraceProjectMember" xlink:to="cli_RiverTraceProjectMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RiverTraceProjectMember_lbl" xml:lang="en-US">RiverTrace Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RiverTraceProjectMember_lbl" xml:lang="en-US">River Trace Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RiverTraceProjectMember_lbl" xml:lang="en-US">RiverTrace Project [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PruRoseRiverwalkGsInterestInRiverwalkGUrbanRenewalMember" xlink:label="cli_PruRoseRiverwalkGsInterestInRiverwalkGUrbanRenewalMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PruRoseRiverwalkGsInterestInRiverwalkGUrbanRenewalMember" xlink:to="cli_PruRoseRiverwalkGsInterestInRiverwalkGUrbanRenewalMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PruRoseRiverwalkGsInterestInRiverwalkGUrbanRenewalMember_lbl" xml:lang="en-US">PruRose Riverwalk G's Interest In Riverwalk G Urban Renewal [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PruRoseRiverwalkGsInterestInRiverwalkGUrbanRenewalMember_lbl" xml:lang="en-US">Pru Rose Riverwalk Gs Interest In Riverwalk G Urban Renewal [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PruRoseRiverwalkGsInterestInRiverwalkGUrbanRenewalMember_lbl" xml:lang="en-US">PruRose Riverwalk G's Interest In Riverwalk G Urban Renewal [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WestNewYorkParcelGApartmentsInvestorsLLCMember" xlink:label="cli_WestNewYorkParcelGApartmentsInvestorsLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WestNewYorkParcelGApartmentsInvestorsLLCMember" xlink:to="cli_WestNewYorkParcelGApartmentsInvestorsLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WestNewYorkParcelGApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">West New York Parcel G Apartments Investors, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WestNewYorkParcelGApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">West New York Parcel G Apartments Investors L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WestNewYorkParcelGApartmentsInvestorsLLCMember_lbl" xml:lang="en-US">West New York Parcel G Apartments Investors, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RiverwalkGUrbanRenewalLLCMember" xlink:label="cli_RiverwalkGUrbanRenewalLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RiverwalkGUrbanRenewalLLCMember" xlink:to="cli_RiverwalkGUrbanRenewalLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RiverwalkGUrbanRenewalLLCMember_lbl" xml:lang="en-US">Riverwalk G Urban Renewal, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RiverwalkGUrbanRenewalLLCMember_lbl" xml:lang="en-US">Riverwalk G Urban Renewal L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RiverwalkGUrbanRenewalLLCMember_lbl" xml:lang="en-US">Riverwalk G Urban Renewal, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AmountOfCompanysInitialDistributionsToBeRedirected" xlink:label="cli_AmountOfCompanysInitialDistributionsToBeRedirected" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AmountOfCompanysInitialDistributionsToBeRedirected" xlink:to="cli_AmountOfCompanysInitialDistributionsToBeRedirected_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AmountOfCompanysInitialDistributionsToBeRedirected_lbl" xml:lang="en-US">Amount Of Company's Initial Distributions To Be Redirected</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AmountOfCompanysInitialDistributionsToBeRedirected_lbl" xml:lang="en-US">Amount Of Companys Initial Distributions To Be Redirected</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AmountOfCompanysInitialDistributionsToBeRedirected_lbl" xml:lang="en-US">Amount of company's initial distributions to be redirected</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PeriodOfLoanGuaranteeByCompanyFollowingCompletionOfProject" xlink:label="cli_PeriodOfLoanGuaranteeByCompanyFollowingCompletionOfProject" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PeriodOfLoanGuaranteeByCompanyFollowingCompletionOfProject" xlink:to="cli_PeriodOfLoanGuaranteeByCompanyFollowingCompletionOfProject_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PeriodOfLoanGuaranteeByCompanyFollowingCompletionOfProject_lbl" xml:lang="en-US">Period Of Loan Guarantee By Company Following Completion Of Project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PeriodOfLoanGuaranteeByCompanyFollowingCompletionOfProject_lbl" xml:lang="en-US">Period Of Loan Guarantee By Company Following Completion Of Project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PeriodOfLoanGuaranteeByCompanyFollowingCompletionOfProject_lbl" xml:lang="en-US">Period of loan guarantee by company following completion of project</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LincolnHarborProjectBuildingaMember" xlink:label="cli_LincolnHarborProjectBuildingaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LincolnHarborProjectBuildingaMember" xlink:to="cli_LincolnHarborProjectBuildingaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LincolnHarborProjectBuildingaMember_lbl" xml:lang="en-US">Lincoln Harbor Project, Building A [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LincolnHarborProjectBuildingaMember_lbl" xml:lang="en-US">Lincoln Harbor Project Buildinga [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LincolnHarborProjectBuildingaMember_lbl" xml:lang="en-US">Lincoln Harbor Project, Building A [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LincolnHarborProjectBuildingCMember" xlink:label="cli_LincolnHarborProjectBuildingCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LincolnHarborProjectBuildingCMember" xlink:to="cli_LincolnHarborProjectBuildingCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LincolnHarborProjectBuildingCMember_lbl" xml:lang="en-US">Lincoln Harbor Project, Building C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LincolnHarborProjectBuildingCMember_lbl" xml:lang="en-US">Lincoln Harbor Project Building C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LincolnHarborProjectBuildingCMember_lbl" xml:lang="en-US">Lincoln Harbor Project, Building C [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LincolnHarborProjectBuildingBMember" xlink:label="cli_LincolnHarborProjectBuildingBMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LincolnHarborProjectBuildingBMember" xlink:to="cli_LincolnHarborProjectBuildingBMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LincolnHarborProjectBuildingBMember_lbl" xml:lang="en-US">Lincoln Harbor Project, Building B [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LincolnHarborProjectBuildingBMember_lbl" xml:lang="en-US">Lincoln Harbor Project Building B [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LincolnHarborProjectBuildingBMember_lbl" xml:lang="en-US">Lincoln Harbor Project, Building B [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LincolnHarborProjectMember" xlink:label="cli_LincolnHarborProjectMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LincolnHarborProjectMember" xlink:to="cli_LincolnHarborProjectMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LincolnHarborProjectMember_lbl" xml:lang="en-US">Lincoln Harbor Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LincolnHarborProjectMember_lbl" xml:lang="en-US">Lincoln Harbor Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LincolnHarborProjectMember_lbl" xml:lang="en-US">Lincoln Harbor Project [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LincolnHarborProjectBuildingsAandCMember" xlink:label="cli_LincolnHarborProjectBuildingsAandCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LincolnHarborProjectBuildingsAandCMember" xlink:to="cli_LincolnHarborProjectBuildingsAandCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LincolnHarborProjectBuildingsAandCMember_lbl" xml:lang="en-US">Lincoln Harbor Project Buildings A And C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LincolnHarborProjectBuildingsAandCMember_lbl" xml:lang="en-US">Lincoln Harbor Project Buildings Aand C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LincolnHarborProjectBuildingsAandCMember_lbl" xml:lang="en-US">Lincoln Harbor Project Buildings A And C [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElmajoUrbanRenewalAssociatesLLCAndEstuaryUrbanRenewalAssociatesLLCMember" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCAndEstuaryUrbanRenewalAssociatesLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElmajoUrbanRenewalAssociatesLLCAndEstuaryUrbanRenewalAssociatesLLCMember" xlink:to="cli_ElmajoUrbanRenewalAssociatesLLCAndEstuaryUrbanRenewalAssociatesLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCAndEstuaryUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Elmajo Urban Renewal Associates, LLC And Estuary Urban Renewal Associates, LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCAndEstuaryUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Elmajo Urban Renewal Associates L L C And Estuary Urban Renewal Associates L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElmajoUrbanRenewalAssociatesLLCAndEstuaryUrbanRenewalAssociatesLLCMember_lbl" xml:lang="en-US">Elmajo Urban Renewal Associates, LLC And Estuary Urban Renewal Associates, LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElmajoManagementIncMember" xlink:label="cli_ElmajoManagementIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElmajoManagementIncMember" xlink:to="cli_ElmajoManagementIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElmajoManagementIncMember_lbl" xml:lang="en-US">ELMAJO Management, Inc. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElmajoManagementIncMember_lbl" xml:lang="en-US">Elmajo Management Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElmajoManagementIncMember_lbl" xml:lang="en-US">ELMAJO Management, Inc. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ProjectCostsRequiredFundingAmount" xlink:label="cli_ProjectCostsRequiredFundingAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ProjectCostsRequiredFundingAmount" xlink:to="cli_ProjectCostsRequiredFundingAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ProjectCostsRequiredFundingAmount_lbl" xml:lang="en-US">Project Costs, Required Funding Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ProjectCostsRequiredFundingAmount_lbl" xml:lang="en-US">Project Costs, Required Funding Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ProjectCostsRequiredFundingAmount_lbl" xml:lang="en-US">Funding requirements</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RiverparkProjectMember" xlink:label="cli_RiverparkProjectMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RiverparkProjectMember" xlink:to="cli_RiverparkProjectMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RiverparkProjectMember_lbl" xml:lang="en-US">Riverpark Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RiverparkProjectMember_lbl" xml:lang="en-US">Riverpark Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RiverparkProjectMember_lbl" xml:lang="en-US">Riverpark Project [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ChallEnterprisesLLCMember" xlink:label="cli_ChallEnterprisesLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ChallEnterprisesLLCMember" xlink:to="cli_ChallEnterprisesLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ChallEnterprisesLLCMember_lbl" xml:lang="en-US">Chall Enterprises, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ChallEnterprisesLLCMember_lbl" xml:lang="en-US">Chall Enterprises L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ChallEnterprisesLLCMember_lbl" xml:lang="en-US">Chall Enterprises, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InvestorGroupMember" xlink:label="cli_InvestorGroupMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InvestorGroupMember" xlink:to="cli_InvestorGroupMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InvestorGroupMember_lbl" xml:lang="en-US">Investor Group [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InvestorGroupMember_lbl" xml:lang="en-US">Investor Group [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InvestorGroupMember_lbl" xml:lang="en-US">Investor Group [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfCapitalRequiredToFundProject" xlink:label="cli_PercentageOfCapitalRequiredToFundProject" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfCapitalRequiredToFundProject" xlink:to="cli_PercentageOfCapitalRequiredToFundProject_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfCapitalRequiredToFundProject_lbl" xml:lang="en-US">Percentage Of Capital Required To Fund Project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfCapitalRequiredToFundProject_lbl" xml:lang="en-US">Percentage Of Capital Required To Fund Project</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfCapitalRequiredToFundProject_lbl" xml:lang="en-US">Percentage of capital required to fund project</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletionAndAchievementOfFinancialRatios" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletionAndAchievementOfFinancialRatios" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletionAndAchievementOfFinancialRatios" xlink:to="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletionAndAchievementOfFinancialRatios_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletionAndAchievementOfFinancialRatios_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company After Project Completion And Achievement Of Financial Ratios</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletionAndAchievementOfFinancialRatios_lbl" xml:lang="en-US">Percentage Of Debt Guaranteed By Company After Project Completion And Achievement Of Financial Ratios</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfDebtGuaranteedByCompanyAfterProjectCompletionAndAchievementOfFinancialRatios_lbl" xml:lang="en-US">Percentage of debt guaranteed by company after project completion and achievement of financial ratios</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfPaymentGuaranteeDebtServiceCoverageRatio" xlink:label="cli_ThresholdOfPaymentGuaranteeDebtServiceCoverageRatio" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfPaymentGuaranteeDebtServiceCoverageRatio" xlink:to="cli_ThresholdOfPaymentGuaranteeDebtServiceCoverageRatio_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfPaymentGuaranteeDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee, Debt Service Coverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfPaymentGuaranteeDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee, Debt Service Coverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfPaymentGuaranteeDebtServiceCoverageRatio_lbl" xml:lang="en-US">Threshold of payment guarantee, debt service coverage ratio</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfPaymentGuaranteeLoanToValueRatio" xlink:label="cli_ThresholdOfPaymentGuaranteeLoanToValueRatio" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfPaymentGuaranteeLoanToValueRatio" xlink:to="cli_ThresholdOfPaymentGuaranteeLoanToValueRatio_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfPaymentGuaranteeLoanToValueRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee, Loan To Value Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfPaymentGuaranteeLoanToValueRatio_lbl" xml:lang="en-US">Threshold Of Payment Guarantee, Loan To Value Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfPaymentGuaranteeLoanToValueRatio_lbl" xml:lang="en-US">Threshold of payment guarantee, loan-to-value ratio</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UBSGlobalAssetManagementMember" xlink:label="cli_UBSGlobalAssetManagementMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UBSGlobalAssetManagementMember" xlink:to="cli_UBSGlobalAssetManagementMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UBSGlobalAssetManagementMember_lbl" xml:lang="en-US">UBS Global Asset Management [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UBSGlobalAssetManagementMember_lbl" xml:lang="en-US">U B S Global Asset Management [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UBSGlobalAssetManagementMember_lbl" xml:lang="en-US">UBS Global Asset Management [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfUnitsAvailableForDevelopment" xlink:label="cli_NumberOfUnitsAvailableForDevelopment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfUnitsAvailableForDevelopment" xlink:to="cli_NumberOfUnitsAvailableForDevelopment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfUnitsAvailableForDevelopment_lbl" xml:lang="en-US">Number Of Units Available For Development</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfUnitsAvailableForDevelopment_lbl" xml:lang="en-US">Number Of Units Available For Development</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfUnitsAvailableForDevelopment_lbl" xml:lang="en-US">Number of units available for development</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfApprovedUnitsAvailableForDevelopment" xlink:label="cli_NumberOfApprovedUnitsAvailableForDevelopment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfApprovedUnitsAvailableForDevelopment" xlink:to="cli_NumberOfApprovedUnitsAvailableForDevelopment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfApprovedUnitsAvailableForDevelopment_lbl" xml:lang="en-US">Number Of Approved Units Available For Development</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfApprovedUnitsAvailableForDevelopment_lbl" xml:lang="en-US">Number Of Approved Units Available For Development</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfApprovedUnitsAvailableForDevelopment_lbl" xml:lang="en-US">Number of approved units available for development</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfInterestInDevelopableLand" xlink:label="cli_PercentageOfInterestInDevelopableLand" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfInterestInDevelopableLand" xlink:to="cli_PercentageOfInterestInDevelopableLand_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfInterestInDevelopableLand_lbl" xml:lang="en-US">Percentage Of Interest In Developable Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfInterestInDevelopableLand_lbl" xml:lang="en-US">Percentage Of Interest In Developable Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfInterestInDevelopableLand_lbl" xml:lang="en-US">Percentage of interest in developable land</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgageLoanInitialTermOfInterestOnlyPayments" xlink:label="cli_MortgageLoanInitialTermOfInterestOnlyPayments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgageLoanInitialTermOfInterestOnlyPayments" xlink:to="cli_MortgageLoanInitialTermOfInterestOnlyPayments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgageLoanInitialTermOfInterestOnlyPayments_lbl" xml:lang="en-US">Mortgage Loan, Initial Term Of Interest Only Payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgageLoanInitialTermOfInterestOnlyPayments_lbl" xml:lang="en-US">Mortgage Loan, Initial Term Of Interest Only Payments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgageLoanInitialTermOfInterestOnlyPayments_lbl" xml:lang="en-US">Initial term of interest only payments</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KpgMcgsInterestInKpgPMember" xlink:label="cli_KpgMcgsInterestInKpgPMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KpgMcgsInterestInKpgPMember" xlink:to="cli_KpgMcgsInterestInKpgPMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KpgMcgsInterestInKpgPMember_lbl" xml:lang="en-US">KPG-MCG's Interest In KPG-P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KpgMcgsInterestInKpgPMember_lbl" xml:lang="en-US">Kpg Mcgs Interest In Kpg P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KpgMcgsInterestInKpgPMember_lbl" xml:lang="en-US">KPG-MCG's Interest In KPG-P [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KpgsInterestInKpgPMember" xlink:label="cli_KpgsInterestInKpgPMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KpgsInterestInKpgPMember" xlink:to="cli_KpgsInterestInKpgPMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KpgsInterestInKpgPMember_lbl" xml:lang="en-US">KPG's Interest In KPG-P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KpgsInterestInKpgPMember_lbl" xml:lang="en-US">Kpgs Interest In Kpg P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KpgsInterestInKpgPMember_lbl" xml:lang="en-US">KPG's Interest In KPG-P [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ParkwaysInterestInKpgPMember" xlink:label="cli_ParkwaysInterestInKpgPMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ParkwaysInterestInKpgPMember" xlink:to="cli_ParkwaysInterestInKpgPMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ParkwaysInterestInKpgPMember_lbl" xml:lang="en-US">Parkway's Interest In KPG-P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ParkwaysInterestInKpgPMember_lbl" xml:lang="en-US">Parkways Interest In Kpg P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ParkwaysInterestInKpgPMember_lbl" xml:lang="en-US">Parkway's Interest In KPG-P [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredImwPropertyMember" xlink:label="cli_OneHundredImwPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredImwPropertyMember" xlink:to="cli_OneHundredImwPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredImwPropertyMember_lbl" xml:lang="en-US">100 IMW Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredImwPropertyMember_lbl" xml:lang="en-US">One Hundred Imw Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredImwPropertyMember_lbl" xml:lang="en-US">100 IMW Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KpgPOneHundredImwJvLlcMember" xlink:label="cli_KpgPOneHundredImwJvLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KpgPOneHundredImwJvLlcMember" xlink:to="cli_KpgPOneHundredImwJvLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KpgPOneHundredImwJvLlcMember_lbl" xml:lang="en-US">KPG-P 100 IMW JV, LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KpgPOneHundredImwJvLlcMember_lbl" xml:lang="en-US">Kpg P One Hundred Imw Jv Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KpgPOneHundredImwJvLlcMember_lbl" xml:lang="en-US">KPG-P 100 IMW JV, LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KpgImwOwnerLlcMember" xlink:label="cli_KpgImwOwnerLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KpgImwOwnerLlcMember" xlink:to="cli_KpgImwOwnerLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KpgImwOwnerLlcMember_lbl" xml:lang="en-US">KPG-IMW Owner, LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KpgImwOwnerLlcMember_lbl" xml:lang="en-US">Kpg Imw Owner Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KpgImwOwnerLlcMember_lbl" xml:lang="en-US">KPG-IMW Owner, LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KpgMcgImwLlcMember" xlink:label="cli_KpgMcgImwLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KpgMcgImwLlcMember" xlink:to="cli_KpgMcgImwLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KpgMcgImwLlcMember_lbl" xml:lang="en-US">KPG-MCG IMW, LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KpgMcgImwLlcMember_lbl" xml:lang="en-US">Kpg Mcg Imw Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KpgMcgImwLlcMember_lbl" xml:lang="en-US">KPG-MCG IMW, LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_KpgPMember" xlink:label="cli_KpgPMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_KpgPMember" xlink:to="cli_KpgPMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_KpgPMember_lbl" xml:lang="en-US">KPG-P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_KpgPMember_lbl" xml:lang="en-US">Kpg P [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_KpgPMember_lbl" xml:lang="en-US">KPG-P [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AreaOfRealEstatePropertyConversion" xlink:label="cli_AreaOfRealEstatePropertyConversion" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AreaOfRealEstatePropertyConversion" xlink:to="cli_AreaOfRealEstatePropertyConversion_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AreaOfRealEstatePropertyConversion_lbl" xml:lang="en-US">Area Of Real Estate Property, Conversion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AreaOfRealEstatePropertyConversion_lbl" xml:lang="en-US">Area Of Real Estate Property, Conversion</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AreaOfRealEstatePropertyConversion_lbl" xml:lang="en-US">Area of property to be converted</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfNetOperatingCashFlows" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfNetOperatingCashFlows" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfNetOperatingCashFlows" xlink:to="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfNetOperatingCashFlows_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfNetOperatingCashFlows_lbl" xml:lang="en-US">Threshold Of Member Unreturned Capital For Distribution Of Net Operating Cash Flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfNetOperatingCashFlows_lbl" xml:lang="en-US">Threshold Of Member Unreturned Capital For Distribution Of Net Operating Cash Flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfNetOperatingCashFlows_lbl" xml:lang="en-US">Threshold of member unreturned capital for distribution of net operating cash flows</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfCapitalEventCashFlows" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfCapitalEventCashFlows" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfCapitalEventCashFlows" xlink:to="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" xml:lang="en-US">Threshold Of Member Unreturned Capital For Distribution Of Capital Event Cash Flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" xml:lang="en-US">Threshold Of Member Unreturned Capital For Distribution Of Capital Event Cash Flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfMemberUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" xml:lang="en-US">Threshold of member unreturned capital for distribution of capital event flows</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThresholdOfMemberDeferredUnreturnedCapitalForDistributionOfCapitalEventCashFlows" xlink:label="cli_ThresholdOfMemberDeferredUnreturnedCapitalForDistributionOfCapitalEventCashFlows" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThresholdOfMemberDeferredUnreturnedCapitalForDistributionOfCapitalEventCashFlows" xlink:to="cli_ThresholdOfMemberDeferredUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThresholdOfMemberDeferredUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" xml:lang="en-US">Threshold Of Member Deferred Unreturned Capital For Distribution Of Capital Event Cash Flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThresholdOfMemberDeferredUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" xml:lang="en-US">Threshold Of Member Deferred Unreturned Capital For Distribution Of Capital Event Cash Flows</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThresholdOfMemberDeferredUnreturnedCapitalForDistributionOfCapitalEventCashFlows_lbl" xml:lang="en-US">Threshold of member deferred unreturned capital for distribution of capital event flows</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LineOfCreditFacilityExtensionPeriod" xlink:label="cli_LineOfCreditFacilityExtensionPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LineOfCreditFacilityExtensionPeriod" xlink:to="cli_LineOfCreditFacilityExtensionPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LineOfCreditFacilityExtensionPeriod_lbl" xml:lang="en-US">Line Of Credit Facility Extension Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LineOfCreditFacilityExtensionPeriod_lbl" xml:lang="en-US">Line Of Credit Facility Extension Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LineOfCreditFacilityExtensionPeriod_lbl" xml:lang="en-US">Credit facility, extension period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WdcProjectMember" xlink:label="cli_WdcProjectMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WdcProjectMember" xlink:to="cli_WdcProjectMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WdcProjectMember_lbl" xml:lang="en-US">WDC Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WdcProjectMember_lbl" xml:lang="en-US">Wdc Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WdcProjectMember_lbl" xml:lang="en-US">WDC Project [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CapitolPlaceMezzLlcMember" xlink:label="cli_CapitolPlaceMezzLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CapitolPlaceMezzLlcMember" xlink:to="cli_CapitolPlaceMezzLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CapitolPlaceMezzLlcMember_lbl" xml:lang="en-US">Capitol Place Mezz LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CapitolPlaceMezzLlcMember_lbl" xml:lang="en-US">Capitol Place Mezz Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CapitolPlaceMezzLlcMember_lbl" xml:lang="en-US">Capitol Place Mezz LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FbCapitolPlaceLlcMember" xlink:label="cli_FbCapitolPlaceLlcMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FbCapitolPlaceLlcMember" xlink:to="cli_FbCapitolPlaceLlcMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FbCapitolPlaceLlcMember_lbl" xml:lang="en-US">FB Capitol Place LLC [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FbCapitolPlaceLlcMember_lbl" xml:lang="en-US">Fb Capitol Place Llc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FbCapitolPlaceLlcMember_lbl" xml:lang="en-US">FB Capitol Place LLC [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ConstructionAndDevelopmentCostsIncurred" xlink:label="cli_ConstructionAndDevelopmentCostsIncurred" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ConstructionAndDevelopmentCostsIncurred" xlink:to="cli_ConstructionAndDevelopmentCostsIncurred_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ConstructionAndDevelopmentCostsIncurred_lbl" xml:lang="en-US">Construction and development costs incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ConstructionAndDevelopmentCostsIncurred_lbl" xml:lang="en-US">Construction And Development Costs Incurred</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ConstructionAndDevelopmentCostsIncurred_lbl" xml:lang="en-US">Costs of the project incurred</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredCostsLeasingGross" xlink:label="us-gaap_DeferredCostsLeasingGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCostsLeasingGross" xlink:to="us-gaap_DeferredCostsLeasingGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredCostsLeasingGross_lbl" xml:lang="en-US">Deferred Costs, Leasing, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredCostsLeasingGross_lbl" xml:lang="en-US">Deferred leasing costs</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredFinanceCostsGross" xlink:label="us-gaap_DeferredFinanceCostsGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFinanceCostsGross" xlink:to="us-gaap_DeferredFinanceCostsGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xml:lang="en-US">Deferred Finance Costs, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xml:lang="en-US">Deferred financing costs</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DeferredCostsGross" xlink:label="cli_DeferredCostsGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DeferredCostsGross" xlink:to="cli_DeferredCostsGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DeferredCostsGross_lbl" xml:lang="en-US">Deferred Costs, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DeferredCostsGross_lbl" xml:lang="en-US">Deferred Costs, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_DeferredCostsGross_lbl" xml:lang="en-US">Deferred charges, gross</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AccumulatedAmortizationLeasingAndFinancingCosts" xlink:label="cli_AccumulatedAmortizationLeasingAndFinancingCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AccumulatedAmortizationLeasingAndFinancingCosts" xlink:to="cli_AccumulatedAmortizationLeasingAndFinancingCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AccumulatedAmortizationLeasingAndFinancingCosts_lbl" xml:lang="en-US">Accumulated Amortization Leasing And Financing Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AccumulatedAmortizationLeasingAndFinancingCosts_lbl" xml:lang="en-US">Accumulated Amortization Leasing And Financing Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_AccumulatedAmortizationLeasingAndFinancingCosts_lbl" xml:lang="en-US">Accumulated amortization</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredCosts" xlink:label="us-gaap_DeferredCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCosts" xlink:to="us-gaap_DeferredCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredCosts_lbl" xml:lang="en-US">Deferred charges, net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_DeferredCosts_lbl" xml:lang="en-US">Deferred charges, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases" xlink:label="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases" xlink:to="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_lbl" xml:lang="en-US">Finite-Lived Intangible Asset, Acquired-in-Place Leases</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_lbl" xml:lang="en-US">In-place lease values, related intangible and other assets, net</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssets" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssets" xlink:to="us-gaap_PrepaidExpenseAndOtherAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PrepaidExpenseAndOtherAssets_lbl" xml:lang="en-US">Prepaid expenses and other assets, net</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgageLoansOnRealEstateBasisSpreadOverVariableInterestRate" xlink:label="cli_MortgageLoansOnRealEstateBasisSpreadOverVariableInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgageLoansOnRealEstateBasisSpreadOverVariableInterestRate" xlink:to="cli_MortgageLoansOnRealEstateBasisSpreadOverVariableInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgageLoansOnRealEstateBasisSpreadOverVariableInterestRate_lbl" xml:lang="en-US">Mortgage Loans On Real Estate, Basis Spread Over Variable Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgageLoansOnRealEstateBasisSpreadOverVariableInterestRate_lbl" xml:lang="en-US">Mortgage Loans On Real Estate, Basis Spread Over Variable Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgageLoansOnRealEstateBasisSpreadOverVariableInterestRate_lbl" xml:lang="en-US">Spread over LIBOR</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MortgageLoansOnRealEstateInterestRate" xlink:label="us-gaap_MortgageLoansOnRealEstateInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MortgageLoansOnRealEstateInterestRate" xlink:to="us-gaap_MortgageLoansOnRealEstateInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MortgageLoansOnRealEstateInterestRate_lbl" xml:lang="en-US">Mortgage Loans on Real Estate, Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MortgageLoansOnRealEstateInterestRate_lbl" xml:lang="en-US">Interest rate</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xml:lang="en-US">Finite-Lived Intangible Assets [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xml:lang="en-US">2014</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xml:lang="en-US">2015</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xml:lang="en-US">2016</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xml:lang="en-US">2017</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xml:lang="en-US">2018</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xml:lang="en-US">Amortization of Intangible Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xml:lang="en-US">Amortization expense</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecurityDeposit" xlink:label="us-gaap_SecurityDeposit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecurityDeposit" xlink:to="us-gaap_SecurityDeposit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SecurityDeposit_lbl" xml:lang="en-US">Security Deposit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SecurityDeposit_lbl" xml:lang="en-US">Security deposits</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EscrowDeposit" xlink:label="us-gaap_EscrowDeposit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EscrowDeposit" xlink:to="us-gaap_EscrowDeposit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EscrowDeposit_lbl" xml:lang="en-US">Escrow Deposit</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EscrowDeposit_lbl" xml:lang="en-US">Escrow and other reserve funds</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_NJ" xlink:label="stpr_NJ" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_NJ" xlink:to="stpr_NJ_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="stpr_NJ_lbl" xml:lang="en-US">N [J]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="stpr_NJ_lbl" xml:lang="en-US">New Jersey [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_lbl" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_lbl" xml:lang="en-US">Total revenues</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_lbl" xml:lang="en-US">Disposal Group Including Discontinued Operation Operating Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense_lbl" xml:lang="en-US">Operating and other expenses</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense" xlink:to="us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense_lbl" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Interest Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense_lbl" xml:lang="en-US">Interest expense (net of interest income)</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnrealizedGainLossOnDispositionOfRentalProperty" xlink:label="cli_UnrealizedGainLossOnDispositionOfRentalProperty" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnrealizedGainLossOnDispositionOfRentalProperty" xlink:to="cli_UnrealizedGainLossOnDispositionOfRentalProperty_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnrealizedGainLossOnDispositionOfRentalProperty_lbl" xml:lang="en-US">Unrealized Gain Loss On Disposition Of Rental Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnrealizedGainLossOnDispositionOfRentalProperty_lbl" xml:lang="en-US">Unrealized Gain Loss On Disposition Of Rental Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnrealizedGainLossOnDispositionOfRentalProperty_lbl" xml:lang="en-US">Unrealized losses on disposition of rental property</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionOfAssets" xlink:label="cli_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionOfAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionOfAssets" xlink:to="cli_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionOfAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionOfAssets_lbl" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Gain Loss On Disposition Of Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionOfAssets_lbl" xml:lang="en-US">Disposal Group, Including Discontinued Operation, Gain Loss On Disposition Of Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_DisposalGroupIncludingDiscontinuedOperationGainLossOnDispositionOfAssets_lbl" xml:lang="en-US">Realized gains on disposition of rental property</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfRealEstatePropertiesHeldForSale" xlink:label="cli_NumberOfRealEstatePropertiesHeldForSale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfRealEstatePropertiesHeldForSale" xlink:to="cli_NumberOfRealEstatePropertiesHeldForSale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfRealEstatePropertiesHeldForSale_lbl" xml:lang="en-US">Number Of Real Estate Properties Held For Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfRealEstatePropertiesHeldForSale_lbl" xml:lang="en-US">Number Of Real Estate Properties Held For Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfRealEstatePropertiesHeldForSale_lbl" xml:lang="en-US">Number of properties held for sale</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateHeldforsale" xlink:label="us-gaap_RealEstateHeldforsale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateHeldforsale" xlink:to="us-gaap_RealEstateHeldforsale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateHeldforsale_lbl" xml:lang="en-US">Real Estate Held-for-sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateHeldforsale_lbl" xml:lang="en-US">Value of property held for sale</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="us-gaap_DebtInstrumentTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentTable_lbl" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="us-gaap_LongtermDebtTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xml:lang="en-US">Long-term Debt, Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="us-gaap_LongtermDebtTypeDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US">Longterm Debt Type [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US">Long-term Debt, Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreePointOneFiveZeroPercentSeniorUnsecuredNotesDueMayFifteenthTwoThousandTwentyThreeMember" xlink:label="cli_ThreePointOneFiveZeroPercentSeniorUnsecuredNotesDueMayFifteenthTwoThousandTwentyThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreePointOneFiveZeroPercentSeniorUnsecuredNotesDueMayFifteenthTwoThousandTwentyThreeMember" xlink:to="cli_ThreePointOneFiveZeroPercentSeniorUnsecuredNotesDueMayFifteenthTwoThousandTwentyThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreePointOneFiveZeroPercentSeniorUnsecuredNotesDueMayFifteenthTwoThousandTwentyThreeMember_lbl" xml:lang="en-US">3.150% Senior Unsecured Note, Due May 15, 2023 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreePointOneFiveZeroPercentSeniorUnsecuredNotesDueMayFifteenthTwoThousandTwentyThreeMember_lbl" xml:lang="en-US">Three Point One Five Zero Percent Senior Unsecured Notes Due May Fifteenth Two Thousand Twenty Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreePointOneFiveZeroPercentSeniorUnsecuredNotesDueMayFifteenthTwoThousandTwentyThreeMember_lbl" xml:lang="en-US">3.150% Senior Unsecured Note, Due May 15, 2023 [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="us-gaap_DebtInstrumentLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xml:lang="en-US">Debt Instrument [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US">Debt Instrument, Face Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US">Face amount of senior unsecured notes</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourPointSixZeroZeroPercentSeniorUnsecuredNotesDueJuneFifteenTwoThousandThirteenMember" xlink:label="cli_FourPointSixZeroZeroPercentSeniorUnsecuredNotesDueJuneFifteenTwoThousandThirteenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourPointSixZeroZeroPercentSeniorUnsecuredNotesDueJuneFifteenTwoThousandThirteenMember" xlink:to="cli_FourPointSixZeroZeroPercentSeniorUnsecuredNotesDueJuneFifteenTwoThousandThirteenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourPointSixZeroZeroPercentSeniorUnsecuredNotesDueJuneFifteenTwoThousandThirteenMember_lbl" xml:lang="en-US">4.600% Senior Unsecured Notes, due June 15, 2013</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourPointSixZeroZeroPercentSeniorUnsecuredNotesDueJuneFifteenTwoThousandThirteenMember_lbl" xml:lang="en-US">Four Point Six Zero Zero Percent Senior Unsecured Notes Due June Fifteen Two Thousand Thirteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourPointSixZeroZeroPercentSeniorUnsecuredNotesDueJuneFifteenTwoThousandThirteenMember_lbl" xml:lang="en-US">4.600% Senior Unsecured Notes, Due June 15, 2013 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueFebruaryFifteenTwoThousandFourteenMember" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueFebruaryFifteenTwoThousandFourteenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueFebruaryFifteenTwoThousandFourteenMember" xlink:to="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueFebruaryFifteenTwoThousandFourteenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueFebruaryFifteenTwoThousandFourteenMember_lbl" xml:lang="en-US">5.125% Senior Unsecured Notes, due February 15, 2014</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueFebruaryFifteenTwoThousandFourteenMember_lbl" xml:lang="en-US">Five Point One Two Five Percent Senior Unsecured Notes Due February Fifteen Two Thousand Fourteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueFebruaryFifteenTwoThousandFourteenMember_lbl" xml:lang="en-US">5.125% Senior Unsecured Notes, Due February 15, 2014 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandFifteenMember" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandFifteenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandFifteenMember" xlink:to="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandFifteenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandFifteenMember_lbl" xml:lang="en-US">5.125% Senior Unsecured Notes, due January 15, 2015</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandFifteenMember_lbl" xml:lang="en-US">Five Point One Two Five Percent Senior Unsecured Notes Due January Fifteen Two Thousand Fifteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FivePointOneTwoFivePercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandFifteenMember_lbl" xml:lang="en-US">5.125% Senior Unsecured Notes, Due January 15, 2015 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FivePointEightZeroZeroPercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandSixteenMember" xlink:label="cli_FivePointEightZeroZeroPercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandSixteenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FivePointEightZeroZeroPercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandSixteenMember" xlink:to="cli_FivePointEightZeroZeroPercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandSixteenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FivePointEightZeroZeroPercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandSixteenMember_lbl" xml:lang="en-US">5.800% Senior Unsecured Notes, due January 15, 2016</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FivePointEightZeroZeroPercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandSixteenMember_lbl" xml:lang="en-US">Five Point Eight Zero Zero Percent Senior Unsecured Notes Due January Fifteen Two Thousand Sixteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FivePointEightZeroZeroPercentSeniorUnsecuredNotesDueJanuaryFifteenTwoThousandSixteenMember_lbl" xml:lang="en-US">5.800% Senior Unsecured Notes, Due January 15, 2016 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoPointFiveZeroZeroPercentSeniorUnsecuredNotesDueDecemberFifteenTwoThousandSeventeenMember" xlink:label="cli_TwoPointFiveZeroZeroPercentSeniorUnsecuredNotesDueDecemberFifteenTwoThousandSeventeenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoPointFiveZeroZeroPercentSeniorUnsecuredNotesDueDecemberFifteenTwoThousandSeventeenMember" xlink:to="cli_TwoPointFiveZeroZeroPercentSeniorUnsecuredNotesDueDecemberFifteenTwoThousandSeventeenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoPointFiveZeroZeroPercentSeniorUnsecuredNotesDueDecemberFifteenTwoThousandSeventeenMember_lbl" xml:lang="en-US">Two Point Five Zero Zero Percent Senior Unsecured Notes Due December Fifteen Two Thousand Seventeen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoPointFiveZeroZeroPercentSeniorUnsecuredNotesDueDecemberFifteenTwoThousandSeventeenMember_lbl" xml:lang="en-US">Two Point Five Zero Zero Percent Senior Unsecured Notes Due December Fifteen Two Thousand Seventeen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoPointFiveZeroZeroPercentSeniorUnsecuredNotesDueDecemberFifteenTwoThousandSeventeenMember_lbl" xml:lang="en-US">2.500% Senior Unsecured Notes Due December 15, 2017 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenPointSevenFiveZeroPercentSeniorUnsecuredNotesDueAugustFifteenTwoThousandNineteenMember" xlink:label="cli_SevenPointSevenFiveZeroPercentSeniorUnsecuredNotesDueAugustFifteenTwoThousandNineteenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenPointSevenFiveZeroPercentSeniorUnsecuredNotesDueAugustFifteenTwoThousandNineteenMember" xlink:to="cli_SevenPointSevenFiveZeroPercentSeniorUnsecuredNotesDueAugustFifteenTwoThousandNineteenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenPointSevenFiveZeroPercentSeniorUnsecuredNotesDueAugustFifteenTwoThousandNineteenMember_lbl" xml:lang="en-US">7.750% Senior Unsecured Notes, due August 15, 2019</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenPointSevenFiveZeroPercentSeniorUnsecuredNotesDueAugustFifteenTwoThousandNineteenMember_lbl" xml:lang="en-US">Seven Point Seven Five Zero Percent Senior Unsecured Notes Due August Fifteen Two Thousand Nineteen [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenPointSevenFiveZeroPercentSeniorUnsecuredNotesDueAugustFifteenTwoThousandNineteenMember_lbl" xml:lang="en-US">7.750% Senior Unsecured Notes, Due August 15, 2019 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourPointFiveZeroZeroPercentSeniorUnsecuredNotesDueAprilEighteenTwoThousandTwentyTwoMember" xlink:label="cli_FourPointFiveZeroZeroPercentSeniorUnsecuredNotesDueAprilEighteenTwoThousandTwentyTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourPointFiveZeroZeroPercentSeniorUnsecuredNotesDueAprilEighteenTwoThousandTwentyTwoMember" xlink:to="cli_FourPointFiveZeroZeroPercentSeniorUnsecuredNotesDueAprilEighteenTwoThousandTwentyTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourPointFiveZeroZeroPercentSeniorUnsecuredNotesDueAprilEighteenTwoThousandTwentyTwoMember_lbl" xml:lang="en-US">Four Point Five Zero Zero Percent Senior Unsecured Notes Due April Eighteen Two Thousand Twenty Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourPointFiveZeroZeroPercentSeniorUnsecuredNotesDueAprilEighteenTwoThousandTwentyTwoMember_lbl" xml:lang="en-US">Four Point Five Zero Zero Percent Senior Unsecured Notes Due April Eighteen Two Thousand Twenty Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourPointFiveZeroZeroPercentSeniorUnsecuredNotesDueAprilEighteenTwoThousandTwentyTwoMember_lbl" xml:lang="en-US">4.500% Senior Unsecured Notes Due April 18, 2022 [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xml:lang="en-US">Debt Instrument, Interest Rate, Effective Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xml:lang="en-US">Effective Rate</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="us-gaap_LineOfCreditFacilityTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityTable" xlink:to="us-gaap_LineOfCreditFacilityTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityTable_lbl" xml:lang="en-US">Line of Credit Facility [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MoneyMarketLoanMember" xlink:label="cli_MoneyMarketLoanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MoneyMarketLoanMember" xlink:to="cli_MoneyMarketLoanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MoneyMarketLoanMember_lbl" xml:lang="en-US">Money Market Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MoneyMarketLoanMember_lbl" xml:lang="en-US">Money Market Loan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MoneyMarketLoanMember_lbl" xml:lang="en-US">Money Market Loan [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="us-gaap_LineOfCreditFacilityLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityLineItems" xlink:to="us-gaap_LineOfCreditFacilityLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xml:lang="en-US">Line of Credit Facility [Line Items]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LineOfCreditFacilityLendingInstitutionsNumber" xlink:label="cli_LineOfCreditFacilityLendingInstitutionsNumber" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LineOfCreditFacilityLendingInstitutionsNumber" xlink:to="cli_LineOfCreditFacilityLendingInstitutionsNumber_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LineOfCreditFacilityLendingInstitutionsNumber_lbl" xml:lang="en-US">Line of Credit Facility, Lending Institutions Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LineOfCreditFacilityLendingInstitutionsNumber_lbl" xml:lang="en-US">Line of Credit Facility, Lending Institutions Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LineOfCreditFacilityLendingInstitutionsNumber_lbl" xml:lang="en-US">Number of lending institutions</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LineOfCreditFacilityExpandableMaximumBorrowingCapacity" xlink:label="cli_LineOfCreditFacilityExpandableMaximumBorrowingCapacity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LineOfCreditFacilityExpandableMaximumBorrowingCapacity" xlink:to="cli_LineOfCreditFacilityExpandableMaximumBorrowingCapacity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LineOfCreditFacilityExpandableMaximumBorrowingCapacity_lbl" xml:lang="en-US">Line Of Credit Facility Expandable Maximum Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LineOfCreditFacilityExpandableMaximumBorrowingCapacity_lbl" xml:lang="en-US">Line Of Credit Facility Expandable Maximum Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LineOfCreditFacilityExpandableMaximumBorrowingCapacity_lbl" xml:lang="en-US">Expandable borrowing capacity under the credit facility</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityExpirationDate1" xlink:to="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xml:lang="en-US">Line of Credit Facility, Expiration Date</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1_lbl" xml:lang="en-US">Credit facility maturity date</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LineOfCreditFacilityBasisPointFacilityFee" xlink:label="cli_LineOfCreditFacilityBasisPointFacilityFee" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LineOfCreditFacilityBasisPointFacilityFee" xlink:to="cli_LineOfCreditFacilityBasisPointFacilityFee_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LineOfCreditFacilityBasisPointFacilityFee_lbl" xml:lang="en-US">Line Of Credit Facility Basis Point Facility Fee</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LineOfCreditFacilityBasisPointFacilityFee_lbl" xml:lang="en-US">Line Of Credit Facility Basis Point Facility Fee</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LineOfCreditFacilityBasisPointFacilityFee_lbl" xml:lang="en-US">Credit facility extension fee, basis points</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LineOfCreditFacilityBidFeatureCurrentBorrowingCapacity" xlink:label="cli_LineOfCreditFacilityBidFeatureCurrentBorrowingCapacity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LineOfCreditFacilityBidFeatureCurrentBorrowingCapacity" xlink:to="cli_LineOfCreditFacilityBidFeatureCurrentBorrowingCapacity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LineOfCreditFacilityBidFeatureCurrentBorrowingCapacity_lbl" xml:lang="en-US">Maximum borrowing amount under the line of credit facility competitive bid feature.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LineOfCreditFacilityBidFeatureCurrentBorrowingCapacity_lbl" xml:lang="en-US">Line Of Credit Facility Bid Feature Current Borrowing Capacity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LineOfCreditFacilityBidFeatureCurrentBorrowingCapacity_lbl" xml:lang="en-US">Line of credit facility, bid feature, current borrowing capacity</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentCovenantComplianceLeverageRatio" xlink:label="cli_DebtInstrumentCovenantComplianceLeverageRatio" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentCovenantComplianceLeverageRatio" xlink:to="cli_DebtInstrumentCovenantComplianceLeverageRatio_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentCovenantComplianceLeverageRatio_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Leverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentCovenantComplianceLeverageRatio_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Leverage Ratio</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentCovenantComplianceLeverageRatio_lbl" xml:lang="en-US">Leverage ratio</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentCovenantComplianceSecuredIndebtedness" xlink:label="cli_DebtInstrumentCovenantComplianceSecuredIndebtedness" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentCovenantComplianceSecuredIndebtedness" xlink:to="cli_DebtInstrumentCovenantComplianceSecuredIndebtedness_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentCovenantComplianceSecuredIndebtedness_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Secured Indebtedness</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentCovenantComplianceSecuredIndebtedness_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Secured Indebtedness</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentCovenantComplianceSecuredIndebtedness_lbl" xml:lang="en-US">Secured indebtedness</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentCovenantComplianceFixedChargeCoverage" xlink:label="cli_DebtInstrumentCovenantComplianceFixedChargeCoverage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentCovenantComplianceFixedChargeCoverage" xlink:to="cli_DebtInstrumentCovenantComplianceFixedChargeCoverage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentCovenantComplianceFixedChargeCoverage_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Fixed Charge Coverage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentCovenantComplianceFixedChargeCoverage_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Fixed Charge Coverage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentCovenantComplianceFixedChargeCoverage_lbl" xml:lang="en-US">Fixed charge coverage ratio</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentCovenantComplianceUnsecuredIndebtedness" xlink:label="cli_DebtInstrumentCovenantComplianceUnsecuredIndebtedness" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentCovenantComplianceUnsecuredIndebtedness" xlink:to="cli_DebtInstrumentCovenantComplianceUnsecuredIndebtedness_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentCovenantComplianceUnsecuredIndebtedness_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Unsecured Indebtedness</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentCovenantComplianceUnsecuredIndebtedness_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Unsecured Indebtedness</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentCovenantComplianceUnsecuredIndebtedness_lbl" xml:lang="en-US">Unsecured indebtedness</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentCovenantComplianceUnencumberedPropertyInterestCoverage" xlink:label="cli_DebtInstrumentCovenantComplianceUnencumberedPropertyInterestCoverage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentCovenantComplianceUnencumberedPropertyInterestCoverage" xlink:to="cli_DebtInstrumentCovenantComplianceUnencumberedPropertyInterestCoverage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentCovenantComplianceUnencumberedPropertyInterestCoverage_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Unencumbered Property Interest Coverage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentCovenantComplianceUnencumberedPropertyInterestCoverage_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Unencumbered Property Interest Coverage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentCovenantComplianceUnencumberedPropertyInterestCoverage_lbl" xml:lang="en-US">Unencumbered property interest coverage</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtInstrumentCovenantComplianceInvestmentLimitationsAsPercentageOfTotalCapitalization" xlink:label="cli_DebtInstrumentCovenantComplianceInvestmentLimitationsAsPercentageOfTotalCapitalization" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtInstrumentCovenantComplianceInvestmentLimitationsAsPercentageOfTotalCapitalization" xlink:to="cli_DebtInstrumentCovenantComplianceInvestmentLimitationsAsPercentageOfTotalCapitalization_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtInstrumentCovenantComplianceInvestmentLimitationsAsPercentageOfTotalCapitalization_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Investment Limitations As Percentage Of Total Capitalization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtInstrumentCovenantComplianceInvestmentLimitationsAsPercentageOfTotalCapitalization_lbl" xml:lang="en-US">Debt Instrument Covenant Compliance, Investment Limitations As Percentage Of Total Capitalization</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtInstrumentCovenantComplianceInvestmentLimitationsAsPercentageOfTotalCapitalization_lbl" xml:lang="en-US">Investment limitations as a percentage of total capitalization</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityCovenantTerms" xlink:label="us-gaap_LineOfCreditFacilityCovenantTerms" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityCovenantTerms" xlink:to="us-gaap_LineOfCreditFacilityCovenantTerms_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityCovenantTerms_lbl" xml:lang="en-US">Line of Credit Facility, Covenant Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LineOfCreditFacilityCovenantTerms_lbl" xml:lang="en-US">Terms of the unsecured facility</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityDividendRestrictions" xlink:label="us-gaap_LineOfCreditFacilityDividendRestrictions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityDividendRestrictions" xlink:to="us-gaap_LineOfCreditFacilityDividendRestrictions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityDividendRestrictions_lbl" xml:lang="en-US">Line of Credit Facility, Dividend Restrictions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LineOfCreditFacilityDividendRestrictions_lbl" xml:lang="en-US">Terms of dividend restriction</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCredit" xlink:label="us-gaap_LineOfCredit" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US">Revolving credit facility</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LineOfCredit_lbl" xml:lang="en-US">Outstanding borrowings under the facility</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LineOfCreditFacilityMaturityPeriod" xlink:label="cli_LineOfCreditFacilityMaturityPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LineOfCreditFacilityMaturityPeriod" xlink:to="cli_LineOfCreditFacilityMaturityPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LineOfCreditFacilityMaturityPeriod_lbl" xml:lang="en-US">Line of Credit Facility, Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LineOfCreditFacilityMaturityPeriod_lbl" xml:lang="en-US">Line of Credit Facility, Maturity Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LineOfCreditFacilityMaturityPeriod_lbl" xml:lang="en-US">Maturity period of the unsecured borrowing</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CreditRatingMoodysAndStandardAndPoorsAxis" xlink:label="cli_CreditRatingMoodysAndStandardAndPoorsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CreditRatingMoodysAndStandardAndPoorsAxis" xlink:to="cli_CreditRatingMoodysAndStandardAndPoorsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CreditRatingMoodysAndStandardAndPoorsAxis_lbl" xml:lang="en-US">Credit Rating, Moody's And Standard &amp; Poor's [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CreditRatingMoodysAndStandardAndPoorsAxis_lbl" xml:lang="en-US">Credit Rating, Moody's And Standard &amp; Poor's [Axis]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CreditRatingMoodysAndStandardPoorsDomain" xlink:label="cli_CreditRatingMoodysAndStandardPoorsDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CreditRatingMoodysAndStandardPoorsDomain" xlink:to="cli_CreditRatingMoodysAndStandardPoorsDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CreditRatingMoodysAndStandardPoorsDomain_lbl" xml:lang="en-US">Credit Rating, Moody's And Standard &amp; Poor's [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CreditRatingMoodysAndStandardPoorsDomain_lbl" xml:lang="en-US">Credit Rating Moodys And Standard Poors [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CreditRatingMoodysAndStandardPoorsDomain_lbl" xml:lang="en-US">Credit Rating [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NoRatingsOrLessThanBbbMinusBaaThreeMember" xlink:label="cli_NoRatingsOrLessThanBbbMinusBaaThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NoRatingsOrLessThanBbbMinusBaaThreeMember" xlink:to="cli_NoRatingsOrLessThanBbbMinusBaaThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NoRatingsOrLessThanBbbMinusBaaThreeMember_lbl" xml:lang="en-US">No Ratings Or Less Than BBB Minus, Baa Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NoRatingsOrLessThanBbbMinusBaaThreeMember_lbl" xml:lang="en-US">No Ratings Or Less Than Bbb Minus Baa Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NoRatingsOrLessThanBbbMinusBaaThreeMember_lbl" xml:lang="en-US">No Ratings Or Less Than BBB-/Baa3 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BbbMinusOrBaaThreeMember" xlink:label="cli_BbbMinusOrBaaThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BbbMinusOrBaaThreeMember" xlink:to="cli_BbbMinusOrBaaThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BbbMinusOrBaaThreeMember_lbl" xml:lang="en-US">BBB Minus Or Baa Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BbbMinusOrBaaThreeMember_lbl" xml:lang="en-US">Bbb Minus Or Baa Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BbbMinusOrBaaThreeMember_lbl" xml:lang="en-US">BBB- Or Baa3 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BbbOrBaaTwoCurrentMember" xlink:label="cli_BbbOrBaaTwoCurrentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BbbOrBaaTwoCurrentMember" xlink:to="cli_BbbOrBaaTwoCurrentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BbbOrBaaTwoCurrentMember_lbl" xml:lang="en-US">BBB Or Baa Two Current [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BbbOrBaaTwoCurrentMember_lbl" xml:lang="en-US">Bbb Or Baa Two Current [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BbbOrBaaTwoCurrentMember_lbl" xml:lang="en-US">BBB Or Baa2 (Current) [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BbbPlusOrBaaOneMember" xlink:label="cli_BbbPlusOrBaaOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BbbPlusOrBaaOneMember" xlink:to="cli_BbbPlusOrBaaOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BbbPlusOrBaaOneMember_lbl" xml:lang="en-US">BBB Plus Or Baa One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BbbPlusOrBaaOneMember_lbl" xml:lang="en-US">Bbb Plus Or Baa One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BbbPlusOrBaaOneMember_lbl" xml:lang="en-US">BBB+ Or Baa1 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MinusOrThreeOrHigherMember" xlink:label="cli_MinusOrThreeOrHigherMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MinusOrThreeOrHigherMember" xlink:to="cli_MinusOrThreeOrHigherMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MinusOrThreeOrHigherMember_lbl" xml:lang="en-US">A Minus Or A Three Or Higher [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MinusOrThreeOrHigherMember_lbl" xml:lang="en-US">Minus Or Three Or Higher [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MinusOrThreeOrHigherMember_lbl" xml:lang="en-US">A-Or A3 Or Higher [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentCreditRating" xlink:label="us-gaap_DebtInstrumentCreditRating" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCreditRating" xlink:to="us-gaap_DebtInstrumentCreditRating_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCreditRating_lbl" xml:lang="en-US">Debt Instrument, Credit Rating</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DebtInstrumentCreditRating_lbl" xml:lang="en-US">Unsecured Debt Ratings</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:to="us-gaap_LineOfCreditFacilityCommitmentFeePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeePercentage_lbl" xml:lang="en-US">Line of Credit Facility, Basis Points of Facility Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LineOfCreditFacilityCommitmentFeePercentage_lbl" xml:lang="en-US">Facility Fee Basis Points</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RevolvingCreditFacilityAndOtherVariableRateMortgageDebtMember" xlink:label="cli_RevolvingCreditFacilityAndOtherVariableRateMortgageDebtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RevolvingCreditFacilityAndOtherVariableRateMortgageDebtMember" xlink:to="cli_RevolvingCreditFacilityAndOtherVariableRateMortgageDebtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RevolvingCreditFacilityAndOtherVariableRateMortgageDebtMember_lbl" xml:lang="en-US">Revolving Credit Facility and Other Variable Rate Mortgage Debt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RevolvingCreditFacilityAndOtherVariableRateMortgageDebtMember_lbl" xml:lang="en-US">Revolving Credit Facility And Other Variable Rate Mortgage Debt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RevolvingCreditFacilityAndOtherVariableRateMortgageDebtMember_lbl" xml:lang="en-US">Revolving Credit Facility Borrowing And Other Variable Rate Mortgage Debt [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FixedRateDebtAndOtherObligationsMember" xlink:label="cli_FixedRateDebtAndOtherObligationsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FixedRateDebtAndOtherObligationsMember" xlink:to="cli_FixedRateDebtAndOtherObligationsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FixedRateDebtAndOtherObligationsMember_lbl" xml:lang="en-US">Fixed Rate Debt and Other Obligations [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FixedRateDebtAndOtherObligationsMember_lbl" xml:lang="en-US">Fixed Rate Debt And Other Obligations [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FixedRateDebtAndOtherObligationsMember_lbl" xml:lang="en-US">Fixed Rate Debt And Other Obligations [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfPropertiesWithEncumberedCompanyMortgages" xlink:label="cli_NumberOfPropertiesWithEncumberedCompanyMortgages" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfPropertiesWithEncumberedCompanyMortgages" xlink:to="cli_NumberOfPropertiesWithEncumberedCompanyMortgages_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfPropertiesWithEncumberedCompanyMortgages_lbl" xml:lang="en-US">Number Of Properties With Encumbered Company Mortgages</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfPropertiesWithEncumberedCompanyMortgages_lbl" xml:lang="en-US">Number Of Properties With Encumbered Company Mortgages</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfPropertiesWithEncumberedCompanyMortgages_lbl" xml:lang="en-US">Number of properties with encumbered company mortgages</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MortgagePropertyCarryingValue" xlink:label="cli_MortgagePropertyCarryingValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MortgagePropertyCarryingValue" xlink:to="cli_MortgagePropertyCarryingValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MortgagePropertyCarryingValue_lbl" xml:lang="en-US">Carrying Value of the Mortgaged Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MortgagePropertyCarryingValue_lbl" xml:lang="en-US">Mortgage Property, Carrying Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MortgagePropertyCarryingValue_lbl" xml:lang="en-US">Book value of encumbered properties</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestPaid" xlink:label="us-gaap_InterestPaid" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaid" xlink:to="us-gaap_InterestPaid_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US">Interest Paid</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestPaid_lbl" xml:lang="en-US">Cash paid for interest</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InterestCostsCapitalized" xlink:label="us-gaap_InterestCostsCapitalized" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestCostsCapitalized" xlink:to="us-gaap_InterestCostsCapitalized_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xml:lang="en-US">Interest Costs, Capitalized During Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xml:lang="en-US">Interest capitalized</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebt" xlink:label="us-gaap_LongTermDebt" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US">Long-term Debt</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US">Total indebtedness</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LongTermDebt_lbl" xml:lang="en-US">Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongtermDebtWeightedAverageInterestRate" xlink:label="us-gaap_LongtermDebtWeightedAverageInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtWeightedAverageInterestRate" xlink:to="us-gaap_LongtermDebtWeightedAverageInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongtermDebtWeightedAverageInterestRate_lbl" xml:lang="en-US">Long-term Debt, Weighted Average Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongtermDebtWeightedAverageInterestRate_lbl" xml:lang="en-US">Total indebtedness, weighted average interest rate</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiftyOneImcloneMember" xlink:label="cli_FiftyOneImcloneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiftyOneImcloneMember" xlink:to="cli_FiftyOneImcloneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiftyOneImcloneMember_lbl" xml:lang="en-US">51 Imclone</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiftyOneImcloneMember_lbl" xml:lang="en-US">Fifty One Imclone [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiftyOneImcloneMember_lbl" xml:lang="en-US">51 Imclone [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixThousandThreeHundredFiveIvyLaneMember" xlink:label="cli_SixThousandThreeHundredFiveIvyLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixThousandThreeHundredFiveIvyLaneMember" xlink:to="cli_SixThousandThreeHundredFiveIvyLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixThousandThreeHundredFiveIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Three Hundred Five Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixThousandThreeHundredFiveIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Three Hundred Five Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixThousandThreeHundredFiveIvyLaneMember_lbl" xml:lang="en-US">6305 Ivy Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NineThousandTwoHundredEdmonstonRoadMember" xlink:label="cli_NineThousandTwoHundredEdmonstonRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NineThousandTwoHundredEdmonstonRoadMember" xlink:to="cli_NineThousandTwoHundredEdmonstonRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NineThousandTwoHundredEdmonstonRoadMember_lbl" xml:lang="en-US">Nine Thousand Two Hundred Edmonston Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NineThousandTwoHundredEdmonstonRoadMember_lbl" xml:lang="en-US">Nine Thousand Two Hundred Edmonston Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NineThousandTwoHundredEdmonstonRoadMember_lbl" xml:lang="en-US">9200 Edmonston Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredNinetyFiveWestPassaicMember" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredNinetyFiveWestPassaicMember" xlink:to="cli_ThreeHundredNinetyFiveWestPassaicMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicMember_lbl" xml:lang="en-US">Three Hundred Ninety Five West Passaic [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicMember_lbl" xml:lang="en-US">Three Hundred Ninety Five West Passaic [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicMember_lbl" xml:lang="en-US">395 West Passaic [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixThousandThreeHundredOneIvyLaneMember" xlink:label="cli_SixThousandThreeHundredOneIvyLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixThousandThreeHundredOneIvyLaneMember" xlink:to="cli_SixThousandThreeHundredOneIvyLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixThousandThreeHundredOneIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Three Hundred One Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixThousandThreeHundredOneIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Three Hundred One Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixThousandThreeHundredOneIvyLaneMember_lbl" xml:lang="en-US">6301 Ivy Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirtyFiveWaterviewBoulevardMember" xlink:label="cli_ThirtyFiveWaterviewBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirtyFiveWaterviewBoulevardMember" xlink:to="cli_ThirtyFiveWaterviewBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirtyFiveWaterviewBoulevardMember_lbl" xml:lang="en-US">Thirty Five Waterview Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirtyFiveWaterviewBoulevardMember_lbl" xml:lang="en-US">Thirty Five Waterview Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirtyFiveWaterviewBoulevardMember_lbl" xml:lang="en-US">35 Waterview Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixBeckerEightyFiveLivingstonSeventyFiveLivingstonAndTwentyWaterviewMember" xlink:label="cli_SixBeckerEightyFiveLivingstonSeventyFiveLivingstonAndTwentyWaterviewMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixBeckerEightyFiveLivingstonSeventyFiveLivingstonAndTwentyWaterviewMember" xlink:to="cli_SixBeckerEightyFiveLivingstonSeventyFiveLivingstonAndTwentyWaterviewMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixBeckerEightyFiveLivingstonSeventyFiveLivingstonAndTwentyWaterviewMember_lbl" xml:lang="en-US">6 Becker, 85 Livingston, 75 Livingston &amp; 20 Waterview</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixBeckerEightyFiveLivingstonSeventyFiveLivingstonAndTwentyWaterviewMember_lbl" xml:lang="en-US">Six Becker Eighty Five Livingston Seventy Five Livingston And Twenty Waterview [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixBeckerEightyFiveLivingstonSeventyFiveLivingstonAndTwentyWaterviewMember_lbl" xml:lang="en-US">6 Becker, 85 Livingston, 75 Livingston &amp; 20 Waterview [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourSylvanMember" xlink:label="cli_FourSylvanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourSylvanMember" xlink:to="cli_FourSylvanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourSylvanMember_lbl" xml:lang="en-US">4 Sylvan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourSylvanMember_lbl" xml:lang="en-US">Four Sylvan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourSylvanMember_lbl" xml:lang="en-US">4 Sylvan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TenIndependenceMember" xlink:label="cli_TenIndependenceMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TenIndependenceMember" xlink:to="cli_TenIndependenceMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TenIndependenceMember_lbl" xml:lang="en-US">10 Independence</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TenIndependenceMember_lbl" xml:lang="en-US">Ten Independence [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TenIndependenceMember_lbl" xml:lang="en-US">10 Independence [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortImperialSouthMember" xlink:label="cli_PortImperialSouthMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortImperialSouthMember" xlink:to="cli_PortImperialSouthMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortImperialSouthMember_lbl" xml:lang="en-US">Port Imperial South [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortImperialSouthMember_lbl" xml:lang="en-US">Port Imperial South [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortImperialSouthMember_lbl" xml:lang="en-US">Port Imperial South [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourBeckerMember" xlink:label="cli_FourBeckerMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourBeckerMember" xlink:to="cli_FourBeckerMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourBeckerMember_lbl" xml:lang="en-US">4 Becker</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourBeckerMember_lbl" xml:lang="en-US">Four Becker [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourBeckerMember_lbl" xml:lang="en-US">4 Becker [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveBeckerMember" xlink:label="cli_FiveBeckerMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveBeckerMember" xlink:to="cli_FiveBeckerMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveBeckerMember_lbl" xml:lang="en-US">5 Becker</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveBeckerMember_lbl" xml:lang="en-US">Five Becker [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveBeckerMember_lbl" xml:lang="en-US">5 Becker [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredTenClayMember" xlink:label="cli_TwoHundredTenClayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredTenClayMember" xlink:to="cli_TwoHundredTenClayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredTenClayMember_lbl" xml:lang="en-US">Two Hundred Ten Clay [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredTenClayMember_lbl" xml:lang="en-US">Two Hundred Ten Clay [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredTenClayMember_lbl" xml:lang="en-US">210 Clay [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_VariousMember" xlink:label="cli_VariousMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_VariousMember" xlink:to="cli_VariousMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_VariousMember_lbl" xml:lang="en-US">Various Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_VariousMember_lbl" xml:lang="en-US">Various [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_VariousMember_lbl" xml:lang="en-US">Various [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwentyThreeMainStreetMember" xlink:label="cli_TwentyThreeMainStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwentyThreeMainStreetMember" xlink:to="cli_TwentyThreeMainStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwentyThreeMainStreetMember_lbl" xml:lang="en-US">Twenty Three Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwentyThreeMainStreetMember_lbl" xml:lang="en-US">Twenty Three Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwentyThreeMainStreetMember_lbl" xml:lang="en-US">23 Main Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HarborsidePlazaFiveMember" xlink:label="cli_HarborsidePlazaFiveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HarborsidePlazaFiveMember" xlink:to="cli_HarborsidePlazaFiveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HarborsidePlazaFiveMember_lbl" xml:lang="en-US">Harborside Plaza 5</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HarborsidePlazaFiveMember_lbl" xml:lang="en-US">Harborside Plaza Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HarborsidePlazaFiveMember_lbl" xml:lang="en-US">Harborside Plaza 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredThirtyThreeCanoeBrookRoadMember" xlink:label="cli_TwoHundredThirtyThreeCanoeBrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredThirtyThreeCanoeBrookRoadMember" xlink:to="cli_TwoHundredThirtyThreeCanoeBrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredThirtyThreeCanoeBrookRoadMember_lbl" xml:lang="en-US">Two Hundred Thirty Three Canoe Brook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredThirtyThreeCanoeBrookRoadMember_lbl" xml:lang="en-US">Two Hundred Thirty Three Canoe Brook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredThirtyThreeCanoeBrookRoadMember_lbl" xml:lang="en-US">233 Canoe Brook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredWalnutAvenueMember" xlink:label="cli_OneHundredWalnutAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredWalnutAvenueMember" xlink:to="cli_OneHundredWalnutAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredWalnutAvenueMember_lbl" xml:lang="en-US">100 Walnut Avenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredWalnutAvenueMember_lbl" xml:lang="en-US">One Hundred Walnut Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredWalnutAvenueMember_lbl" xml:lang="en-US">100 Walnut Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneRiverCenterMember" xlink:label="cli_OneRiverCenterMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneRiverCenterMember" xlink:to="cli_OneRiverCenterMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneRiverCenterMember_lbl" xml:lang="en-US">One River Center</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneRiverCenterMember_lbl" xml:lang="en-US">One River Center [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneRiverCenterMember_lbl" xml:lang="en-US">One River Center [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SecuredDebtNameOfProperty" xlink:label="cli_SecuredDebtNameOfProperty" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SecuredDebtNameOfProperty" xlink:to="cli_SecuredDebtNameOfProperty_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SecuredDebtNameOfProperty_lbl" xml:lang="en-US">Secured Debt, Name of the Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SecuredDebtNameOfProperty_lbl" xml:lang="en-US">Secured Debt, Name of the Property</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SecuredDebtNameOfProperty_lbl" xml:lang="en-US">Property Name</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SecuredDebtLendingInstitution" xlink:label="cli_SecuredDebtLendingInstitution" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SecuredDebtLendingInstitution" xlink:to="cli_SecuredDebtLendingInstitution_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SecuredDebtLendingInstitution_lbl" xml:lang="en-US">Secured Debt, Lending Institution</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SecuredDebtLendingInstitution_lbl" xml:lang="en-US">Secured Debt, Lending Institution</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SecuredDebtLendingInstitution_lbl" xml:lang="en-US">Lender</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LiborInterestRate" xlink:label="cli_LiborInterestRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LiborInterestRate" xlink:to="cli_LiborInterestRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LiborInterestRate_lbl" xml:lang="en-US">Libor Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LiborInterestRate_lbl" xml:lang="en-US">Libor Interest Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LiborInterestRate_lbl" xml:lang="en-US">LIBOR</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentageOfLeasedPropertyOccupied" xlink:label="cli_PercentageOfLeasedPropertyOccupied" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentageOfLeasedPropertyOccupied" xlink:to="cli_PercentageOfLeasedPropertyOccupied_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentageOfLeasedPropertyOccupied_lbl" xml:lang="en-US">Percentage Of Leased Property Occupied</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentageOfLeasedPropertyOccupied_lbl" xml:lang="en-US">Percentage Of Leased Property Occupied</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentageOfLeasedPropertyOccupied_lbl" xml:lang="en-US">Percentage of leased property occupied</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationYearOne" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearOne" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationYearOne" xlink:to="cli_DebtDiscountPremiumFutureAmortizationYearOne_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearOne_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year One</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearOne_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year One</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearOne_lbl" xml:lang="en-US">Scheduled Amortization, 2014</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationYearTwo" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationYearTwo" xlink:to="cli_DebtDiscountPremiumFutureAmortizationYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearTwo_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearTwo_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearTwo_lbl" xml:lang="en-US">Scheduled Amortization, 2015</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationYearThree" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationYearThree" xlink:to="cli_DebtDiscountPremiumFutureAmortizationYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearThree_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearThree_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearThree_lbl" xml:lang="en-US">Scheduled Amortization, 2016</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationYearFour" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationYearFour" xlink:to="cli_DebtDiscountPremiumFutureAmortizationYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFour_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFour_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFour_lbl" xml:lang="en-US">Scheduled Amortization, 2017</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationYearFive" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationYearFive" xlink:to="cli_DebtDiscountPremiumFutureAmortizationYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFive_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFive_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationYearFive_lbl" xml:lang="en-US">Scheduled Amortization, 2018</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationThereafter" xlink:label="cli_DebtDiscountPremiumFutureAmortizationThereafter" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationThereafter" xlink:to="cli_DebtDiscountPremiumFutureAmortizationThereafter_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationThereafter_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Thereafter</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationThereafter_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Thereafter</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationThereafter_lbl" xml:lang="en-US">Scheduled Amortization, Thereafter</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationGross" xlink:label="cli_DebtDiscountPremiumFutureAmortizationGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationGross" xlink:to="cli_DebtDiscountPremiumFutureAmortizationGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationGross_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationGross_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationGross_lbl" xml:lang="en-US">Scheduled Amortization, Sub-total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedDiscount" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xml:lang="en-US">Debt Instrument, Unamortized Discount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xml:lang="en-US">Adjustment for unamortized debt discount/premium and mark-to-market, net, as of December 31, 2013</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DebtDiscountPremiumFutureAmortizationNet" xlink:label="cli_DebtDiscountPremiumFutureAmortizationNet" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DebtDiscountPremiumFutureAmortizationNet" xlink:to="cli_DebtDiscountPremiumFutureAmortizationNet_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DebtDiscountPremiumFutureAmortizationNet_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DebtDiscountPremiumFutureAmortizationNet_lbl" xml:lang="en-US">Debt Discount Premium Future Amortization Net</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_DebtDiscountPremiumFutureAmortizationNet_lbl" xml:lang="en-US">Scheduled Ammortization, Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xml:lang="en-US">Principal Maturities, 2014</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US">Principal Maturities, 2015</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US">Principal Maturities, 2016</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xml:lang="en-US">Principal Maturities, 2017</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xml:lang="en-US">Principal Maturities, 2018</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal after Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US">Principal Maturities, Thereafter</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtMaturitiesRepaymentsOfPrincipal" xlink:label="cli_LongTermDebtMaturitiesRepaymentsOfPrincipal" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtMaturitiesRepaymentsOfPrincipal" xlink:to="cli_LongTermDebtMaturitiesRepaymentsOfPrincipal_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtMaturitiesRepaymentsOfPrincipal_lbl" xml:lang="en-US">Long Term Debt Maturities, Repayments Of Principal</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtMaturitiesRepaymentsOfPrincipal_lbl" xml:lang="en-US">Long Term Debt Maturities, Repayments Of Principal</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtMaturitiesRepaymentsOfPrincipal_lbl" xml:lang="en-US">Principal Maturities, Total</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearOne" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearOne" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearOne" xlink:to="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearOne_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearOne_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year One</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearOne_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year One</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearOne_lbl" xml:lang="en-US">Total, 2014</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearTwo" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearTwo" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearTwo" xlink:to="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearTwo_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearTwo_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearTwo_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Two</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearTwo_lbl" xml:lang="en-US">Total, 2015</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearThree" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearThree" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearThree" xlink:to="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearThree_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearThree_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearThree_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Three</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearThree_lbl" xml:lang="en-US">Total, 2016</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFour" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFour" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFour" xlink:to="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFour_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFour_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFour_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Four</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFour_lbl" xml:lang="en-US">Total, 2017</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFive" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFive" xlink:to="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFive_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFive_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalYearFive_lbl" xml:lang="en-US">Total, 2018</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalAfterYearFive" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalAfterYearFive" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalAfterYearFive" xlink:to="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalAfterYearFive_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, After Year Five</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US">Total, Thereafter</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalGross" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalGross" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalGross" xlink:to="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalGross_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalGross_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalGross_lbl" xml:lang="en-US">Long Term Debt, Amortization And Repayments Of Principal, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="cli_LongTermDebtAmortizationAndRepaymentsOfPrincipalGross_lbl" xml:lang="en-US">Total, Sub-total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualPostretirementBenefitsTable" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualPostretirementBenefitsTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualPostretirementBenefitsTable" xlink:to="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualPostretirementBenefitsTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualPostretirementBenefitsTable_lbl" xml:lang="en-US">Schedule of Deferred Compensation Arrangement with Individual, Postretirement Benefits [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AwardTypeAxis_lbl" xml:lang="en-US">Award Type [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US">Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US">Award Type [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DeferredRetirementCompensationUnitsMember" xlink:label="cli_DeferredRetirementCompensationUnitsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DeferredRetirementCompensationUnitsMember" xlink:to="cli_DeferredRetirementCompensationUnitsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DeferredRetirementCompensationUnitsMember_lbl" xml:lang="en-US">Deferred Retirement Compensation Units [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DeferredRetirementCompensationUnitsMember_lbl" xml:lang="en-US">Deferred Retirement Compensation Units [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DeferredRetirementCompensationUnitsMember_lbl" xml:lang="en-US">Deferred Retirement Compensation Units [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AdditionalStockUnitsMember" xlink:label="cli_AdditionalStockUnitsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AdditionalStockUnitsMember" xlink:to="cli_AdditionalStockUnitsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AdditionalStockUnitsMember_lbl" xml:lang="en-US">Additional Stock Units [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AdditionalStockUnitsMember_lbl" xml:lang="en-US">Additional Stock Units [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AdditionalStockUnitsMember_lbl" xml:lang="en-US">Additional Stock Units [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AdditionalDividendStockUnitsMember" xlink:label="cli_AdditionalDividendStockUnitsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AdditionalDividendStockUnitsMember" xlink:to="cli_AdditionalDividendStockUnitsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AdditionalDividendStockUnitsMember_lbl" xml:lang="en-US">Additional Dividend Stock Units [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AdditionalDividendStockUnitsMember_lbl" xml:lang="en-US">Additional Dividend Stock Units [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AdditionalDividendStockUnitsMember_lbl" xml:lang="en-US">Additional Dividend Stock Units [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="us-gaap_TitleOfIndividualAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TitleOfIndividualAxis" xlink:to="us-gaap_TitleOfIndividualAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TitleOfIndividualAxis_lbl" xml:lang="en-US">Title of Individual [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xml:lang="en-US">Title Of Individual With Relationship To Entity [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xml:lang="en-US">Title of Individual with Relationship to Entity [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MessieurHershMember" xlink:label="cli_MessieurHershMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MessieurHershMember" xlink:to="cli_MessieurHershMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MessieurHershMember_lbl" xml:lang="en-US">Messieur Hersh [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MessieurHershMember_lbl" xml:lang="en-US">Messieur Hersh [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MessieurHershMember_lbl" xml:lang="en-US">Messr Hersh [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MessieurLefkowitzMember" xlink:label="cli_MessieurLefkowitzMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MessieurLefkowitzMember" xlink:to="cli_MessieurLefkowitzMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MessieurLefkowitzMember_lbl" xml:lang="en-US">Messieur Lefkowitz [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MessieurLefkowitzMember_lbl" xml:lang="en-US">Messieur Lefkowitz [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MessieurLefkowitzMember_lbl" xml:lang="en-US">Messr Lefkowitz [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MessieurThomasMember" xlink:label="cli_MessieurThomasMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MessieurThomasMember" xlink:to="cli_MessieurThomasMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MessieurThomasMember_lbl" xml:lang="en-US">Messieur Thomas [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MessieurThomasMember_lbl" xml:lang="en-US">Messieur Thomas [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MessieurThomasMember_lbl" xml:lang="en-US">Messr Thomas [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsLineItems" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsLineItems" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsLineItems_lbl" xml:lang="en-US">Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SavingsRetirementPlanEmployeeMinimumSubscriptionRate" xlink:label="cli_SavingsRetirementPlanEmployeeMinimumSubscriptionRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SavingsRetirementPlanEmployeeMinimumSubscriptionRate" xlink:to="cli_SavingsRetirementPlanEmployeeMinimumSubscriptionRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SavingsRetirementPlanEmployeeMinimumSubscriptionRate_lbl" xml:lang="en-US">Savings Retirement Plan Employee Minimum Subscription Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SavingsRetirementPlanEmployeeMinimumSubscriptionRate_lbl" xml:lang="en-US">Savings Retirement Plan Employee Minimum Subscription Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SavingsRetirementPlanEmployeeMinimumSubscriptionRate_lbl" xml:lang="en-US">Minimum employee subscription rate, percentage of compensation</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SavingsRetirementPlanEmployeeMaximumSubscriptionRate" xlink:label="cli_SavingsRetirementPlanEmployeeMaximumSubscriptionRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SavingsRetirementPlanEmployeeMaximumSubscriptionRate" xlink:to="cli_SavingsRetirementPlanEmployeeMaximumSubscriptionRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SavingsRetirementPlanEmployeeMaximumSubscriptionRate_lbl" xml:lang="en-US">Savings Retirement Plan Employee Maximum Subscription Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SavingsRetirementPlanEmployeeMaximumSubscriptionRate_lbl" xml:lang="en-US">Savings Retirement Plan Employee Maximum Subscription Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SavingsRetirementPlanEmployeeMaximumSubscriptionRate_lbl" xml:lang="en-US">Maximum employee subscription rate, percentage of compensation</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EmployeePreTaxContributionsVestedPercent" xlink:label="cli_EmployeePreTaxContributionsVestedPercent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EmployeePreTaxContributionsVestedPercent" xlink:to="cli_EmployeePreTaxContributionsVestedPercent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EmployeePreTaxContributionsVestedPercent_lbl" xml:lang="en-US">Employee pre-tax contributions vested percent.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EmployeePreTaxContributionsVestedPercent_lbl" xml:lang="en-US">Employee Pre Tax Contributions Vested Percent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EmployeePreTaxContributionsVestedPercent_lbl" xml:lang="en-US">Employee pre-tax contributions vested percentage</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SavingsRetirementPlanVestingPeriod" xlink:label="cli_SavingsRetirementPlanVestingPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SavingsRetirementPlanVestingPeriod" xlink:to="cli_SavingsRetirementPlanVestingPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SavingsRetirementPlanVestingPeriod_lbl" xml:lang="en-US">Savings Retirement Plan Vesting Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SavingsRetirementPlanVestingPeriod_lbl" xml:lang="en-US">Savings Retirement Plan Vesting Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SavingsRetirementPlanVestingPeriod_lbl" xml:lang="en-US">Employer contribution vesting period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_VestingRate" xlink:label="cli_VestingRate" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_VestingRate" xlink:to="cli_VestingRate_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_VestingRate_lbl" xml:lang="en-US">Vesting rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_VestingRate_lbl" xml:lang="en-US">Vesting Rate</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_VestingRate_lbl" xml:lang="en-US">Vesting rate</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PercentVestedAfterTotalServicePeriod" xlink:label="cli_PercentVestedAfterTotalServicePeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PercentVestedAfterTotalServicePeriod" xlink:to="cli_PercentVestedAfterTotalServicePeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PercentVestedAfterTotalServicePeriod_lbl" xml:lang="en-US">Percent vested after total service period.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PercentVestedAfterTotalServicePeriod_lbl" xml:lang="en-US">Percent Vested After Total Service Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PercentVestedAfterTotalServicePeriod_lbl" xml:lang="en-US">Percentage vested after total service period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SavingsRetirementPlanVestingRights" xlink:label="cli_SavingsRetirementPlanVestingRights" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SavingsRetirementPlanVestingRights" xlink:to="cli_SavingsRetirementPlanVestingRights_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SavingsRetirementPlanVestingRights_lbl" xml:lang="en-US">Savings Retirement Plan Vesting Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SavingsRetirementPlanVestingRights_lbl" xml:lang="en-US">Savings Retirement Plan Vesting Rights</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SavingsRetirementPlanVestingRights_lbl" xml:lang="en-US">Employees' vesting rights</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeBenefitsAndShareBasedCompensation" xlink:to="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" xml:lang="en-US">Employee Benefits and Share-based Compensation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" xml:lang="en-US">Expenses for employee benefit plan</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DefinedBenefitPlanAnnualEmployerContribution" xlink:label="cli_DefinedBenefitPlanAnnualEmployerContribution" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DefinedBenefitPlanAnnualEmployerContribution" xlink:to="cli_DefinedBenefitPlanAnnualEmployerContribution_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DefinedBenefitPlanAnnualEmployerContribution_lbl" xml:lang="en-US">Defined Benefit Plan, Annual Employer Contribution</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DefinedBenefitPlanAnnualEmployerContribution_lbl" xml:lang="en-US">Defined Benefit Plan, Annual Employer Contribution</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DefinedBenefitPlanAnnualEmployerContribution_lbl" xml:lang="en-US">Amount of annual employer contribution to deferred retirement compensation</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US">Shares granted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US">Awards issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xml:lang="en-US">Shares, Granted</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US">Shares, Vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US">Restricted stock units vested</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xml:lang="en-US">Shares vested</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockDividendsShares" xlink:label="us-gaap_CommonStockDividendsShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockDividendsShares" xlink:to="us-gaap_CommonStockDividendsShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockDividendsShares_lbl" xml:lang="en-US">Common Stock Dividends, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockDividendsShares_lbl" xml:lang="en-US">Dividend equivalent payment, shares</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DefinedBenefitPlanPeriodUponWhichStockUnitsBecomePayableFollowingTriggeringEvent" xlink:label="cli_DefinedBenefitPlanPeriodUponWhichStockUnitsBecomePayableFollowingTriggeringEvent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DefinedBenefitPlanPeriodUponWhichStockUnitsBecomePayableFollowingTriggeringEvent" xlink:to="cli_DefinedBenefitPlanPeriodUponWhichStockUnitsBecomePayableFollowingTriggeringEvent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DefinedBenefitPlanPeriodUponWhichStockUnitsBecomePayableFollowingTriggeringEvent_lbl" xml:lang="en-US">Defined Benefit Plan, Period Upon Which Stock Units Become Payable Following Triggering Event</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DefinedBenefitPlanPeriodUponWhichStockUnitsBecomePayableFollowingTriggeringEvent_lbl" xml:lang="en-US">Defined Benefit Plan, Period Upon Which Stock Units Become Payable Following Triggering Event</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DefinedBenefitPlanPeriodUponWhichStockUnitsBecomePayableFollowingTriggeringEvent_lbl" xml:lang="en-US">Period upon which stock units become payable following a triggering event</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="us-gaap_DebtInstrumentFairValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFairValue" xlink:to="us-gaap_DebtInstrumentFairValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US">Debt Instrument, Fair Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US">Fair value of Company's long-term debt</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="us-gaap_DebtInstrumentCarryingAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCarryingAmount" xlink:to="us-gaap_DebtInstrumentCarryingAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US">Long-term Debt, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xml:lang="en-US">Book value of Company's long-term debt</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommitmentsAndContingenciesTable" xlink:label="cli_CommitmentsAndContingenciesTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommitmentsAndContingenciesTable" xlink:to="cli_CommitmentsAndContingenciesTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommitmentsAndContingenciesTable_lbl" xml:lang="en-US">Commitments And Contingencies [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommitmentsAndContingenciesTable_lbl" xml:lang="en-US">Commitments and Contingencies [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HarborsideFinancialCenterPlazaFouraMember" xlink:label="cli_HarborsideFinancialCenterPlazaFouraMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HarborsideFinancialCenterPlazaFouraMember" xlink:to="cli_HarborsideFinancialCenterPlazaFouraMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HarborsideFinancialCenterPlazaFouraMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza 4-A [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HarborsideFinancialCenterPlazaFouraMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza Foura [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HarborsideFinancialCenterPlazaFouraMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza 4-A [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HarborsideFinancialCenterPlazaFiveMember" xlink:label="cli_HarborsideFinancialCenterPlazaFiveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HarborsideFinancialCenterPlazaFiveMember" xlink:to="cli_HarborsideFinancialCenterPlazaFiveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HarborsideFinancialCenterPlazaFiveMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza 5 [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HarborsideFinancialCenterPlazaFiveMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HarborsideFinancialCenterPlazaFiveMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PortImperialFourAndFiveGarageDevelopmentMember" xlink:label="cli_PortImperialFourAndFiveGarageDevelopmentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PortImperialFourAndFiveGarageDevelopmentMember" xlink:to="cli_PortImperialFourAndFiveGarageDevelopmentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PortImperialFourAndFiveGarageDevelopmentMember_lbl" xml:lang="en-US">Port Imperial 4/5 Garage Development [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PortImperialFourAndFiveGarageDevelopmentMember_lbl" xml:lang="en-US">Port Imperial Four And Five Garage Development [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PortImperialFourAndFiveGarageDevelopmentMember_lbl" xml:lang="en-US">Port Imperial 4/5 Garage Development [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommitmentsAndContingenciesLineItems" xlink:label="cli_CommitmentsAndContingenciesLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommitmentsAndContingenciesLineItems" xlink:to="cli_CommitmentsAndContingenciesLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommitmentsAndContingenciesLineItems_lbl" xml:lang="en-US">Commitments And Contingencies [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommitmentsAndContingenciesLineItems_lbl" xml:lang="en-US">Commitments And Contingencies [Line Items]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ProjectTerm" xlink:label="cli_ProjectTerm" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ProjectTerm" xlink:to="cli_ProjectTerm_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ProjectTerm_lbl" xml:lang="en-US">Project Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ProjectTerm_lbl" xml:lang="en-US">Project Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ProjectTerm_lbl" xml:lang="en-US">Project period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PaymentsInLieuOfPropertyTaxAsPercentageOfTotalProjectCost" xlink:label="cli_PaymentsInLieuOfPropertyTaxAsPercentageOfTotalProjectCost" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PaymentsInLieuOfPropertyTaxAsPercentageOfTotalProjectCost" xlink:to="cli_PaymentsInLieuOfPropertyTaxAsPercentageOfTotalProjectCost_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PaymentsInLieuOfPropertyTaxAsPercentageOfTotalProjectCost_lbl" xml:lang="en-US">Payments in Lieu of Property Tax As Percentage of Total Project Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PaymentsInLieuOfPropertyTaxAsPercentageOfTotalProjectCost_lbl" xml:lang="en-US">Payments in Lieu of Property Tax As Percentage of Total Project Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PaymentsInLieuOfPropertyTaxAsPercentageOfTotalProjectCost_lbl" xml:lang="en-US">Percentage of PILOT on project costs</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PaymentsInLieuOfPropertyTaxes" xlink:label="cli_PaymentsInLieuOfPropertyTaxes" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PaymentsInLieuOfPropertyTaxes" xlink:to="cli_PaymentsInLieuOfPropertyTaxes_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PaymentsInLieuOfPropertyTaxes_lbl" xml:lang="en-US">Payments In Lieu Of Property Taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PaymentsInLieuOfPropertyTaxes_lbl" xml:lang="en-US">Payments In Lieu Of Property Taxes</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PaymentsInLieuOfPropertyTaxes_lbl" xml:lang="en-US">Payments in lieu of property taxes (PILOT)</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PeriodOfRealEstateTaxesPhaseIn" xlink:label="cli_PeriodOfRealEstateTaxesPhaseIn" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PeriodOfRealEstateTaxesPhaseIn" xlink:to="cli_PeriodOfRealEstateTaxesPhaseIn_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PeriodOfRealEstateTaxesPhaseIn_lbl" xml:lang="en-US">Period Of Real Estate Taxes Phase In</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PeriodOfRealEstateTaxesPhaseIn_lbl" xml:lang="en-US">Period Of Real Estate Taxes Phase In</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PeriodOfRealEstateTaxesPhaseIn_lbl" xml:lang="en-US">Period of real estate taxes phase in</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PeriodOfPartialAbatementOfRealEstateTax" xlink:label="cli_PeriodOfPartialAbatementOfRealEstateTax" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PeriodOfPartialAbatementOfRealEstateTax" xlink:to="cli_PeriodOfPartialAbatementOfRealEstateTax_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PeriodOfPartialAbatementOfRealEstateTax_lbl" xml:lang="en-US">Period Of Partial Abatement Of Real Estate Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PeriodOfPartialAbatementOfRealEstateTax_lbl" xml:lang="en-US">Period Of Partial Abatement Of Real Estate Tax</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PeriodOfPartialAbatementOfRealEstateTax_lbl" xml:lang="en-US">Period of partial abatement of real estate taxes</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OperatingLeaseExpense" xlink:label="cli_OperatingLeaseExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OperatingLeaseExpense" xlink:to="cli_OperatingLeaseExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OperatingLeaseExpense_lbl" xml:lang="en-US">Rent expense for each period for which an income statement is presented for minimum lease payments, contingent rentals, and sublease rentals.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OperatingLeaseExpense_lbl" xml:lang="en-US">Operating Lease Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OperatingLeaseExpense_lbl" xml:lang="en-US">Ground lease expense incurred</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_lbl" xml:lang="en-US">Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RoselandPartnersLLCMember" xlink:label="cli_RoselandPartnersLLCMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RoselandPartnersLLCMember" xlink:to="cli_RoselandPartnersLLCMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RoselandPartnersLLCMember_lbl" xml:lang="en-US">Roseland Partners, L.L.C. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RoselandPartnersLLCMember_lbl" xml:lang="en-US">Roseland Partners L L C [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RoselandPartnersLLCMember_lbl" xml:lang="en-US">Roseland Partners, L.L.C. [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessAcquisitionContingentConsiderationLineItems" xlink:label="us-gaap_BusinessAcquisitionContingentConsiderationLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionContingentConsiderationLineItems" xlink:to="us-gaap_BusinessAcquisitionContingentConsiderationLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessAcquisitionContingentConsiderationLineItems_lbl" xml:lang="en-US">Business Acquisition, Contingent Consideration [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1" xlink:to="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_lbl" xml:lang="en-US">Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_lbl" xml:lang="en-US">Benefit related to change in fair value of Earn Out liability</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased" xlink:label="cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased" xlink:to="cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased_lbl" xml:lang="en-US">Business Acquisition, Acquiree, Amount Of Escrow Released</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased_lbl" xml:lang="en-US">Business Acquisition, Acquiree, Amount Of Escrow Released</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BusinessAcquisitionAcquireeAmountOfEscrowReleased_lbl" xml:lang="en-US">Amount of escrow released</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xml:lang="en-US">Related Party [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="us-gaap_RelatedPartyDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyDomain" xlink:to="us-gaap_RelatedPartyDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyDomain_lbl" xml:lang="en-US">Related Party [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RelatedPartyDomain_lbl" xml:lang="en-US">Related Party [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WegmansFoodMarketsIncMember" xlink:label="cli_WegmansFoodMarketsIncMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WegmansFoodMarketsIncMember" xlink:to="cli_WegmansFoodMarketsIncMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WegmansFoodMarketsIncMember_lbl" xml:lang="en-US">Wegmans Food Markets, Inc. [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WegmansFoodMarketsIncMember_lbl" xml:lang="en-US">Wegmans Food Markets Inc [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WegmansFoodMarketsIncMember_lbl" xml:lang="en-US">Wegmans Food Markets, Inc. [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HarborsideResidentialProjectMember" xlink:label="cli_HarborsideResidentialProjectMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HarborsideResidentialProjectMember" xlink:to="cli_HarborsideResidentialProjectMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HarborsideResidentialProjectMember_lbl" xml:lang="en-US">Harborside Residential Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HarborsideResidentialProjectMember_lbl" xml:lang="en-US">Harborside Residential Project [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HarborsideResidentialProjectMember_lbl" xml:lang="en-US">Harborside Residential Project [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PropertyLockUpsMember" xlink:label="cli_PropertyLockUpsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PropertyLockUpsMember" xlink:to="cli_PropertyLockUpsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PropertyLockUpsMember_lbl" xml:lang="en-US">Property Lock-Ups [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PropertyLockUpsMember_lbl" xml:lang="en-US">Property Lock Ups [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PropertyLockUpsMember_lbl" xml:lang="en-US">Property Lock-Ups [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PropertyLockUpsExpiredMember" xlink:label="cli_PropertyLockUpsExpiredMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PropertyLockUpsExpiredMember" xlink:to="cli_PropertyLockUpsExpiredMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PropertyLockUpsExpiredMember_lbl" xml:lang="en-US">Property Lock-Ups Expired [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PropertyLockUpsExpiredMember_lbl" xml:lang="en-US">Property Lock Ups Expired [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PropertyLockUpsExpiredMember_lbl" xml:lang="en-US">Property Lock-Ups Expired [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PropertyNetBookValue" xlink:label="cli_PropertyNetBookValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PropertyNetBookValue" xlink:to="cli_PropertyNetBookValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PropertyNetBookValue_lbl" xml:lang="en-US">Property Net Book Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PropertyNetBookValue_lbl" xml:lang="en-US">Property Net Book Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PropertyNetBookValue_lbl" xml:lang="en-US">Properties aggregate net book value</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PropertiesRestrictionForSaleExpirationPeriod" xlink:label="cli_PropertiesRestrictionForSaleExpirationPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PropertiesRestrictionForSaleExpirationPeriod" xlink:to="cli_PropertiesRestrictionForSaleExpirationPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PropertiesRestrictionForSaleExpirationPeriod_lbl" xml:lang="en-US">Properties Restriction For Sale Expiration Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PropertiesRestrictionForSaleExpirationPeriod_lbl" xml:lang="en-US">Properties Restriction For Sale Expiration Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PropertiesRestrictionForSaleExpirationPeriod_lbl" xml:lang="en-US">Expiration year</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConstructionAndDevelopmentCosts" xlink:label="us-gaap_ConstructionAndDevelopmentCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConstructionAndDevelopmentCosts" xlink:to="us-gaap_ConstructionAndDevelopmentCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConstructionAndDevelopmentCosts_lbl" xml:lang="en-US">Construction and Development Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ConstructionAndDevelopmentCosts_lbl" xml:lang="en-US">Total estimated costs of the project</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DeliveryDateOfConstructedBuilding" xlink:label="cli_DeliveryDateOfConstructedBuilding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DeliveryDateOfConstructedBuilding" xlink:to="cli_DeliveryDateOfConstructedBuilding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DeliveryDateOfConstructedBuilding_lbl" xml:lang="en-US">Delivery date of constructed building</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DeliveryDateOfConstructedBuilding_lbl" xml:lang="en-US">Delivery Date Of Constructed Building</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DeliveryDateOfConstructedBuilding_lbl" xml:lang="en-US">Delivery date to tenant</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:label="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:to="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_lbl" xml:lang="en-US">Deferred Tax Assets, Tax Credit Carryforwards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_lbl" xml:lang="en-US">State tax credit</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CapitalCreditReceivablePerSquareFoot" xlink:label="cli_CapitalCreditReceivablePerSquareFoot" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CapitalCreditReceivablePerSquareFoot" xlink:to="cli_CapitalCreditReceivablePerSquareFoot_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CapitalCreditReceivablePerSquareFoot_lbl" xml:lang="en-US">Capital credit receivable per square foot.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CapitalCreditReceivablePerSquareFoot_lbl" xml:lang="en-US">Capital Credit Receivable Per Square Foot</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CapitalCreditReceivablePerSquareFoot_lbl" xml:lang="en-US">Capital credit receivable (per square foot)</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AggregateCapitalCredits" xlink:label="cli_AggregateCapitalCredits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AggregateCapitalCredits" xlink:to="cli_AggregateCapitalCredits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AggregateCapitalCredits_lbl" xml:lang="en-US">Aggregate Capital Credits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AggregateCapitalCredits_lbl" xml:lang="en-US">Aggregate Capital Credits</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AggregateCapitalCredits_lbl" xml:lang="en-US">Aggregate capital credits</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AmountToFund" xlink:label="cli_AmountToFund" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AmountToFund" xlink:to="cli_AmountToFund_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AmountToFund_lbl" xml:lang="en-US">Amount To Fund</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AmountToFund_lbl" xml:lang="en-US">Amount To Fund</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AmountToFund_lbl" xml:lang="en-US">Amount to fund</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Due, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_lbl" xml:lang="en-US">2014</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Two Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_lbl" xml:lang="en-US">2015</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Three Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_lbl" xml:lang="en-US">2016</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Four Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_lbl" xml:lang="en-US">2017</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Five Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_lbl" xml:lang="en-US">2018</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due Thereafter</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_lbl" xml:lang="en-US">2019 through 2084</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Due</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue_lbl" xml:lang="en-US">Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable" xlink:to="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_lbl" xml:lang="en-US">Property Subject to or Available for Operating Lease, by Major Property Class [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis" xlink:to="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis_lbl" xml:lang="en-US">Property Subject to or Available for Operating Lease [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain" xlink:to="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain_lbl" xml:lang="en-US">Property Subject To Or Available For Operating Lease [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain_lbl" xml:lang="en-US">Property Subject to or Available for Operating Lease [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TenantLeasesMember" xlink:label="cli_TenantLeasesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TenantLeasesMember" xlink:to="cli_TenantLeasesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TenantLeasesMember_lbl" xml:lang="en-US">Tenant Leases [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TenantLeasesMember_lbl" xml:lang="en-US">Tenant Leases [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TenantLeasesMember_lbl" xml:lang="en-US">Tenant Leases [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems" xlink:to="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_lbl" xml:lang="en-US">Property Subject to or Available for Operating Lease [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, Current</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent_lbl" xml:lang="en-US">2014</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Two Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears_lbl" xml:lang="en-US">2015</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Three Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears_lbl" xml:lang="en-US">2016</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Four Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFourYears_lbl" xml:lang="en-US">2017</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, in Five Years</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears_lbl" xml:lang="en-US">2018</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable, Thereafter</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableThereafter_lbl" xml:lang="en-US">2019 and thereafter</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_lbl" xml:lang="en-US">Operating Leases, Future Minimum Payments Receivable</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable_lbl" xml:lang="en-US">Total</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LeasePeriod" xlink:label="cli_LeasePeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LeasePeriod" xlink:to="cli_LeasePeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LeasePeriod_lbl" xml:lang="en-US">Lease Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LeasePeriod_lbl" xml:lang="en-US">Lease Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LeasePeriod_lbl" xml:lang="en-US">Lease period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MackCaliRealtyCorporationStockholdersEquityTable" xlink:label="cli_MackCaliRealtyCorporationStockholdersEquityTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MackCaliRealtyCorporationStockholdersEquityTable" xlink:to="cli_MackCaliRealtyCorporationStockholdersEquityTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MackCaliRealtyCorporationStockholdersEquityTable_lbl" xml:lang="en-US">Mack-Cali Realty Corporation Stockholders' Equity [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MackCaliRealtyCorporationStockholdersEquityTable_lbl" xml:lang="en-US">Mack-Cali Realty Corporation Stockholders' Equity [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DividendReinvestmentAndStockPurchasePlanMember" xlink:label="cli_DividendReinvestmentAndStockPurchasePlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DividendReinvestmentAndStockPurchasePlanMember" xlink:to="cli_DividendReinvestmentAndStockPurchasePlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DividendReinvestmentAndStockPurchasePlanMember_lbl" xml:lang="en-US">Dividend Reinvestment And Stock Purchase Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DividendReinvestmentAndStockPurchasePlanMember_lbl" xml:lang="en-US">Dividend Reinvestment And Stock Purchase Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DividendReinvestmentAndStockPurchasePlanMember_lbl" xml:lang="en-US">Dividend Reinvestment And Stock Purchase Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MackCaliRealtyCorporationStockholdersEquityLineItems" xlink:label="cli_MackCaliRealtyCorporationStockholdersEquityLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MackCaliRealtyCorporationStockholdersEquityLineItems" xlink:to="cli_MackCaliRealtyCorporationStockholdersEquityLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MackCaliRealtyCorporationStockholdersEquityLineItems_lbl" xml:lang="en-US">Mack Cali Realty Corporation Stockholders Equity [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MackCaliRealtyCorporationStockholdersEquityLineItems_lbl" xml:lang="en-US">Mack Cali Realty Corporation Stockholders Equity [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="us-gaap_PreferredStockSharesOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US">Preferred stock, shares outstanding</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="us-gaap_PreferredStockDividendRatePercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockDividendRatePercentage" xlink:to="us-gaap_PreferredStockDividendRatePercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US">Preferred Stock, Dividend Rate, Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xml:lang="en-US">Preferred stock, percentage</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DepositaryShares" xlink:label="cli_DepositaryShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DepositaryShares" xlink:to="cli_DepositaryShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DepositaryShares_lbl" xml:lang="en-US">Amount of depositary shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DepositaryShares_lbl" xml:lang="en-US">Depositary Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_DepositaryShares_lbl" xml:lang="en-US">Amount of depositary shares converted from the preferred shares</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DepositarySharesValuePerShare" xlink:label="cli_DepositarySharesValuePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DepositarySharesValuePerShare" xlink:to="cli_DepositarySharesValuePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DepositarySharesValuePerShare_lbl" xml:lang="en-US">Depositary shares value, per share.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DepositarySharesValuePerShare_lbl" xml:lang="en-US">Depositary Shares Value Per Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_DepositarySharesValuePerShare_lbl" xml:lang="en-US">Depositary shares value, per share</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DepositaryShareEquivalentOfPreferredShare" xlink:label="cli_DepositaryShareEquivalentOfPreferredShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DepositaryShareEquivalentOfPreferredShare" xlink:to="cli_DepositaryShareEquivalentOfPreferredShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DepositaryShareEquivalentOfPreferredShare_lbl" xml:lang="en-US">Depositary Share Equivalent Of Preferred Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DepositaryShareEquivalentOfPreferredShare_lbl" xml:lang="en-US">Depositary Share Equivalent Of Preferred Share</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DepositaryShareEquivalentOfPreferredShare_lbl" xml:lang="en-US">One depositary share equivalent of one Series C Preferred Stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockRedemptionPricePerShare" xlink:label="us-gaap_PreferredStockRedemptionPricePerShare" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockRedemptionPricePerShare" xlink:to="us-gaap_PreferredStockRedemptionPricePerShare_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockRedemptionPricePerShare_lbl" xml:lang="en-US">Preferred stock, redemption price per share</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WriteOffOfPreferredStockIssuanceCost" xlink:label="cli_WriteOffOfPreferredStockIssuanceCost" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WriteOffOfPreferredStockIssuanceCost" xlink:to="cli_WriteOffOfPreferredStockIssuanceCost_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WriteOffOfPreferredStockIssuanceCost_lbl" xml:lang="en-US">Write-off of preferred stock issuance cost amounts on redemption.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WriteOffOfPreferredStockIssuanceCost_lbl" xml:lang="en-US">Write Off Of Preferred Stock Issuance Cost</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WriteOffOfPreferredStockIssuanceCost_lbl" xml:lang="en-US">Write off of preferred stock issuance costs</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DateShareRepurchaseProgramInitiation" xlink:label="cli_DateShareRepurchaseProgramInitiation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DateShareRepurchaseProgramInitiation" xlink:to="cli_DateShareRepurchaseProgramInitiation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DateShareRepurchaseProgramInitiation_lbl" xml:lang="en-US">Date Share Repurchase Program was initiated.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DateShareRepurchaseProgramInitiation_lbl" xml:lang="en-US">Date Share Repurchase Program Initiation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_DateShareRepurchaseProgramInitiation_lbl" xml:lang="en-US">Date share repurchase program was initiated</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramAuthorizedAmount" xlink:to="us-gaap_StockRepurchaseProgramAuthorizedAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount_lbl" xml:lang="en-US">Stock Repurchase Program Authorized Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount_lbl" xml:lang="en-US">Capacity of share repurchase program</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xml:lang="en-US">Stock Repurchased and Retired During Period, Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xml:lang="en-US">Shares purchased and retired</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsForRepurchaseOfEquity" xlink:label="us-gaap_PaymentsForRepurchaseOfEquity" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfEquity" xlink:to="us-gaap_PaymentsForRepurchaseOfEquity_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsForRepurchaseOfEquity_lbl" xml:lang="en-US">Payments for Repurchase of Equity</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PaymentsForRepurchaseOfEquity_lbl" xml:lang="en-US">Aggregate cost of stock repurchased</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount" xlink:label="us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount" xlink:to="us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_lbl" xml:lang="en-US">Stock Repurchase Program Remaining Authorized Repurchase Amount</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount_lbl" xml:lang="en-US">Capacity available for additional repurchase of outstanding common stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US">Common stock reserved for future issuance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_lbl" xml:lang="en-US">Reserved stocks for issuance</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MonthlyCashInvestmentWithoutRestrictionMaximum" xlink:label="cli_MonthlyCashInvestmentWithoutRestrictionMaximum" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MonthlyCashInvestmentWithoutRestrictionMaximum" xlink:to="cli_MonthlyCashInvestmentWithoutRestrictionMaximum_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MonthlyCashInvestmentWithoutRestrictionMaximum_lbl" xml:lang="en-US">Monthly cash investment without restriction, maximum.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MonthlyCashInvestmentWithoutRestrictionMaximum_lbl" xml:lang="en-US">Monthly Cash Investment Without Restriction Maximum</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MonthlyCashInvestmentWithoutRestrictionMaximum_lbl" xml:lang="en-US">Monthly cash investment without restriction, maximum</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xml:lang="en-US">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="us-gaap_PlanNameAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameAxis_lbl" xml:lang="en-US">Plan Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="us-gaap_PlanNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameDomain" xlink:to="us-gaap_PlanNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PlanNameDomain_lbl" xml:lang="en-US">Plan Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PlanNameDomain_lbl" xml:lang="en-US">Plan Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoThousandThirteenIncentiveStockPlanMember" xlink:label="cli_TwoThousandThirteenIncentiveStockPlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoThousandThirteenIncentiveStockPlanMember" xlink:to="cli_TwoThousandThirteenIncentiveStockPlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoThousandThirteenIncentiveStockPlanMember_lbl" xml:lang="en-US">2013 Incentive Stock Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoThousandThirteenIncentiveStockPlanMember_lbl" xml:lang="en-US">Two Thousand Thirteen Incentive Stock Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoThousandThirteenIncentiveStockPlanMember_lbl" xml:lang="en-US">2013 Incentive Stock Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoThousandFourIncentiveStockPlanMember" xlink:label="cli_TwoThousandFourIncentiveStockPlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoThousandFourIncentiveStockPlanMember" xlink:to="cli_TwoThousandFourIncentiveStockPlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoThousandFourIncentiveStockPlanMember_lbl" xml:lang="en-US">2004 Incentive Stock Plan</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoThousandFourIncentiveStockPlanMember_lbl" xml:lang="en-US">Two Thousand Four Incentive Stock Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoThousandFourIncentiveStockPlanMember_lbl" xml:lang="en-US">2004 Incentive Stock Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EmployeeAndDirectorPlanMember" xlink:label="cli_EmployeeAndDirectorPlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EmployeeAndDirectorPlanMember" xlink:to="cli_EmployeeAndDirectorPlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EmployeeAndDirectorPlanMember_lbl" xml:lang="en-US">Employee And Director Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EmployeeAndDirectorPlanMember_lbl" xml:lang="en-US">Employee And Director Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EmployeeAndDirectorPlanMember_lbl" xml:lang="en-US">Employee And Director Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoThousandEmployeePlanMember" xlink:label="cli_TwoThousandEmployeePlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoThousandEmployeePlanMember" xlink:to="cli_TwoThousandEmployeePlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoThousandEmployeePlanMember_lbl" xml:lang="en-US">Two Thousand Employee Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoThousandEmployeePlanMember_lbl" xml:lang="en-US">Two Thousand Employee Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoThousandEmployeePlanMember_lbl" xml:lang="en-US">2000 Employee Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoThousandDirectorPlanMember" xlink:label="cli_TwoThousandDirectorPlanMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoThousandDirectorPlanMember_lbl" xml:lang="en-US">Two Thousand Director Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoThousandDirectorPlanMember_lbl" xml:lang="en-US">Two Thousand Director Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoThousandDirectorPlanMember_lbl" xml:lang="en-US">2000 Director Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EmployeePlanMember" xlink:label="cli_EmployeePlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EmployeePlanMember" xlink:to="cli_EmployeePlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EmployeePlanMember_lbl" xml:lang="en-US">Employee Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EmployeePlanMember_lbl" xml:lang="en-US">Employee Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EmployeePlanMember_lbl" xml:lang="en-US">Employee Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoThousandDirectorPlanAndDirectorPlanMember" xlink:label="cli_TwoThousandDirectorPlanAndDirectorPlanMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoThousandDirectorPlanAndDirectorPlanMember" xlink:to="cli_TwoThousandDirectorPlanAndDirectorPlanMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoThousandDirectorPlanAndDirectorPlanMember_lbl" xml:lang="en-US">Two Thousand Director Plan And Director Plan Member</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoThousandDirectorPlanAndDirectorPlanMember_lbl" xml:lang="en-US">Two Thousand Director Plan And Director Plan [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoThousandDirectorPlanAndDirectorPlanMember_lbl" xml:lang="en-US">2000 Director Plan And Director Plan [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US">Common Stock, Shares, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xml:lang="en-US">Shares issued</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xml:lang="en-US">Stock compensation vesting period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xml:lang="en-US">Exercisable time period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_StockOptionTerms" xlink:label="cli_StockOptionTerms" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_StockOptionTerms" xlink:to="cli_StockOptionTerms_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_StockOptionTerms_lbl" xml:lang="en-US">Stock option terms, years.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_StockOptionTerms_lbl" xml:lang="en-US">Stock Option Terms</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_StockOptionTerms_lbl" xml:lang="en-US">Stock option terms</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2" xlink:to="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2_lbl" xml:lang="en-US">Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2_lbl" xml:lang="en-US">Weighted average remaining contractual life</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xml:lang="en-US">Total intrinsic value of options exercised</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="us-gaap_StockOptionPlanExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockOptionPlanExpense" xlink:to="us-gaap_StockOptionPlanExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StockOptionPlanExpense_lbl" xml:lang="en-US">Stock or Unit Option Plan Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_StockOptionPlanExpense_lbl" xml:lang="en-US">Stock options expense</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedStockMember" xlink:label="us-gaap_RestrictedStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockMember" xlink:to="us-gaap_RestrictedStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US">Restricted Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RestrictedStockMember_lbl" xml:lang="en-US">Restricted Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RatifiedRestrictedStockAwardsMember" xlink:label="cli_RatifiedRestrictedStockAwardsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RatifiedRestrictedStockAwardsMember" xlink:to="cli_RatifiedRestrictedStockAwardsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RatifiedRestrictedStockAwardsMember_lbl" xml:lang="en-US">Ratified Restricted Stock Awards [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RatifiedRestrictedStockAwardsMember_lbl" xml:lang="en-US">Ratified Restricted Stock Awards [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RatifiedRestrictedStockAwardsMember_lbl" xml:lang="en-US">Ratified Restricted Stock Awards [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TotalStockholderReturnBasedAwardsMember" xlink:label="cli_TotalStockholderReturnBasedAwardsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TotalStockholderReturnBasedAwardsMember" xlink:to="cli_TotalStockholderReturnBasedAwardsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TotalStockholderReturnBasedAwardsMember_lbl" xml:lang="en-US">Total Stockholder Return Based Awards [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TotalStockholderReturnBasedAwardsMember_lbl" xml:lang="en-US">Total Stockholder Return Based Awards [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TotalStockholderReturnBasedAwardsMember_lbl" xml:lang="en-US">Total Stockholder Return Based Awards [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedInPeriod" xlink:label="cli_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedInPeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedInPeriod" xlink:to="cli_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedInPeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedInPeriod_lbl" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Unvested In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedInPeriod_lbl" xml:lang="en-US">Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Unvested In Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUnvestedInPeriod_lbl" xml:lang="en-US">Unvested performance shares</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Unvested restricted stock outstanding, ending balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Unvested restricted stock outstanding, beginning balance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xml:lang="en-US">Unvested restricted stock outstanding</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RestrictedStockAwardsUnvestedSharesOutstandingPerformanceContingent" xlink:label="cli_RestrictedStockAwardsUnvestedSharesOutstandingPerformanceContingent" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RestrictedStockAwardsUnvestedSharesOutstandingPerformanceContingent" xlink:to="cli_RestrictedStockAwardsUnvestedSharesOutstandingPerformanceContingent_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RestrictedStockAwardsUnvestedSharesOutstandingPerformanceContingent_lbl" xml:lang="en-US">The number of unvested restricted stock award shares issued and outstanding contingent upon performance.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RestrictedStockAwardsUnvestedSharesOutstandingPerformanceContingent_lbl" xml:lang="en-US">Restricted Stock Awards Unvested Shares Outstanding Performance Contingent</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RestrictedStockAwardsUnvestedSharesOutstandingPerformanceContingent_lbl" xml:lang="en-US">Restricted stock awards unvested shares outstanding, performance contingent</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ValueOfCommonStockReceivedUponVestingOfAwards" xlink:label="cli_ValueOfCommonStockReceivedUponVestingOfAwards" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ValueOfCommonStockReceivedUponVestingOfAwards" xlink:to="cli_ValueOfCommonStockReceivedUponVestingOfAwards_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ValueOfCommonStockReceivedUponVestingOfAwards_lbl" xml:lang="en-US">Value Of Common Stock Received Upon Vesting Of Awards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ValueOfCommonStockReceivedUponVestingOfAwards_lbl" xml:lang="en-US">Value Of Common Stock Received Upon Vesting Of Awards</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ValueOfCommonStockReceivedUponVestingOfAwards_lbl" xml:lang="en-US">Value of common stock received upon vesting of awards</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xml:lang="en-US">Total unrecognized compensation cost</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xml:lang="en-US">Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xml:lang="en-US">Total unrecognized compensation cost, period of recognition</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MaximumPercentageOfRetainerFeeDirectorsMayElectToDeferToStockUnits" xlink:label="cli_MaximumPercentageOfRetainerFeeDirectorsMayElectToDeferToStockUnits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MaximumPercentageOfRetainerFeeDirectorsMayElectToDeferToStockUnits" xlink:to="cli_MaximumPercentageOfRetainerFeeDirectorsMayElectToDeferToStockUnits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MaximumPercentageOfRetainerFeeDirectorsMayElectToDeferToStockUnits_lbl" xml:lang="en-US">Maximum Percentage Of Retainer Fee Directors May Elect To Defer To Stock Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MaximumPercentageOfRetainerFeeDirectorsMayElectToDeferToStockUnits_lbl" xml:lang="en-US">Maximum Percentage Of Retainer Fee Directors May Elect To Defer To Stock Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MaximumPercentageOfRetainerFeeDirectorsMayElectToDeferToStockUnits_lbl" xml:lang="en-US">Maximum percentage of retainer fee that directors may defer</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DeferredStockUnitsSharesEarned" xlink:label="cli_DeferredStockUnitsSharesEarned" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DeferredStockUnitsSharesEarned" xlink:to="cli_DeferredStockUnitsSharesEarned_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DeferredStockUnitsSharesEarned_lbl" xml:lang="en-US">Deferred stock units earned.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DeferredStockUnitsSharesEarned_lbl" xml:lang="en-US">Deferred Stock Units Shares Earned</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_DeferredStockUnitsSharesEarned_lbl" xml:lang="en-US">Deferred stock units earned</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DeferredStockUnitsOutstanding" xlink:label="cli_DeferredStockUnitsOutstanding" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DeferredStockUnitsOutstanding" xlink:to="cli_DeferredStockUnitsOutstanding_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DeferredStockUnitsOutstanding_lbl" xml:lang="en-US">Deferred stock units outstanding.</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_IncomeLossFromDiscontinuedOperationsAvailableToCommonShareholders_lbl" xml:lang="en-US">Income Loss From Discontinued Operations Available To Common Shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_IncomeLossFromDiscontinuedOperationsAvailableToCommonShareholders_lbl" xml:lang="en-US">Income Loss From Discontinued Operations Available To Common Shareholders</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_IncomeLossFromDiscontinuedOperationsAvailableToCommonShareholders_lbl" xml:lang="en-US">Income from discontinued operations available to common shareholders</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_IncomeLossFromContinuingOperationsDiluted" xlink:label="cli_IncomeLossFromContinuingOperationsDiluted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_IncomeLossFromContinuingOperationsDiluted" xlink:to="cli_IncomeLossFromContinuingOperationsDiluted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_IncomeLossFromContinuingOperationsDiluted_lbl" xml:lang="en-US">Income Loss From Continuing Operations Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_IncomeLossFromContinuingOperationsDiluted_lbl" xml:lang="en-US">Income Loss From Continuing Operations Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_IncomeLossFromContinuingOperationsDiluted_lbl" xml:lang="en-US">Income (loss) from continuing operations for diluted earnings per share</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:to="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xml:lang="en-US">Net Income (Loss) Available to Common Stockholders, Diluted</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xml:lang="en-US">Net income available to common shareholders</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommonUnits" xlink:label="cli_CommonUnits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommonUnits" xlink:to="cli_CommonUnits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommonUnits_lbl" xml:lang="en-US">Common units.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommonUnits_lbl" xml:lang="en-US">Common Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_CommonUnits_lbl" xml:lang="en-US">Add: Operating Partnership - common units</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_StockOptions" xlink:label="cli_StockOptions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_StockOptions" xlink:to="cli_StockOptions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_StockOptions_lbl" xml:lang="en-US">Stock Options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_StockOptions_lbl" xml:lang="en-US">Stock Options</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_StockOptions_lbl" xml:lang="en-US">Stock Options</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RestrictedStockAwardsShares" xlink:label="cli_RestrictedStockAwardsShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RestrictedStockAwardsShares" xlink:to="cli_RestrictedStockAwardsShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RestrictedStockAwardsShares_lbl" xml:lang="en-US">Restricted Stock Awards, shares.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RestrictedStockAwardsShares_lbl" xml:lang="en-US">Restricted Stock Awards Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_RestrictedStockAwardsShares_lbl" xml:lang="en-US">Restricted Stock Awards</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestTable" xlink:label="us-gaap_MinorityInterestTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestTable" xlink:to="us-gaap_MinorityInterestTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestTable_lbl" xml:lang="en-US">Noncontrolling Interest [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BuildingMember" xlink:label="us-gaap_BuildingMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingMember" xlink:to="us-gaap_BuildingMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_BuildingMember_lbl" xml:lang="en-US">Building [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_BuildingMember_lbl" xml:lang="en-US">Office Buildings [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ParticipationRightsMember" xlink:label="cli_ParticipationRightsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ParticipationRightsMember" xlink:to="cli_ParticipationRightsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ParticipationRightsMember_lbl" xml:lang="en-US">Participation Rights [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ParticipationRightsMember_lbl" xml:lang="en-US">Participation Rights [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ParticipationRightsMember_lbl" xml:lang="en-US">Participation Rights [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredUnitsByNameAxis" xlink:label="us-gaap_PreferredUnitsByNameAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredUnitsByNameAxis" xlink:to="us-gaap_PreferredUnitsByNameAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredUnitsByNameAxis_lbl" xml:lang="en-US">Preferred Units by Name [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredUnitsClassDomain" xlink:label="us-gaap_PreferredUnitsClassDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredUnitsClassDomain" xlink:to="us-gaap_PreferredUnitsClassDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredUnitsClassDomain_lbl" xml:lang="en-US">Preferred Units Class [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredUnitsClassDomain_lbl" xml:lang="en-US">Preferred Units, Class [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SeriesCPreferredStockMember" xlink:label="us-gaap_SeriesCPreferredStockMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesCPreferredStockMember" xlink:to="us-gaap_SeriesCPreferredStockMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeriesCPreferredStockMember_lbl" xml:lang="en-US">Series C Preferred Stock [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SeriesCPreferredStockMember_lbl" xml:lang="en-US">Series C Preferred Stock [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestLineItems" xlink:label="us-gaap_MinorityInterestLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestLineItems" xlink:to="us-gaap_MinorityInterestLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestLineItems_lbl" xml:lang="en-US">Noncontrolling Interest [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred Stock, Value, Issued</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PreferredStockValue_lbl" xml:lang="en-US">Preferred stock issued</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PreferredUnitValue" xlink:label="cli_PreferredUnitValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PreferredUnitValue" xlink:to="cli_PreferredUnitValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PreferredUnitValue_lbl" xml:lang="en-US">Value of the preferred units acquired.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PreferredUnitValue_lbl" xml:lang="en-US">Preferred Unit Value</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PreferredUnitValue_lbl" xml:lang="en-US">Preferred unit in operating partnership</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfCommonSharesReceivedUponRedemptionOfCommonUnits" xlink:label="cli_NumberOfCommonSharesReceivedUponRedemptionOfCommonUnits" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfCommonSharesReceivedUponRedemptionOfCommonUnits" xlink:to="cli_NumberOfCommonSharesReceivedUponRedemptionOfCommonUnits_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfCommonSharesReceivedUponRedemptionOfCommonUnits_lbl" xml:lang="en-US">Number Of Common Shares Received Upon Redemption Of Common Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfCommonSharesReceivedUponRedemptionOfCommonUnits_lbl" xml:lang="en-US">Number Of Common Shares Received Upon Redemption Of Common Units</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfCommonSharesReceivedUponRedemptionOfCommonUnits_lbl" xml:lang="en-US">Number of common shares received upon redemption of common units</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RebalanceOfOwnershipPercentage" xlink:label="cli_RebalanceOfOwnershipPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RebalanceOfOwnershipPercentage" xlink:to="cli_RebalanceOfOwnershipPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RebalanceOfOwnershipPercentage_lbl" xml:lang="en-US">Rebalance Of Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RebalanceOfOwnershipPercentage_lbl" xml:lang="en-US">Rebalance Of Ownership Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_RebalanceOfOwnershipPercentage_lbl" xml:lang="en-US">Rebalance of ownership percentage</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:to="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_lbl" xml:lang="en-US">Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_lbl" xml:lang="en-US">Percentage of noncontrolling interest</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_DistributionOfCashFlowToIndividualCompaniesPercentage" xlink:label="cli_DistributionOfCashFlowToIndividualCompaniesPercentage" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_DistributionOfCashFlowToIndividualCompaniesPercentage" xlink:to="cli_DistributionOfCashFlowToIndividualCompaniesPercentage_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_DistributionOfCashFlowToIndividualCompaniesPercentage_lbl" xml:lang="en-US">Distribution of cash flow to individual companies percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_DistributionOfCashFlowToIndividualCompaniesPercentage_lbl" xml:lang="en-US">Distribution Of Cash Flow To Individual Companies Percentage</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_DistributionOfCashFlowToIndividualCompaniesPercentage_lbl" xml:lang="en-US">Excess net cash flow remaining after the distribution to the Company</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CommonUnitsRedeemedForCommonShares" xlink:label="cli_CommonUnitsRedeemedForCommonShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CommonUnitsRedeemedForCommonShares" xlink:to="cli_CommonUnitsRedeemedForCommonShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CommonUnitsRedeemedForCommonShares_lbl" xml:lang="en-US">Common Units Redeemed For Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CommonUnitsRedeemedForCommonShares_lbl" xml:lang="en-US">Common Units Redeemed For Common Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_CommonUnitsRedeemedForCommonShares_lbl" xml:lang="en-US">Redemption of common units for shares of common stock</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xml:lang="en-US">Schedule of Segment Reporting Information, by Segment [Table]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ForeignCountryMember" xlink:label="us-gaap_ForeignCountryMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCountryMember" xlink:to="us-gaap_ForeignCountryMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ForeignCountryMember_lbl" xml:lang="en-US">Foreign Country [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ForeignCountryMember_lbl" xml:lang="en-US">Foreign Locations [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="us-gaap_SegmentReportingInformationLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_SegmentReportingInformationLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xml:lang="en-US">Segment Reporting Information [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="us-gaap_NumberOfReportableSegments" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfReportableSegments" xlink:to="us-gaap_NumberOfReportableSegments_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xml:lang="en-US">Number of Reportable Segments</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xml:lang="en-US">Number of business segments</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">Revenues</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US">Revenue</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NoncurrentAssets" xlink:label="us-gaap_NoncurrentAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncurrentAssets" xlink:to="us-gaap_NoncurrentAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncurrentAssets_lbl" xml:lang="en-US">Long-Lived Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NoncurrentAssets_lbl" xml:lang="en-US">Long lived assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="us-gaap_StatementBusinessSegmentsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_StatementBusinessSegmentsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xml:lang="en-US">Business Segments [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SegmentDomain" xlink:label="us-gaap_SegmentDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SegmentDomain_lbl" xml:lang="en-US">Segment [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SegmentDomain_lbl" xml:lang="en-US">Segment [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateCommercialAndOtherSegmentMember" xlink:label="cli_RealEstateCommercialAndOtherSegmentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateCommercialAndOtherSegmentMember" xlink:to="cli_RealEstateCommercialAndOtherSegmentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateCommercialAndOtherSegmentMember_lbl" xml:lang="en-US">Real Estate Commercial And Other Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateCommercialAndOtherSegmentMember_lbl" xml:lang="en-US">Real Estate Commercial And Other Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstateCommercialAndOtherSegmentMember_lbl" xml:lang="en-US">Real Estate - Commercial And Other [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateMultipleFamilySegmentMember" xlink:label="cli_RealEstateMultipleFamilySegmentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateMultipleFamilySegmentMember" xlink:to="cli_RealEstateMultipleFamilySegmentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateMultipleFamilySegmentMember_lbl" xml:lang="en-US">Real Estate Multiple Family Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateMultipleFamilySegmentMember_lbl" xml:lang="en-US">Real Estate Multiple Family Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstateMultipleFamilySegmentMember_lbl" xml:lang="en-US">Real Estate - Multi Family [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MultipleFamilyServicesSegmentMember" xlink:label="cli_MultipleFamilyServicesSegmentMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MultipleFamilyServicesSegmentMember" xlink:to="cli_MultipleFamilyServicesSegmentMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MultipleFamilyServicesSegmentMember_lbl" xml:lang="en-US">Multiple Family Services Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MultipleFamilyServicesSegmentMember_lbl" xml:lang="en-US">Multiple Family Services Segment [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MultipleFamilyServicesSegmentMember_lbl" xml:lang="en-US">Multi Family Services [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CorporateAndOtherMember" xlink:label="us-gaap_CorporateAndOtherMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateAndOtherMember" xlink:to="us-gaap_CorporateAndOtherMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CorporateAndOtherMember_lbl" xml:lang="en-US">Corporate And Other [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CorporateAndOtherMember_lbl" xml:lang="en-US">Corporate &amp; Other [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OperatingAndInterestExpenses" xlink:label="cli_OperatingAndInterestExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OperatingAndInterestExpenses" xlink:to="cli_OperatingAndInterestExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OperatingAndInterestExpenses_lbl" xml:lang="en-US">Total operating and interest expenses.</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OperatingAndInterestExpenses_lbl" xml:lang="en-US">Operating And Interest Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_OperatingAndInterestExpenses_lbl" xml:lang="en-US">Total operating and interest expenses</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment" xlink:label="cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment" xlink:to="cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment_lbl" xml:lang="en-US">Segment Reporting Information, Net Operating Income (Loss) For Reportable Segment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment_lbl" xml:lang="en-US">Segment Reporting Information, Net Operating Income (Loss) For Reportable Segment</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment_lbl" xml:lang="en-US">Net operating income (loss)</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="cli_SegmentReportingInformationNetOperatingIncomeLossForReportableSegment_lbl" xml:lang="en-US">Net operating income</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LongLivedAssets" xlink:label="cli_LongLivedAssets" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LongLivedAssets" xlink:to="cli_LongLivedAssets_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LongLivedAssets_lbl" xml:lang="en-US">Long Lived Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LongLivedAssets_lbl" xml:lang="en-US">Long Lived Assets</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LongLivedAssets_lbl" xml:lang="en-US">Total long-lived assets</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyManagementFeeRevenue" xlink:label="us-gaap_PropertyManagementFeeRevenue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyManagementFeeRevenue" xlink:to="us-gaap_PropertyManagementFeeRevenue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PropertyManagementFeeRevenue_lbl" xml:lang="en-US">Property Management Fee Revenue</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PropertyManagementFeeRevenue_lbl" xml:lang="en-US">Fee revenue</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="us-gaap_ConsolidationItemsAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConsolidationItemsAxis" xlink:to="us-gaap_ConsolidationItemsAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConsolidationItemsAxis_lbl" xml:lang="en-US">Consolidation Items [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="us-gaap_ConsolidationItemsDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConsolidationItemsDomain" xlink:to="us-gaap_ConsolidationItemsDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ConsolidationItemsDomain_lbl" xml:lang="en-US">Consolidation Items [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ConsolidationItemsDomain_lbl" xml:lang="en-US">Consolidation Items [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="us-gaap_OperatingSegmentsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingSegmentsMember" xlink:to="us-gaap_OperatingSegmentsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xml:lang="en-US">Operating Segments [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xml:lang="en-US">Operating Segments [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="us-gaap_MaterialReconcilingItemsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaterialReconcilingItemsMember" xlink:to="us-gaap_MaterialReconcilingItemsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_MaterialReconcilingItemsMember_lbl" xml:lang="en-US">Material Reconciling Items [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_MaterialReconcilingItemsMember_lbl" xml:lang="en-US">Segment Reconciling Items [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xml:lang="en-US">Schedule of Related Party Transactions, by Related Party [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LeasedOfficeSpaceOneMember" xlink:label="cli_LeasedOfficeSpaceOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LeasedOfficeSpaceOneMember" xlink:to="cli_LeasedOfficeSpaceOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LeasedOfficeSpaceOneMember_lbl" xml:lang="en-US">Leased Office Space One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LeasedOfficeSpaceOneMember_lbl" xml:lang="en-US">Leased Office Space One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LeasedOfficeSpaceOneMember_lbl" xml:lang="en-US">Leased Office Space 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LeasedOfficeSpaceTwoMember" xlink:label="cli_LeasedOfficeSpaceTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LeasedOfficeSpaceTwoMember" xlink:to="cli_LeasedOfficeSpaceTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LeasedOfficeSpaceTwoMember_lbl" xml:lang="en-US">Leased Office Space Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LeasedOfficeSpaceTwoMember_lbl" xml:lang="en-US">Leased Office Space Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LeasedOfficeSpaceTwoMember_lbl" xml:lang="en-US">Leased Office Space 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LeasedPropertyMember" xlink:label="cli_LeasedPropertyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LeasedPropertyMember" xlink:to="cli_LeasedPropertyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LeasedPropertyMember_lbl" xml:lang="en-US">Leased Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LeasedPropertyMember_lbl" xml:lang="en-US">Leased Property [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LeasedPropertyMember_lbl" xml:lang="en-US">Leased Property [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MackMember" xlink:label="cli_MackMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MackMember" xlink:to="cli_MackMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MackMember_lbl" xml:lang="en-US">Mack [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MackMember_lbl" xml:lang="en-US">Mack [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MackMember_lbl" xml:lang="en-US">Mack [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RGMember" xlink:label="cli_RGMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RGMember" xlink:to="cli_RGMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RGMember_lbl" xml:lang="en-US">RG [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RGMember_lbl" xml:lang="en-US">R G [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RGMember_lbl" xml:lang="en-US">RG [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="us-gaap_RelatedPartyTransactionLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_RelatedPartyTransactionLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xml:lang="en-US">Related Party Transaction [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_DueFromRelatedParties" xlink:label="us-gaap_DueFromRelatedParties" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueFromRelatedParties" xlink:to="us-gaap_DueFromRelatedParties_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueFromRelatedParties_lbl" xml:lang="en-US">Due from Related Parties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_DueFromRelatedParties_lbl" xml:lang="en-US">Due from related parties</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RevenueFromRelatedParties" xlink:label="us-gaap_RevenueFromRelatedParties" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromRelatedParties" xlink:to="us-gaap_RevenueFromRelatedParties_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenueFromRelatedParties_lbl" xml:lang="en-US">Revenue from Related Parties</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenueFromRelatedParties_lbl" xml:lang="en-US">Related party revenue</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="us-gaap_SubsequentEventTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTable" xlink:to="us-gaap_SubsequentEventTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventTable_lbl" xml:lang="en-US">Subsequent Event [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FivePointOneOnePercentSeniorUnsecuredNotesMember" xlink:label="cli_FivePointOneOnePercentSeniorUnsecuredNotesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FivePointOneOnePercentSeniorUnsecuredNotesMember" xlink:to="cli_FivePointOneOnePercentSeniorUnsecuredNotesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FivePointOneOnePercentSeniorUnsecuredNotesMember_lbl" xml:lang="en-US">5.11% Senior Unsecured Notes [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FivePointOneOnePercentSeniorUnsecuredNotesMember_lbl" xml:lang="en-US">Five Point One One Percent Senior Unsecured Notes [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FivePointOneOnePercentSeniorUnsecuredNotesMember_lbl" xml:lang="en-US">5.11% Senior Unsecured Notes [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="us-gaap_SubsequentEventLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventLineItems" xlink:to="us-gaap_SubsequentEventLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xml:lang="en-US">Subsequent Event [Line Items]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SeveranceCosts1" xlink:label="us-gaap_SeveranceCosts1" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeveranceCosts1" xlink:to="us-gaap_SeveranceCosts1_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SeveranceCosts1_lbl" xml:lang="en-US">Severance Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SeveranceCosts1_lbl" xml:lang="en-US">Severance benefits</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares_lbl" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares_lbl" xml:lang="en-US">Stock options vested</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PeriodForContinuationOfHealthInsurance" xlink:label="cli_PeriodForContinuationOfHealthInsurance" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PeriodForContinuationOfHealthInsurance" xlink:to="cli_PeriodForContinuationOfHealthInsurance_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PeriodForContinuationOfHealthInsurance_lbl" xml:lang="en-US">Period For Continuation Of Health Insurance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PeriodForContinuationOfHealthInsurance_lbl" xml:lang="en-US">Period For Continuation Of Health Insurance</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PeriodForContinuationOfHealthInsurance_lbl" xml:lang="en-US">Period for continuation of health insurance</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US">Professional Fees</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US">Consulting payment</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AgreementTerminationPeriodPriorToSpecifiedNoticePeriod" xlink:label="cli_AgreementTerminationPeriodPriorToSpecifiedNoticePeriod" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AgreementTerminationPeriodPriorToSpecifiedNoticePeriod" xlink:to="cli_AgreementTerminationPeriodPriorToSpecifiedNoticePeriod_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AgreementTerminationPeriodPriorToSpecifiedNoticePeriod_lbl" xml:lang="en-US">Agreement Termination Period Prior To Specified Notice Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AgreementTerminationPeriodPriorToSpecifiedNoticePeriod_lbl" xml:lang="en-US">Agreement Termination Period Prior To Specified Notice Period</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AgreementTerminationPeriodPriorToSpecifiedNoticePeriod_lbl" xml:lang="en-US">Agreement termination period prior to specified notice period</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NumberOfBoardMembers" xlink:label="cli_NumberOfBoardMembers" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NumberOfBoardMembers" xlink:to="cli_NumberOfBoardMembers_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NumberOfBoardMembers_lbl" xml:lang="en-US">Number Of Board Members</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NumberOfBoardMembers_lbl" xml:lang="en-US">Number Of Board Members</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NumberOfBoardMembers_lbl" xml:lang="en-US">Number of board members</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_QuarterlyFinancialInformationTable" xlink:label="cli_QuarterlyFinancialInformationTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_QuarterlyFinancialInformationTable" xlink:to="cli_QuarterlyFinancialInformationTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_QuarterlyFinancialInformationTable_lbl" xml:lang="en-US">Quarterly Financial Information [Table]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_QuarterlyFinancialInformationTable_lbl" xml:lang="en-US">Quarterly Financial Information [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_QuarterlyFinancialInformationLineItems" xlink:label="cli_QuarterlyFinancialInformationLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_QuarterlyFinancialInformationLineItems" xlink:to="cli_QuarterlyFinancialInformationLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_QuarterlyFinancialInformationLineItems_lbl" xml:lang="en-US">Quarterly Financial Information [Line Items]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_QuarterlyFinancialInformationLineItems_lbl" xml:lang="en-US">Quarterly Financial Information [Line Items]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OperatingAndOtherExpenses" xlink:label="cli_OperatingAndOtherExpenses" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OperatingAndOtherExpenses" xlink:to="cli_OperatingAndOtherExpenses_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OperatingAndOtherExpenses_lbl" xml:lang="en-US">Operating And Other Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OperatingAndOtherExpenses_lbl" xml:lang="en-US">Operating And Other Expenses</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OperatingAndOtherExpenses_lbl" xml:lang="en-US">Operating and other expenses</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateServiceSalaries" xlink:label="cli_RealEstateServiceSalaries" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateServiceSalaries" xlink:to="cli_RealEstateServiceSalaries_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateServiceSalaries_lbl" xml:lang="en-US">Real Estate Service Salaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateServiceSalaries_lbl" xml:lang="en-US">Real Estate Service Salaries</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstateServiceSalaries_lbl" xml:lang="en-US">Real estate service salaries</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationByPropertyTable_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, by Property [Table]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByStateAxis" xlink:label="cli_RealEstatePropertyByStateAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByStateAxis" xlink:to="cli_RealEstatePropertyByStateAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByStateAxis_lbl" xml:lang="en-US">Real Estate Property By State [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByStateAxis_lbl" xml:lang="en-US">Real Estate Property By State [Axis]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByStateDomain" xlink:label="cli_RealEstatePropertyByStateDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByStateDomain" xlink:to="cli_RealEstatePropertyByStateDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByStateDomain_lbl" xml:lang="en-US">Real Estate Property By State [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByStateDomain_lbl" xml:lang="en-US">Real Estate Property By State [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstatePropertyByStateDomain_lbl" xml:lang="en-US">Real Estate Property By State [Domain]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_NY" xlink:label="stpr_NY" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_NY" xlink:to="stpr_NY_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="stpr_NY_lbl" xml:lang="en-US">N [Y]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="stpr_NY_lbl" xml:lang="en-US">New York [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_CT" xlink:label="stpr_CT" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_CT" xlink:to="stpr_CT_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="stpr_CT_lbl" xml:lang="en-US">C [T]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="stpr_CT_lbl" xml:lang="en-US">Connecticut [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_DC" xlink:label="stpr_DC" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_DC" xlink:to="stpr_DC_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="stpr_DC_lbl" xml:lang="en-US">D [C]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="stpr_DC_lbl" xml:lang="en-US">District Of Columbia [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd#stpr_MD" xlink:label="stpr_MD" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="stpr_MD" xlink:to="stpr_MD_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="stpr_MD_lbl" xml:lang="en-US">M [D]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="stpr_MD_lbl" xml:lang="en-US">Maryland [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByCountyAxis" xlink:label="cli_RealEstatePropertyByCountyAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByCountyAxis" xlink:to="cli_RealEstatePropertyByCountyAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByCountyAxis_lbl" xml:lang="en-US">Real Estate Property By County [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByCountyAxis_lbl" xml:lang="en-US">Real Estate Property By County [Axis]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByCountyDomain" xlink:label="cli_RealEstatePropertyByCountyDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByCountyDomain" xlink:to="cli_RealEstatePropertyByCountyDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByCountyDomain_lbl" xml:lang="en-US">Real Estate Property By County [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByCountyDomain_lbl" xml:lang="en-US">Real Estate Property By County [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstatePropertyByCountyDomain_lbl" xml:lang="en-US">Real Estate Property By County [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BergenCountyMember" xlink:label="cli_BergenCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BergenCountyMember" xlink:to="cli_BergenCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BergenCountyMember_lbl" xml:lang="en-US">Bergen County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BergenCountyMember_lbl" xml:lang="en-US">Bergen County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BergenCountyMember_lbl" xml:lang="en-US">Bergen County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BurlingtonCountyMember" xlink:label="cli_BurlingtonCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BurlingtonCountyMember" xlink:to="cli_BurlingtonCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BurlingtonCountyMember_lbl" xml:lang="en-US">Burlington County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BurlingtonCountyMember_lbl" xml:lang="en-US">Burlington County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BurlingtonCountyMember_lbl" xml:lang="en-US">Burlington County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_GloucesterCountyMember" xlink:label="cli_GloucesterCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_GloucesterCountyMember" xlink:to="cli_GloucesterCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_GloucesterCountyMember_lbl" xml:lang="en-US">Gloucester County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_GloucesterCountyMember_lbl" xml:lang="en-US">Gloucester County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_GloucesterCountyMember_lbl" xml:lang="en-US">Gloucester County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EssexCountyMember" xlink:label="cli_EssexCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EssexCountyMember" xlink:to="cli_EssexCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EssexCountyMember_lbl" xml:lang="en-US">Essex County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EssexCountyMember_lbl" xml:lang="en-US">Essex County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EssexCountyMember_lbl" xml:lang="en-US">Essex County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HudsonCountyMember" xlink:label="cli_HudsonCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HudsonCountyMember" xlink:to="cli_HudsonCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HudsonCountyMember_lbl" xml:lang="en-US">Hudson County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HudsonCountyMember_lbl" xml:lang="en-US">Hudson County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HudsonCountyMember_lbl" xml:lang="en-US">Hudson County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MercerCountyMember" xlink:label="cli_MercerCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MercerCountyMember" xlink:to="cli_MercerCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MercerCountyMember_lbl" xml:lang="en-US">Mercer County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MercerCountyMember_lbl" xml:lang="en-US">Mercer County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MercerCountyMember_lbl" xml:lang="en-US">Mercer County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MiddlesexCountyMember" xlink:label="cli_MiddlesexCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MiddlesexCountyMember" xlink:to="cli_MiddlesexCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MiddlesexCountyMember_lbl" xml:lang="en-US">Middlesex County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MiddlesexCountyMember_lbl" xml:lang="en-US">Middlesex County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MiddlesexCountyMember_lbl" xml:lang="en-US">Middlesex County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MonmouthCountyMember" xlink:label="cli_MonmouthCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MonmouthCountyMember" xlink:to="cli_MonmouthCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MonmouthCountyMember_lbl" xml:lang="en-US">Monmouth County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MonmouthCountyMember_lbl" xml:lang="en-US">Monmouth County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MonmouthCountyMember_lbl" xml:lang="en-US">Monmouth County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MorrisCountyMember" xlink:label="cli_MorrisCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MorrisCountyMember" xlink:to="cli_MorrisCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MorrisCountyMember_lbl" xml:lang="en-US">Morris County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MorrisCountyMember_lbl" xml:lang="en-US">Morris County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MorrisCountyMember_lbl" xml:lang="en-US">Morris County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PassaicCountyMember" xlink:label="cli_PassaicCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PassaicCountyMember" xlink:to="cli_PassaicCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PassaicCountyMember_lbl" xml:lang="en-US">Passaic County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PassaicCountyMember_lbl" xml:lang="en-US">Passaic County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PassaicCountyMember_lbl" xml:lang="en-US">Passaic County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SomersetCountyMember" xlink:label="cli_SomersetCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SomersetCountyMember" xlink:to="cli_SomersetCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SomersetCountyMember_lbl" xml:lang="en-US">Somerset County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SomersetCountyMember_lbl" xml:lang="en-US">Somerset County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SomersetCountyMember_lbl" xml:lang="en-US">Somerset County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UnionCountyMember" xlink:label="cli_UnionCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnionCountyMember" xlink:to="cli_UnionCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UnionCountyMember_lbl" xml:lang="en-US">Union County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UnionCountyMember_lbl" xml:lang="en-US">Union County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UnionCountyMember_lbl" xml:lang="en-US">Union County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NewYorkCountyMember" xlink:label="cli_NewYorkCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NewYorkCountyMember" xlink:to="cli_NewYorkCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NewYorkCountyMember_lbl" xml:lang="en-US">New York County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NewYorkCountyMember_lbl" xml:lang="en-US">New York County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NewYorkCountyMember_lbl" xml:lang="en-US">New York County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RocklandCountyMember" xlink:label="cli_RocklandCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RocklandCountyMember" xlink:to="cli_RocklandCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RocklandCountyMember_lbl" xml:lang="en-US">Rockland County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RocklandCountyMember_lbl" xml:lang="en-US">Rockland County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RocklandCountyMember_lbl" xml:lang="en-US">Rockland County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WestchesterCountyMember" xlink:label="cli_WestchesterCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WestchesterCountyMember" xlink:to="cli_WestchesterCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WestchesterCountyMember_lbl" xml:lang="en-US">Westchester County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WestchesterCountyMember_lbl" xml:lang="en-US">Westchester County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WestchesterCountyMember_lbl" xml:lang="en-US">Westchester County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FairfieldCountyMember" xlink:label="cli_FairfieldCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FairfieldCountyMember" xlink:to="cli_FairfieldCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FairfieldCountyMember_lbl" xml:lang="en-US">Fairfield County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FairfieldCountyMember_lbl" xml:lang="en-US">Fairfield County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FairfieldCountyMember_lbl" xml:lang="en-US">Fairfield County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WashingtonMember" xlink:label="cli_WashingtonMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WashingtonMember" xlink:to="cli_WashingtonMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WashingtonMember_lbl" xml:lang="en-US">Washington [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WashingtonMember_lbl" xml:lang="en-US">Washington [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WashingtonMember_lbl" xml:lang="en-US">Washington [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrinceGeorgesCountyMember" xlink:label="cli_PrinceGeorgesCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrinceGeorgesCountyMember" xlink:to="cli_PrinceGeorgesCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrinceGeorgesCountyMember_lbl" xml:lang="en-US">Prince George's County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrinceGeorgesCountyMember_lbl" xml:lang="en-US">Prince Georges County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrinceGeorgesCountyMember_lbl" xml:lang="en-US">Prince George's County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SuffolkCountyMember" xlink:label="cli_SuffolkCountyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SuffolkCountyMember" xlink:to="cli_SuffolkCountyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SuffolkCountyMember_lbl" xml:lang="en-US">Suffolk County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SuffolkCountyMember_lbl" xml:lang="en-US">Suffolk County [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SuffolkCountyMember_lbl" xml:lang="en-US">Suffolk County [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByLocationAxis" xlink:label="cli_RealEstatePropertyByLocationAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByLocationAxis" xlink:to="cli_RealEstatePropertyByLocationAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByLocationAxis_lbl" xml:lang="en-US">Real Estate Property By Location [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByLocationAxis_lbl" xml:lang="en-US">Real Estate Property By Location [Axis]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByLocationDomain" xlink:label="cli_RealEstatePropertyByLocationDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByLocationDomain" xlink:to="cli_RealEstatePropertyByLocationDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByLocationDomain_lbl" xml:lang="en-US">Real Estate Property By Location [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByLocationDomain_lbl" xml:lang="en-US">Real Estate Property By Location [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstatePropertyByLocationDomain_lbl" xml:lang="en-US">Real Estate Property By Location [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FairLawnMember" xlink:label="cli_FairLawnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FairLawnMember" xlink:to="cli_FairLawnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FairLawnMember_lbl" xml:lang="en-US">Fair Lawn [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FairLawnMember_lbl" xml:lang="en-US">Fair Lawn [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FairLawnMember_lbl" xml:lang="en-US">Fair Lawn [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FortLeeMember" xlink:label="cli_FortLeeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FortLeeMember" xlink:to="cli_FortLeeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FortLeeMember_lbl" xml:lang="en-US">Fort Lee [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FortLeeMember_lbl" xml:lang="en-US">Fort Lee [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FortLeeMember_lbl" xml:lang="en-US">Fort Lee [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LyndhurstMember" xlink:label="cli_LyndhurstMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LyndhurstMember" xlink:to="cli_LyndhurstMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LyndhurstMember_lbl" xml:lang="en-US">Lyndhurst [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LyndhurstMember_lbl" xml:lang="en-US">Lyndhurst [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LyndhurstMember_lbl" xml:lang="en-US">Lyndhurst [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MontvaleMember" xlink:label="cli_MontvaleMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MontvaleMember" xlink:to="cli_MontvaleMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MontvaleMember_lbl" xml:lang="en-US">Montvale [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MontvaleMember_lbl" xml:lang="en-US">Montvale [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MontvaleMember_lbl" xml:lang="en-US">Montvale [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ParamusMember" xlink:label="cli_ParamusMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ParamusMember" xlink:to="cli_ParamusMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ParamusMember_lbl" xml:lang="en-US">Paramus [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ParamusMember_lbl" xml:lang="en-US">Paramus [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ParamusMember_lbl" xml:lang="en-US">Paramus [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RochelleParkMember" xlink:label="cli_RochelleParkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RochelleParkMember" xlink:to="cli_RochelleParkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RochelleParkMember_lbl" xml:lang="en-US">Rochelle Park [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RochelleParkMember_lbl" xml:lang="en-US">Rochelle Park [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RochelleParkMember_lbl" xml:lang="en-US">Rochelle Park [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_UpperSaddleRiverMember" xlink:label="cli_UpperSaddleRiverMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UpperSaddleRiverMember" xlink:to="cli_UpperSaddleRiverMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_UpperSaddleRiverMember_lbl" xml:lang="en-US">Upper Saddle River [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_UpperSaddleRiverMember_lbl" xml:lang="en-US">Upper Saddle River [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_UpperSaddleRiverMember_lbl" xml:lang="en-US">Upper Saddle River [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WoodcliffLakeMember" xlink:label="cli_WoodcliffLakeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WoodcliffLakeMember" xlink:to="cli_WoodcliffLakeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WoodcliffLakeMember_lbl" xml:lang="en-US">Woodcliff Lake [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WoodcliffLakeMember_lbl" xml:lang="en-US">Woodcliff Lake [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WoodcliffLakeMember_lbl" xml:lang="en-US">Woodcliff Lake [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BurlingtonMember" xlink:label="cli_BurlingtonMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BurlingtonMember" xlink:to="cli_BurlingtonMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BurlingtonMember_lbl" xml:lang="en-US">Burlington [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BurlingtonMember_lbl" xml:lang="en-US">Burlington [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BurlingtonMember_lbl" xml:lang="en-US">Burlington [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MoorestownMember" xlink:label="cli_MoorestownMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MoorestownMember" xlink:to="cli_MoorestownMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MoorestownMember_lbl" xml:lang="en-US">Moorestown [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MoorestownMember_lbl" xml:lang="en-US">Moorestown [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MoorestownMember_lbl" xml:lang="en-US">Moorestown [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WestDeptfordMember" xlink:label="cli_WestDeptfordMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WestDeptfordMember" xlink:to="cli_WestDeptfordMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WestDeptfordMember_lbl" xml:lang="en-US">West Deptford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WestDeptfordMember_lbl" xml:lang="en-US">West Deptford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WestDeptfordMember_lbl" xml:lang="en-US">West Deptford [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MillburnMember" xlink:label="cli_MillburnMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MillburnMember" xlink:to="cli_MillburnMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MillburnMember_lbl" xml:lang="en-US">Millburn [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MillburnMember_lbl" xml:lang="en-US">Millburn [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MillburnMember_lbl" xml:lang="en-US">Millburn [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BoroughOfRoselandMember" xlink:label="cli_BoroughOfRoselandMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BoroughOfRoselandMember" xlink:to="cli_BoroughOfRoselandMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BoroughOfRoselandMember_lbl" xml:lang="en-US">Borough Of Roseland [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BoroughOfRoselandMember_lbl" xml:lang="en-US">Borough Of Roseland [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BoroughOfRoselandMember_lbl" xml:lang="en-US">Borough Of Roseland [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_JerseyCityMember" xlink:label="cli_JerseyCityMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_JerseyCityMember" xlink:to="cli_JerseyCityMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_JerseyCityMember_lbl" xml:lang="en-US">Jersey City [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_JerseyCityMember_lbl" xml:lang="en-US">Jersey City [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_JerseyCityMember_lbl" xml:lang="en-US">Jersey City [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WeehawkenMember" xlink:label="cli_WeehawkenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WeehawkenMember" xlink:to="cli_WeehawkenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WeehawkenMember_lbl" xml:lang="en-US">Weehawken [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WeehawkenMember_lbl" xml:lang="en-US">Weehawken [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WeehawkenMember_lbl" xml:lang="en-US">Weehawken [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HamiltonTownshipMember" xlink:label="cli_HamiltonTownshipMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HamiltonTownshipMember" xlink:to="cli_HamiltonTownshipMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HamiltonTownshipMember_lbl" xml:lang="en-US">Hamilton Township [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HamiltonTownshipMember_lbl" xml:lang="en-US">Hamilton Township [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HamiltonTownshipMember_lbl" xml:lang="en-US">Hamilton Township [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PrincetonMember" xlink:label="cli_PrincetonMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PrincetonMember" xlink:to="cli_PrincetonMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PrincetonMember_lbl" xml:lang="en-US">Princeton [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PrincetonMember_lbl" xml:lang="en-US">Princeton [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PrincetonMember_lbl" xml:lang="en-US">Princeton [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EastBrunswickMember" xlink:label="cli_EastBrunswickMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EastBrunswickMember" xlink:to="cli_EastBrunswickMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EastBrunswickMember_lbl" xml:lang="en-US">East Brunswick [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EastBrunswickMember_lbl" xml:lang="en-US">East Brunswick [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EastBrunswickMember_lbl" xml:lang="en-US">East Brunswick [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EdisonMember" xlink:label="cli_EdisonMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EdisonMember" xlink:to="cli_EdisonMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EdisonMember_lbl" xml:lang="en-US">Edison [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EdisonMember_lbl" xml:lang="en-US">Edison [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EdisonMember_lbl" xml:lang="en-US">Edison [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NewBrunswickMember" xlink:label="cli_NewBrunswickMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NewBrunswickMember" xlink:to="cli_NewBrunswickMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NewBrunswickMember_lbl" xml:lang="en-US">New Brunswick [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NewBrunswickMember_lbl" xml:lang="en-US">New Brunswick [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NewBrunswickMember_lbl" xml:lang="en-US">New Brunswick [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PiscatawayMember" xlink:label="cli_PiscatawayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PiscatawayMember" xlink:to="cli_PiscatawayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PiscatawayMember_lbl" xml:lang="en-US">Piscataway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PiscatawayMember_lbl" xml:lang="en-US">Piscataway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PiscatawayMember_lbl" xml:lang="en-US">Piscataway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_PlainsboroMember" xlink:label="cli_PlainsboroMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_PlainsboroMember" xlink:to="cli_PlainsboroMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PlainsboroMember_lbl" xml:lang="en-US">Plainsboro [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PlainsboroMember_lbl" xml:lang="en-US">Plainsboro [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PlainsboroMember_lbl" xml:lang="en-US">Plainsboro [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WoodbridgeMember" xlink:label="cli_WoodbridgeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WoodbridgeMember" xlink:to="cli_WoodbridgeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WoodbridgeMember_lbl" xml:lang="en-US">Woodbridge [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WoodbridgeMember_lbl" xml:lang="en-US">Woodbridge [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WoodbridgeMember_lbl" xml:lang="en-US">Woodbridge [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FreeholdMember" xlink:label="cli_FreeholdMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FreeholdMember" xlink:to="cli_FreeholdMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FreeholdMember_lbl" xml:lang="en-US">Freehold [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FreeholdMember_lbl" xml:lang="en-US">Freehold [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FreeholdMember_lbl" xml:lang="en-US">Freehold [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HolmdelMember" xlink:label="cli_HolmdelMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HolmdelMember" xlink:to="cli_HolmdelMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HolmdelMember_lbl" xml:lang="en-US">Holmdel [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HolmdelMember_lbl" xml:lang="en-US">Holmdel [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HolmdelMember_lbl" xml:lang="en-US">Holmdel [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MiddletownMember" xlink:label="cli_MiddletownMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MiddletownMember" xlink:to="cli_MiddletownMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MiddletownMember_lbl" xml:lang="en-US">Middletown [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MiddletownMember_lbl" xml:lang="en-US">Middletown [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MiddletownMember_lbl" xml:lang="en-US">Middletown [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NeptuneMember" xlink:label="cli_NeptuneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NeptuneMember" xlink:to="cli_NeptuneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NeptuneMember_lbl" xml:lang="en-US">Neptune [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NeptuneMember_lbl" xml:lang="en-US">Neptune [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NeptuneMember_lbl" xml:lang="en-US">Neptune [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WallTownshipMember" xlink:label="cli_WallTownshipMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WallTownshipMember" xlink:to="cli_WallTownshipMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WallTownshipMember_lbl" xml:lang="en-US">Wall Township [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WallTownshipMember_lbl" xml:lang="en-US">Wall Township [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WallTownshipMember_lbl" xml:lang="en-US">Wall Township [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FlorhamParkMember" xlink:label="cli_FlorhamParkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FlorhamParkMember" xlink:to="cli_FlorhamParkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FlorhamParkMember_lbl" xml:lang="en-US">Florham Park [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FlorhamParkMember_lbl" xml:lang="en-US">Florham Park [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FlorhamParkMember_lbl" xml:lang="en-US">Florham Park [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MorrisPlainsMember" xlink:label="cli_MorrisPlainsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MorrisPlainsMember" xlink:to="cli_MorrisPlainsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MorrisPlainsMember_lbl" xml:lang="en-US">Morris Plains [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MorrisPlainsMember_lbl" xml:lang="en-US">Morris Plains [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MorrisPlainsMember_lbl" xml:lang="en-US">Morris Plains [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_MorrisTownshipMember" xlink:label="cli_MorrisTownshipMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_MorrisTownshipMember" xlink:to="cli_MorrisTownshipMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_MorrisTownshipMember_lbl" xml:lang="en-US">Morris Township [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_MorrisTownshipMember_lbl" xml:lang="en-US">Morris Township [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_MorrisTownshipMember_lbl" xml:lang="en-US">Morris Township [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ParsippanyMember" xlink:label="cli_ParsippanyMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ParsippanyMember" xlink:to="cli_ParsippanyMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ParsippanyMember_lbl" xml:lang="en-US">Parsippany [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ParsippanyMember_lbl" xml:lang="en-US">Parsippany [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ParsippanyMember_lbl" xml:lang="en-US">Parsippany [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TotowaMember" xlink:label="cli_TotowaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TotowaMember" xlink:to="cli_TotowaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TotowaMember_lbl" xml:lang="en-US">Totowa [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TotowaMember_lbl" xml:lang="en-US">Totowa [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TotowaMember_lbl" xml:lang="en-US">Totowa [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BaskingRidgeMember" xlink:label="cli_BaskingRidgeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BaskingRidgeMember" xlink:to="cli_BaskingRidgeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BaskingRidgeMember_lbl" xml:lang="en-US">Basking Ridge [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BaskingRidgeMember_lbl" xml:lang="en-US">Basking Ridge [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BaskingRidgeMember_lbl" xml:lang="en-US">Basking Ridge [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_BridgewaterMember" xlink:label="cli_BridgewaterMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_BridgewaterMember" xlink:to="cli_BridgewaterMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BridgewaterMember_lbl" xml:lang="en-US">Bridgewater [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_BridgewaterMember_lbl" xml:lang="en-US">Bridgewater [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_BridgewaterMember_lbl" xml:lang="en-US">Bridgewater [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WarrenMember" xlink:label="cli_WarrenMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WarrenMember" xlink:to="cli_WarrenMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WarrenMember_lbl" xml:lang="en-US">Warren [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WarrenMember_lbl" xml:lang="en-US">Warren [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WarrenMember_lbl" xml:lang="en-US">Warren [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ClarkMember" xlink:label="cli_ClarkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ClarkMember" xlink:to="cli_ClarkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ClarkMember_lbl" xml:lang="en-US">Clark [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ClarkMember_lbl" xml:lang="en-US">Clark [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ClarkMember_lbl" xml:lang="en-US">Clark [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CranfordMember" xlink:label="cli_CranfordMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CranfordMember" xlink:to="cli_CranfordMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CranfordMember_lbl" xml:lang="en-US">Cranford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CranfordMember_lbl" xml:lang="en-US">Cranford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CranfordMember_lbl" xml:lang="en-US">Cranford [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NewProvidenceMember" xlink:label="cli_NewProvidenceMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NewProvidenceMember" xlink:to="cli_NewProvidenceMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NewProvidenceMember_lbl" xml:lang="en-US">New Providence [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NewProvidenceMember_lbl" xml:lang="en-US">New Providence [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NewProvidenceMember_lbl" xml:lang="en-US">New Providence [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RahwayMember" xlink:label="cli_RahwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RahwayMember" xlink:to="cli_RahwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RahwayMember_lbl" xml:lang="en-US">Rahway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RahwayMember_lbl" xml:lang="en-US">Rahway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RahwayMember_lbl" xml:lang="en-US">Rahway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NewYorkMember" xlink:label="cli_NewYorkMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NewYorkMember" xlink:to="cli_NewYorkMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NewYorkMember_lbl" xml:lang="en-US">New York [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NewYorkMember_lbl" xml:lang="en-US">New York [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NewYorkMember_lbl" xml:lang="en-US">New York [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SuffernMember" xlink:label="cli_SuffernMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SuffernMember" xlink:to="cli_SuffernMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SuffernMember_lbl" xml:lang="en-US">Suffern [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SuffernMember_lbl" xml:lang="en-US">Suffern [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SuffernMember_lbl" xml:lang="en-US">Suffern [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElmsfordMember" xlink:label="cli_ElmsfordMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElmsfordMember" xlink:to="cli_ElmsfordMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElmsfordMember_lbl" xml:lang="en-US">Elmsford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElmsfordMember_lbl" xml:lang="en-US">Elmsford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElmsfordMember_lbl" xml:lang="en-US">Elmsford [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HawthorneMember" xlink:label="cli_HawthorneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HawthorneMember" xlink:to="cli_HawthorneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HawthorneMember_lbl" xml:lang="en-US">Hawthorne [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HawthorneMember_lbl" xml:lang="en-US">Hawthorne [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HawthorneMember_lbl" xml:lang="en-US">Hawthorne [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TarrytownMember" xlink:label="cli_TarrytownMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TarrytownMember" xlink:to="cli_TarrytownMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TarrytownMember_lbl" xml:lang="en-US">Tarrytown [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TarrytownMember_lbl" xml:lang="en-US">Tarrytown [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TarrytownMember_lbl" xml:lang="en-US">Tarrytown [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_WhitePlainsMember" xlink:label="cli_WhitePlainsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_WhitePlainsMember" xlink:to="cli_WhitePlainsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_WhitePlainsMember_lbl" xml:lang="en-US">White Plains [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_WhitePlainsMember_lbl" xml:lang="en-US">White Plains [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_WhitePlainsMember_lbl" xml:lang="en-US">White Plains [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_YonkersMember" xlink:label="cli_YonkersMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_YonkersMember" xlink:to="cli_YonkersMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_YonkersMember_lbl" xml:lang="en-US">Yonkers [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_YonkersMember_lbl" xml:lang="en-US">Yonkers [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_YonkersMember_lbl" xml:lang="en-US">Yonkers [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_StamfordMember" xlink:label="cli_StamfordMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_StamfordMember" xlink:to="cli_StamfordMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_StamfordMember_lbl" xml:lang="en-US">Stamford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_StamfordMember_lbl" xml:lang="en-US">Stamford [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_StamfordMember_lbl" xml:lang="en-US">Stamford [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_GreenbeltMember" xlink:label="cli_GreenbeltMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_GreenbeltMember" xlink:to="cli_GreenbeltMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_GreenbeltMember_lbl" xml:lang="en-US">Greenbelt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_GreenbeltMember_lbl" xml:lang="en-US">Greenbelt [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_GreenbeltMember_lbl" xml:lang="en-US">Greenbelt [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_LanhamMember" xlink:label="cli_LanhamMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_LanhamMember" xlink:to="cli_LanhamMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LanhamMember_lbl" xml:lang="en-US">Lanham [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LanhamMember_lbl" xml:lang="en-US">Lanham [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LanhamMember_lbl" xml:lang="en-US">Lanham [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RevereMember" xlink:label="cli_RevereMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RevereMember" xlink:to="cli_RevereMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RevereMember_lbl" xml:lang="en-US">Revere [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RevereMember_lbl" xml:lang="en-US">Revere [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RevereMember_lbl" xml:lang="en-US">Revere [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByAddressAxis" xlink:label="cli_RealEstatePropertyByAddressAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByAddressAxis" xlink:to="cli_RealEstatePropertyByAddressAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByAddressAxis_lbl" xml:lang="en-US">Real Estate Property By Address [Axis]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByAddressAxis_lbl" xml:lang="en-US">Real Estate Property By Address [Axis]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstatePropertyByAddressDomain" xlink:label="cli_RealEstatePropertyByAddressDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstatePropertyByAddressDomain" xlink:to="cli_RealEstatePropertyByAddressDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstatePropertyByAddressDomain_lbl" xml:lang="en-US">Real Estate Property By Address [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstatePropertyByAddressDomain_lbl" xml:lang="en-US">Real Estate Property By Address [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstatePropertyByAddressDomain_lbl" xml:lang="en-US">Real Estate Property By Address [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SeventeenDashSeventeenRouteTwoZeroEightNorthMember" xlink:label="cli_SeventeenDashSeventeenRouteTwoZeroEightNorthMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SeventeenDashSeventeenRouteTwoZeroEightNorthMember" xlink:to="cli_SeventeenDashSeventeenRouteTwoZeroEightNorthMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SeventeenDashSeventeenRouteTwoZeroEightNorthMember_lbl" xml:lang="en-US">Seventeen Dash Seventeen Route Two Zero Eight North [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SeventeenDashSeventeenRouteTwoZeroEightNorthMember_lbl" xml:lang="en-US">Seventeen Dash Seventeen Route Two Zero Eight North [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SeventeenDashSeventeenRouteTwoZeroEightNorthMember_lbl" xml:lang="en-US">17-17 Rte 208 North [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneBridgePlazaMember" xlink:label="cli_OneBridgePlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneBridgePlazaMember" xlink:to="cli_OneBridgePlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneBridgePlazaMember_lbl" xml:lang="en-US">One Bridge Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneBridgePlazaMember_lbl" xml:lang="en-US">One Bridge Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneBridgePlazaMember_lbl" xml:lang="en-US">One Bridge Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoThousandOneHundredFifteenLinwoodAvenueMember" xlink:label="cli_TwoThousandOneHundredFifteenLinwoodAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoThousandOneHundredFifteenLinwoodAvenueMember" xlink:to="cli_TwoThousandOneHundredFifteenLinwoodAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoThousandOneHundredFifteenLinwoodAvenueMember_lbl" xml:lang="en-US">Two Thousand One Hundred Fifteen Linwood Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoThousandOneHundredFifteenLinwoodAvenueMember_lbl" xml:lang="en-US">Two Thousand One Hundred Fifteen Linwood Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoThousandOneHundredFifteenLinwoodAvenueMember_lbl" xml:lang="en-US">2115 Linwood Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredTenClayAvenueMember" xlink:label="cli_TwoHundredTenClayAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredTenClayAvenueMember" xlink:to="cli_TwoHundredTenClayAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredTenClayAvenueMember_lbl" xml:lang="en-US">Two Hundred Ten Clay Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredTenClayAvenueMember_lbl" xml:lang="en-US">Two Hundred Ten Clay Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredTenClayAvenueMember_lbl" xml:lang="en-US">210 Clay Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredThirtyFiveChestnutRidgeRoadMember" xlink:label="cli_OneHundredThirtyFiveChestnutRidgeRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredThirtyFiveChestnutRidgeRoadMember" xlink:to="cli_OneHundredThirtyFiveChestnutRidgeRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredThirtyFiveChestnutRidgeRoadMember_lbl" xml:lang="en-US">One Hundred Thirty Five Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredThirtyFiveChestnutRidgeRoadMember_lbl" xml:lang="en-US">One Hundred Thirty Five Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredThirtyFiveChestnutRidgeRoadMember_lbl" xml:lang="en-US">135 Chestnut Ridge Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FifteenEastMidlandAvenueMember" xlink:label="cli_FifteenEastMidlandAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FifteenEastMidlandAvenueMember" xlink:to="cli_FifteenEastMidlandAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FifteenEastMidlandAvenueMember_lbl" xml:lang="en-US">Fifteen East Midland Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FifteenEastMidlandAvenueMember_lbl" xml:lang="en-US">Fifteen East Midland Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FifteenEastMidlandAvenueMember_lbl" xml:lang="en-US">15 East Midland Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredFortyEastRidgewoodAvenueMember" xlink:label="cli_OneHundredFortyEastRidgewoodAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredFortyEastRidgewoodAvenueMember" xlink:to="cli_OneHundredFortyEastRidgewoodAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredFortyEastRidgewoodAvenueMember_lbl" xml:lang="en-US">One Hundred Forty East Ridgewood Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredFortyEastRidgewoodAvenueMember_lbl" xml:lang="en-US">One Hundred Forty East Ridgewood Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredFortyEastRidgewoodAvenueMember_lbl" xml:lang="en-US">140 East Ridgewood [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredSixtyOneFromRoadMember" xlink:label="cli_FourHundredSixtyOneFromRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredSixtyOneFromRoadMember" xlink:to="cli_FourHundredSixtyOneFromRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredSixtyOneFromRoadMember_lbl" xml:lang="en-US">Four Hundred Sixty One From Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredSixtyOneFromRoadMember_lbl" xml:lang="en-US">Four Hundred Sixty One From Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredSixtyOneFromRoadMember_lbl" xml:lang="en-US">461 From Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixHundredFiftyFromRoadMember" xlink:label="cli_SixHundredFiftyFromRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixHundredFiftyFromRoadMember" xlink:to="cli_SixHundredFiftyFromRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixHundredFiftyFromRoadMember_lbl" xml:lang="en-US">Six Hundred Fifty From Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixHundredFiftyFromRoadMember_lbl" xml:lang="en-US">Six Hundred Fifty From Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixHundredFiftyFromRoadMember_lbl" xml:lang="en-US">650 From Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixtyOneSouthParamusRoadMember" xlink:label="cli_SixtyOneSouthParamusRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixtyOneSouthParamusRoadMember" xlink:to="cli_SixtyOneSouthParamusRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixtyOneSouthParamusRoadMember_lbl" xml:lang="en-US">Sixty One South Paramus Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixtyOneSouthParamusRoadMember_lbl" xml:lang="en-US">Sixty One South Paramus Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixtyOneSouthParamusRoadMember_lbl" xml:lang="en-US">61 South Paramus Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredTwentyWestPassaicStreetMember" xlink:label="cli_OneHundredTwentyWestPassaicStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredTwentyWestPassaicStreetMember" xlink:to="cli_OneHundredTwentyWestPassaicStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredTwentyWestPassaicStreetMember_lbl" xml:lang="en-US">One Hundred Twenty West Passaic Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredTwentyWestPassaicStreetMember_lbl" xml:lang="en-US">One Hundred Twenty West Passaic Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredTwentyWestPassaicStreetMember_lbl" xml:lang="en-US">120 West Passaic Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredSixtyFiveWestPassaicStreetMember" xlink:label="cli_ThreeHundredSixtyFiveWestPassaicStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredSixtyFiveWestPassaicStreetMember" xlink:to="cli_ThreeHundredSixtyFiveWestPassaicStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredSixtyFiveWestPassaicStreetMember_lbl" xml:lang="en-US">Three Hundred Sixty Five West Passaic Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredSixtyFiveWestPassaicStreetMember_lbl" xml:lang="en-US">Three Hundred Sixty Five West Passaic Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredSixtyFiveWestPassaicStreetMember_lbl" xml:lang="en-US">365 West Passaic Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredNinetyFiveWestPassaicStreetMember" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredNinetyFiveWestPassaicStreetMember" xlink:to="cli_ThreeHundredNinetyFiveWestPassaicStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicStreetMember_lbl" xml:lang="en-US">Three Hundred Ninety Five West Passaic Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicStreetMember_lbl" xml:lang="en-US">Three Hundred Ninety Five West Passaic Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredNinetyFiveWestPassaicStreetMember_lbl" xml:lang="en-US">395 West Passaic Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneLakeStreetMember" xlink:label="cli_OneLakeStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneLakeStreetMember" xlink:to="cli_OneLakeStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneLakeStreetMember_lbl" xml:lang="en-US">One Lake Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneLakeStreetMember_lbl" xml:lang="en-US">One Lake Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneLakeStreetMember_lbl" xml:lang="en-US">1 Lake Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TenMountainviewRoadMember" xlink:label="cli_TenMountainviewRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TenMountainviewRoadMember" xlink:to="cli_TenMountainviewRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TenMountainviewRoadMember_lbl" xml:lang="en-US">Ten Mountainview Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TenMountainviewRoadMember_lbl" xml:lang="en-US">Ten Mountainview Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TenMountainviewRoadMember_lbl" xml:lang="en-US">10 Mountainview Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredChestnutRidgeRoadMember" xlink:label="cli_FourHundredChestnutRidgeRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredChestnutRidgeRoadMember" xlink:to="cli_FourHundredChestnutRidgeRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredChestnutRidgeRoadMember_lbl" xml:lang="en-US">Four Hundred Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredChestnutRidgeRoadMember_lbl" xml:lang="en-US">Four Hundred Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredChestnutRidgeRoadMember_lbl" xml:lang="en-US">400 Chestnut Ridge Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredSeventyChestnutRidgeRoadMember" xlink:label="cli_FourHundredSeventyChestnutRidgeRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredSeventyChestnutRidgeRoadMember" xlink:to="cli_FourHundredSeventyChestnutRidgeRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredSeventyChestnutRidgeRoadMember_lbl" xml:lang="en-US">Four Hundred Seventy Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredSeventyChestnutRidgeRoadMember_lbl" xml:lang="en-US">Four Hundred Seventy Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredSeventyChestnutRidgeRoadMember_lbl" xml:lang="en-US">470 Chestnut Ridge Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredThirtyChestnutRidgeRoadMember" xlink:label="cli_FiveHundredThirtyChestnutRidgeRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredThirtyChestnutRidgeRoadMember" xlink:to="cli_FiveHundredThirtyChestnutRidgeRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredThirtyChestnutRidgeRoadMember_lbl" xml:lang="en-US">Five Hundred Thirty Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredThirtyChestnutRidgeRoadMember_lbl" xml:lang="en-US">Five Hundred Thirty Chestnut Ridge Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredThirtyChestnutRidgeRoadMember_lbl" xml:lang="en-US">530 Chestnut Ridge Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiftyTiceBoulevardMember" xlink:label="cli_FiftyTiceBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiftyTiceBoulevardMember" xlink:to="cli_FiftyTiceBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiftyTiceBoulevardMember_lbl" xml:lang="en-US">Fifty Tice Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiftyTiceBoulevardMember_lbl" xml:lang="en-US">Fifty Tice Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiftyTiceBoulevardMember_lbl" xml:lang="en-US">50 Tice Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredTiceBoulevardMember" xlink:label="cli_ThreeHundredTiceBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredTiceBoulevardMember" xlink:to="cli_ThreeHundredTiceBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredTiceBoulevardMember_lbl" xml:lang="en-US">Three Hundred Tice Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredTiceBoulevardMember_lbl" xml:lang="en-US">Three Hundred Tice Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredTiceBoulevardMember_lbl" xml:lang="en-US">300 Tice Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeTerriLaneMember" xlink:label="cli_ThreeTerriLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeTerriLaneMember" xlink:to="cli_ThreeTerriLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeTerriLaneMember_lbl" xml:lang="en-US">Three Terri Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeTerriLaneMember_lbl" xml:lang="en-US">Three Terri Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeTerriLaneMember_lbl" xml:lang="en-US">3 Terri Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveTerriLaneMember" xlink:label="cli_FiveTerriLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveTerriLaneMember" xlink:to="cli_FiveTerriLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveTerriLaneMember_lbl" xml:lang="en-US">Five Terri Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveTerriLaneMember_lbl" xml:lang="en-US">Five Terri Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveTerriLaneMember_lbl" xml:lang="en-US">5 Terri Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoCommerceDriveMember" xlink:label="cli_TwoCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoCommerceDriveMember" xlink:to="cli_TwoCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoCommerceDriveMember_lbl" xml:lang="en-US">Two Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoCommerceDriveMember_lbl" xml:lang="en-US">Two Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoCommerceDriveMember_lbl" xml:lang="en-US">2 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredOneCommerceDriveMember" xlink:label="cli_OneHundredOneCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredOneCommerceDriveMember" xlink:to="cli_OneHundredOneCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredOneCommerceDriveMember_lbl" xml:lang="en-US">One Hundred One Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredOneCommerceDriveMember_lbl" xml:lang="en-US">One Hundred One Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredOneCommerceDriveMember_lbl" xml:lang="en-US">101 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredTwoCommerceDriveMember" xlink:label="cli_OneHundredTwoCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredTwoCommerceDriveMember" xlink:to="cli_OneHundredTwoCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredTwoCommerceDriveMember_lbl" xml:lang="en-US">One Hundred Two Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredTwoCommerceDriveMember_lbl" xml:lang="en-US">One Hundred Two Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredTwoCommerceDriveMember_lbl" xml:lang="en-US">102 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredOneCommerceDriveMember" xlink:label="cli_TwoHundredOneCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredOneCommerceDriveMember" xlink:to="cli_TwoHundredOneCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredOneCommerceDriveMember_lbl" xml:lang="en-US">Two Hundred One Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredOneCommerceDriveMember_lbl" xml:lang="en-US">Two Hundred One Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredOneCommerceDriveMember_lbl" xml:lang="en-US">201 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredTwoCommerceDriveMember" xlink:label="cli_TwoHundredTwoCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredTwoCommerceDriveMember" xlink:to="cli_TwoHundredTwoCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredTwoCommerceDriveMember_lbl" xml:lang="en-US">Two Hundred Two Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredTwoCommerceDriveMember_lbl" xml:lang="en-US">Two Hundred Two Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredTwoCommerceDriveMember_lbl" xml:lang="en-US">202 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneExecutiveDriveMember" xlink:label="cli_OneExecutiveDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneExecutiveDriveMember" xlink:to="cli_OneExecutiveDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneExecutiveDriveMember_lbl" xml:lang="en-US">One Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneExecutiveDriveMember_lbl" xml:lang="en-US">One Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneExecutiveDriveMember_lbl" xml:lang="en-US">1 Executive Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoExecutiveDriveMember" xlink:label="cli_TwoExecutiveDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoExecutiveDriveMember" xlink:to="cli_TwoExecutiveDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoExecutiveDriveMember_lbl" xml:lang="en-US">Two Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoExecutiveDriveMember_lbl" xml:lang="en-US">Two Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoExecutiveDriveMember_lbl" xml:lang="en-US">2 Executive Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredOneExecutiveDriveMember" xlink:label="cli_OneHundredOneExecutiveDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredOneExecutiveDriveMember" xlink:to="cli_OneHundredOneExecutiveDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredOneExecutiveDriveMember_lbl" xml:lang="en-US">One Hundred One Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredOneExecutiveDriveMember_lbl" xml:lang="en-US">One Hundred One Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredOneExecutiveDriveMember_lbl" xml:lang="en-US">101 Executive Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredTwoExecutiveDriveMember" xlink:label="cli_OneHundredTwoExecutiveDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredTwoExecutiveDriveMember" xlink:to="cli_OneHundredTwoExecutiveDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredTwoExecutiveDriveMember_lbl" xml:lang="en-US">One Hundred Two Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredTwoExecutiveDriveMember_lbl" xml:lang="en-US">One Hundred Two Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredTwoExecutiveDriveMember_lbl" xml:lang="en-US">102 Executive Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredTwentyFiveExecutiveDriveMember" xlink:label="cli_TwoHundredTwentyFiveExecutiveDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredTwentyFiveExecutiveDriveMember" xlink:to="cli_TwoHundredTwentyFiveExecutiveDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredTwentyFiveExecutiveDriveMember_lbl" xml:lang="en-US">Two Hundred Twenty Five Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredTwentyFiveExecutiveDriveMember_lbl" xml:lang="en-US">Two Hundred Twenty Five Executive Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredTwentyFiveExecutiveDriveMember_lbl" xml:lang="en-US">225 Executive Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NinetySevenFosterRoadMember" xlink:label="cli_NinetySevenFosterRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NinetySevenFosterRoadMember" xlink:to="cli_NinetySevenFosterRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NinetySevenFosterRoadMember_lbl" xml:lang="en-US">Ninety Seven Foster Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NinetySevenFosterRoadMember_lbl" xml:lang="en-US">Ninety Seven Foster Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NinetySevenFosterRoadMember_lbl" xml:lang="en-US">97 Foster Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandFiveHundredSevenLancerDriveMember" xlink:label="cli_OneThousandFiveHundredSevenLancerDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandFiveHundredSevenLancerDriveMember" xlink:to="cli_OneThousandFiveHundredSevenLancerDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandFiveHundredSevenLancerDriveMember_lbl" xml:lang="en-US">One Thousand Five Hundred Seven Lancer Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandFiveHundredSevenLancerDriveMember_lbl" xml:lang="en-US">One Thousand Five Hundred Seven Lancer Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandFiveHundredSevenLancerDriveMember_lbl" xml:lang="en-US">1507 Lancer Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandTwoHundredFortyFiveNorthChurchStreetMember" xlink:label="cli_OneThousandTwoHundredFortyFiveNorthChurchStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandTwoHundredFortyFiveNorthChurchStreetMember" xlink:to="cli_OneThousandTwoHundredFortyFiveNorthChurchStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandTwoHundredFortyFiveNorthChurchStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Forty Five North Church Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandTwoHundredFortyFiveNorthChurchStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Forty Five North Church Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandTwoHundredFortyFiveNorthChurchStreetMember_lbl" xml:lang="en-US">1245 North Church Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandTwoHundredFortySevenNorthChurchStreetMember" xlink:label="cli_OneThousandTwoHundredFortySevenNorthChurchStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandTwoHundredFortySevenNorthChurchStreetMember" xlink:to="cli_OneThousandTwoHundredFortySevenNorthChurchStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandTwoHundredFortySevenNorthChurchStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Forty Seven North Church Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandTwoHundredFortySevenNorthChurchStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Forty Seven North Church Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandTwoHundredFortySevenNorthChurchStreetMember_lbl" xml:lang="en-US">1247 North Church Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandTwoHundredFiftySixNorthChurchStreetMember" xlink:label="cli_OneThousandTwoHundredFiftySixNorthChurchStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandTwoHundredFiftySixNorthChurchStreetMember" xlink:to="cli_OneThousandTwoHundredFiftySixNorthChurchStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandTwoHundredFiftySixNorthChurchStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Fifty Six North Church Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandTwoHundredFiftySixNorthChurchStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Fifty Six North Church Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandTwoHundredFiftySixNorthChurchStreetMember_lbl" xml:lang="en-US">1256 North Church Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightHundredFortyNorthLenolaRoadMember" xlink:label="cli_EightHundredFortyNorthLenolaRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightHundredFortyNorthLenolaRoadMember" xlink:to="cli_EightHundredFortyNorthLenolaRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightHundredFortyNorthLenolaRoadMember_lbl" xml:lang="en-US">Eight Hundred Forty North Lenola Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightHundredFortyNorthLenolaRoadMember_lbl" xml:lang="en-US">Eight Hundred Forty North Lenola Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightHundredFortyNorthLenolaRoadMember_lbl" xml:lang="en-US">840 North Lenola Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightHundredFortyFourNorthLenolaRoadMember" xlink:label="cli_EightHundredFortyFourNorthLenolaRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightHundredFortyFourNorthLenolaRoadMember" xlink:to="cli_EightHundredFortyFourNorthLenolaRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightHundredFortyFourNorthLenolaRoadMember_lbl" xml:lang="en-US">Eight Hundred Forty Four North Lenola Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightHundredFortyFourNorthLenolaRoadMember_lbl" xml:lang="en-US">Eight Hundred Forty Four North Lenola Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightHundredFortyFourNorthLenolaRoadMember_lbl" xml:lang="en-US">844 North Lenola Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NineHundredFifteenNorthLenolaRoadMember" xlink:label="cli_NineHundredFifteenNorthLenolaRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NineHundredFifteenNorthLenolaRoadMember" xlink:to="cli_NineHundredFifteenNorthLenolaRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NineHundredFifteenNorthLenolaRoadMember_lbl" xml:lang="en-US">Nine Hundred Fifteen North Lenola Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NineHundredFifteenNorthLenolaRoadMember_lbl" xml:lang="en-US">Nine Hundred Fifteen North Lenola Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NineHundredFifteenNorthLenolaRoadMember_lbl" xml:lang="en-US">915 North Lenola Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoTwosomeDriveMember" xlink:label="cli_TwoTwosomeDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoTwosomeDriveMember" xlink:to="cli_TwoTwosomeDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoTwosomeDriveMember_lbl" xml:lang="en-US">Two Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoTwosomeDriveMember_lbl" xml:lang="en-US">Two Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoTwosomeDriveMember_lbl" xml:lang="en-US">2 Twosome Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirtyTwosomeDriveMember" xlink:label="cli_ThirtyTwosomeDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirtyTwosomeDriveMember" xlink:to="cli_ThirtyTwosomeDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirtyTwosomeDriveMember_lbl" xml:lang="en-US">Thirty Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirtyTwosomeDriveMember_lbl" xml:lang="en-US">Thirty Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirtyTwosomeDriveMember_lbl" xml:lang="en-US">30 Twosome Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirtyOneTwosomeDriveMember" xlink:label="cli_ThirtyOneTwosomeDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirtyOneTwosomeDriveMember" xlink:to="cli_ThirtyOneTwosomeDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirtyOneTwosomeDriveMember_lbl" xml:lang="en-US">Thirty One Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirtyOneTwosomeDriveMember_lbl" xml:lang="en-US">Thirty One Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirtyOneTwosomeDriveMember_lbl" xml:lang="en-US">31 Twosome Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FortyTwosomeDriveMember" xlink:label="cli_FortyTwosomeDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FortyTwosomeDriveMember" xlink:to="cli_FortyTwosomeDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FortyTwosomeDriveMember_lbl" xml:lang="en-US">Forty Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FortyTwosomeDriveMember_lbl" xml:lang="en-US">Forty Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FortyTwosomeDriveMember_lbl" xml:lang="en-US">40 Twosome Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FortyOneTwosomeDriveMember" xlink:label="cli_FortyOneTwosomeDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FortyOneTwosomeDriveMember" xlink:to="cli_FortyOneTwosomeDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FortyOneTwosomeDriveMember_lbl" xml:lang="en-US">Forty One Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FortyOneTwosomeDriveMember_lbl" xml:lang="en-US">Forty One Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FortyOneTwosomeDriveMember_lbl" xml:lang="en-US">41 Twosome Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiftyTwosomeDriveMember" xlink:label="cli_FiftyTwosomeDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiftyTwosomeDriveMember" xlink:to="cli_FiftyTwosomeDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiftyTwosomeDriveMember_lbl" xml:lang="en-US">Fifty Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiftyTwosomeDriveMember_lbl" xml:lang="en-US">Fifty Twosome Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiftyTwosomeDriveMember_lbl" xml:lang="en-US">50 Twosome Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandFourHundredFiftyOneMetropolitanDriveMember" xlink:label="cli_OneThousandFourHundredFiftyOneMetropolitanDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandFourHundredFiftyOneMetropolitanDriveMember" xlink:to="cli_OneThousandFourHundredFiftyOneMetropolitanDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandFourHundredFiftyOneMetropolitanDriveMember_lbl" xml:lang="en-US">One Thousand Four Hundred Fifty One Metropolitan Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandFourHundredFiftyOneMetropolitanDriveMember_lbl" xml:lang="en-US">One Thousand Four Hundred Fifty One Metropolitan Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandFourHundredFiftyOneMetropolitanDriveMember_lbl" xml:lang="en-US">1451 Metropolitan Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredFiftyJFKennedyParkwayMember" xlink:label="cli_OneHundredFiftyJFKennedyParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredFiftyJFKennedyParkwayMember" xlink:to="cli_OneHundredFiftyJFKennedyParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredFiftyJFKennedyParkwayMember_lbl" xml:lang="en-US">One Hundred Fifty J.F. Kennedy Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredFiftyJFKennedyParkwayMember_lbl" xml:lang="en-US">One Hundred Fifty J F Kennedy Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredFiftyJFKennedyParkwayMember_lbl" xml:lang="en-US">150 J.F. Kennedy Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourBeckerFarmRoadMember" xlink:label="cli_FourBeckerFarmRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourBeckerFarmRoadMember" xlink:to="cli_FourBeckerFarmRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourBeckerFarmRoadMember_lbl" xml:lang="en-US">Four Becker Farm Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourBeckerFarmRoadMember_lbl" xml:lang="en-US">Four Becker Farm Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourBeckerFarmRoadMember_lbl" xml:lang="en-US">4 Becker Farm Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveBeckerFarmRoadMember" xlink:label="cli_FiveBeckerFarmRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveBeckerFarmRoadMember" xlink:to="cli_FiveBeckerFarmRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveBeckerFarmRoadMember_lbl" xml:lang="en-US">Five Becker Farm Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveBeckerFarmRoadMember_lbl" xml:lang="en-US">Five Becker Farm Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveBeckerFarmRoadMember_lbl" xml:lang="en-US">5 Becker Farm Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixBeckerFarmRoadMember" xlink:label="cli_SixBeckerFarmRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixBeckerFarmRoadMember" xlink:to="cli_SixBeckerFarmRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixBeckerFarmRoadMember_lbl" xml:lang="en-US">Six Becker Farm Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixBeckerFarmRoadMember_lbl" xml:lang="en-US">Six Becker Farm Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixBeckerFarmRoadMember_lbl" xml:lang="en-US">6 Becker Farm Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredOneEisenhowerParkwayMember" xlink:label="cli_OneHundredOneEisenhowerParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredOneEisenhowerParkwayMember" xlink:to="cli_OneHundredOneEisenhowerParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredOneEisenhowerParkwayMember_lbl" xml:lang="en-US">One Hundred One Eisenhower Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredOneEisenhowerParkwayMember_lbl" xml:lang="en-US">One Hundred One Eisenhower Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredOneEisenhowerParkwayMember_lbl" xml:lang="en-US">101 Eisenhower Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredThreeEisenhowerParkwayMember" xlink:label="cli_OneHundredThreeEisenhowerParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredThreeEisenhowerParkwayMember" xlink:to="cli_OneHundredThreeEisenhowerParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredThreeEisenhowerParkwayMember_lbl" xml:lang="en-US">One Hundred Three Eisenhower Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredThreeEisenhowerParkwayMember_lbl" xml:lang="en-US">One Hundred Three Eisenhower Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredThreeEisenhowerParkwayMember_lbl" xml:lang="en-US">103 Eisenhower Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredFiveEisenhowerParkwayMember" xlink:label="cli_OneHundredFiveEisenhowerParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredFiveEisenhowerParkwayMember" xlink:to="cli_OneHundredFiveEisenhowerParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredFiveEisenhowerParkwayMember_lbl" xml:lang="en-US">One Hundred Five Eisenhower Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredFiveEisenhowerParkwayMember_lbl" xml:lang="en-US">One Hundred Five Eisenhower Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredFiveEisenhowerParkwayMember_lbl" xml:lang="en-US">105 Eisenhower Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SeventyFiveLivingstonAvenueMember" xlink:label="cli_SeventyFiveLivingstonAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SeventyFiveLivingstonAvenueMember" xlink:to="cli_SeventyFiveLivingstonAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SeventyFiveLivingstonAvenueMember_lbl" xml:lang="en-US">Seventy Five Livingston Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SeventyFiveLivingstonAvenueMember_lbl" xml:lang="en-US">Seventy Five Livingston Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SeventyFiveLivingstonAvenueMember_lbl" xml:lang="en-US">75 Livingston Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightyFiveLivingstonAvenueMember" xlink:label="cli_EightyFiveLivingstonAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightyFiveLivingstonAvenueMember" xlink:to="cli_EightyFiveLivingstonAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightyFiveLivingstonAvenueMember_lbl" xml:lang="en-US">Eighty Five Livingston Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightyFiveLivingstonAvenueMember_lbl" xml:lang="en-US">Eighty Five Livingston Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightyFiveLivingstonAvenueMember_lbl" xml:lang="en-US">85 Livingston Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HarborsideFinancialCenterPlazaOneMember" xlink:label="cli_HarborsideFinancialCenterPlazaOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HarborsideFinancialCenterPlazaOneMember" xlink:to="cli_HarborsideFinancialCenterPlazaOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HarborsideFinancialCenterPlazaOneMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HarborsideFinancialCenterPlazaOneMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HarborsideFinancialCenterPlazaOneMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza 1 [Member]</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HarborsideFinancialCenterPlazaTwoMember" xlink:to="cli_HarborsideFinancialCenterPlazaTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HarborsideFinancialCenterPlazaTwoMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HarborsideFinancialCenterPlazaTwoMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HarborsideFinancialCenterPlazaTwoMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_HarborsideFinancialCenterPlazaThreeMember" xlink:label="cli_HarborsideFinancialCenterPlazaThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_HarborsideFinancialCenterPlazaThreeMember" xlink:to="cli_HarborsideFinancialCenterPlazaThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_HarborsideFinancialCenterPlazaThreeMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_HarborsideFinancialCenterPlazaThreeMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_HarborsideFinancialCenterPlazaThreeMember_lbl" xml:lang="en-US">Harborside Financial Center Plaza 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredOneHudsonStreetMember" xlink:label="cli_OneHundredOneHudsonStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredOneHudsonStreetMember" xlink:to="cli_OneHundredOneHudsonStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredOneHudsonStreetMember_lbl" xml:lang="en-US">One Hundred One Hudson Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredOneHudsonStreetMember_lbl" xml:lang="en-US">One Hundred One Hudson Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredOneHudsonStreetMember_lbl" xml:lang="en-US">101 Hudson Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredAvenueAtPortImperialMember" xlink:label="cli_FiveHundredAvenueAtPortImperialMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredAvenueAtPortImperialMember" xlink:to="cli_FiveHundredAvenueAtPortImperialMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredAvenueAtPortImperialMember_lbl" xml:lang="en-US">500 Avenue At Port Imperial [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredAvenueAtPortImperialMember_lbl" xml:lang="en-US">Five Hundred Avenue At Port Imperial [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredAvenueAtPortImperialMember_lbl" xml:lang="en-US">500 Avenue At Port Imperial [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeAaaDriveMember" xlink:label="cli_ThreeAaaDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeAaaDriveMember" xlink:to="cli_ThreeAaaDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeAaaDriveMember_lbl" xml:lang="en-US">Three AAA Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeAaaDriveMember_lbl" xml:lang="en-US">Three Aaa Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeAaaDriveMember_lbl" xml:lang="en-US">3 AAA Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredHorizonCenterBoulevardMember" xlink:label="cli_OneHundredHorizonCenterBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredHorizonCenterBoulevardMember" xlink:to="cli_OneHundredHorizonCenterBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredHorizonCenterBoulevardMember_lbl" xml:lang="en-US">One Hundred Horizon Center Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredHorizonCenterBoulevardMember_lbl" xml:lang="en-US">One Hundred Horizon Center Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredHorizonCenterBoulevardMember_lbl" xml:lang="en-US">100 Horizon Center Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredHorizonDriveMember" xlink:label="cli_TwoHundredHorizonDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredHorizonDriveMember" xlink:to="cli_TwoHundredHorizonDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredHorizonDriveMember_lbl" xml:lang="en-US">Two Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredHorizonDriveMember_lbl" xml:lang="en-US">Two Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredHorizonDriveMember_lbl" xml:lang="en-US">200 Horizon Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredHorizonDriveMember" xlink:label="cli_ThreeHundredHorizonDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredHorizonDriveMember" xlink:to="cli_ThreeHundredHorizonDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredHorizonDriveMember_lbl" xml:lang="en-US">Three Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredHorizonDriveMember_lbl" xml:lang="en-US">Three Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredHorizonDriveMember_lbl" xml:lang="en-US">300 Horizon Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredHorizonDriveMember" xlink:label="cli_FiveHundredHorizonDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredHorizonDriveMember" xlink:to="cli_FiveHundredHorizonDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredHorizonDriveMember_lbl" xml:lang="en-US">Five Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredHorizonDriveMember_lbl" xml:lang="en-US">Five Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredHorizonDriveMember_lbl" xml:lang="en-US">500 Horizon Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixHundredHorizonDriveMember" xlink:label="cli_SixHundredHorizonDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixHundredHorizonDriveMember" xlink:to="cli_SixHundredHorizonDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixHundredHorizonDriveMember_lbl" xml:lang="en-US">Six Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixHundredHorizonDriveMember_lbl" xml:lang="en-US">Six Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixHundredHorizonDriveMember_lbl" xml:lang="en-US">600 Horizon Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenHundredHorizonDriveMember" xlink:label="cli_SevenHundredHorizonDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenHundredHorizonDriveMember" xlink:to="cli_SevenHundredHorizonDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenHundredHorizonDriveMember_lbl" xml:lang="en-US">Seven Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenHundredHorizonDriveMember_lbl" xml:lang="en-US">Seven Hundred Horizon Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenHundredHorizonDriveMember_lbl" xml:lang="en-US">700 Horizon Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoSouthGoldDriveMember" xlink:label="cli_TwoSouthGoldDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoSouthGoldDriveMember" xlink:to="cli_TwoSouthGoldDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoSouthGoldDriveMember_lbl" xml:lang="en-US">Two South Gold Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoSouthGoldDriveMember_lbl" xml:lang="en-US">Two South Gold Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoSouthGoldDriveMember_lbl" xml:lang="en-US">2 South Gold Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredThreeCarnegieCenterMember" xlink:label="cli_OneHundredThreeCarnegieCenterMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredThreeCarnegieCenterMember" xlink:to="cli_OneHundredThreeCarnegieCenterMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredThreeCarnegieCenterMember_lbl" xml:lang="en-US">One Hundred Three Carnegie Center [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredThreeCarnegieCenterMember_lbl" xml:lang="en-US">One Hundred Three Carnegie Center [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredThreeCarnegieCenterMember_lbl" xml:lang="en-US">103 Carnegie Center [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoIndependenceWayMember" xlink:label="cli_TwoIndependenceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoIndependenceWayMember" xlink:to="cli_TwoIndependenceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoIndependenceWayMember_lbl" xml:lang="en-US">Two Independence Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoIndependenceWayMember_lbl" xml:lang="en-US">Two Independence Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoIndependenceWayMember_lbl" xml:lang="en-US">2 Independence Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeIndependenceWayMember" xlink:label="cli_ThreeIndependenceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeIndependenceWayMember" xlink:to="cli_ThreeIndependenceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeIndependenceWayMember_lbl" xml:lang="en-US">Three Independence Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeIndependenceWayMember_lbl" xml:lang="en-US">Three Independence Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeIndependenceWayMember_lbl" xml:lang="en-US">3 Independence Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredOverlookCenterMember" xlink:label="cli_OneHundredOverlookCenterMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredOverlookCenterMember" xlink:to="cli_OneHundredOverlookCenterMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredOverlookCenterMember_lbl" xml:lang="en-US">One Hundred Overlook Center [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredOverlookCenterMember_lbl" xml:lang="en-US">One Hundred Overlook Center [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredOverlookCenterMember_lbl" xml:lang="en-US">100 Overlook Center [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveVaughnDriveMember" xlink:label="cli_FiveVaughnDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveVaughnDriveMember" xlink:to="cli_FiveVaughnDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveVaughnDriveMember_lbl" xml:lang="en-US">Five Vaughn Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveVaughnDriveMember_lbl" xml:lang="en-US">Five Vaughn Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveVaughnDriveMember_lbl" xml:lang="en-US">5 Vaughn Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredSeventySevenSummerhillRoadMember" xlink:label="cli_ThreeHundredSeventySevenSummerhillRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredSeventySevenSummerhillRoadMember" xlink:to="cli_ThreeHundredSeventySevenSummerhillRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredSeventySevenSummerhillRoadMember_lbl" xml:lang="en-US">Three Hundred Seventy Seven Summerhill Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredSeventySevenSummerhillRoadMember_lbl" xml:lang="en-US">Three Hundred Seventy Seven Summerhill Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredSeventySevenSummerhillRoadMember_lbl" xml:lang="en-US">377 Summerhill Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredFortyThreeThornallStreetMember" xlink:label="cli_ThreeHundredFortyThreeThornallStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredFortyThreeThornallStreetMember" xlink:to="cli_ThreeHundredFortyThreeThornallStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredFortyThreeThornallStreetMember_lbl" xml:lang="en-US">Three Hundred Forty Three Thornall Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredFortyThreeThornallStreetMember_lbl" xml:lang="en-US">Three Hundred Forty Three Thornall Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredFortyThreeThornallStreetMember_lbl" xml:lang="en-US">343 Thornall Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirtyKnightsbridgeRoadBuildingThreeMember" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirtyKnightsbridgeRoadBuildingThreeMember" xlink:to="cli_ThirtyKnightsbridgeRoadBuildingThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingThreeMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road, Building Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingThreeMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road Building Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingThreeMember_lbl" xml:lang="en-US">30 Knightsbridge Road, Building 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirtyKnightsbridgeRoadBuildingFourMember" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFourMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirtyKnightsbridgeRoadBuildingFourMember" xlink:to="cli_ThirtyKnightsbridgeRoadBuildingFourMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFourMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road, Building Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFourMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road Building Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFourMember_lbl" xml:lang="en-US">30 Knightsbridge Road, Building 4 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirtyKnightsbridgeRoadBuildingFiveMember" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFiveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirtyKnightsbridgeRoadBuildingFiveMember" xlink:to="cli_ThirtyKnightsbridgeRoadBuildingFiveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFiveMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road, Building Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFiveMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road Building Five [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingFiveMember_lbl" xml:lang="en-US">30 Knightsbridge Road, Building 5 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThirtyKnightsbridgeRoadBuildingSixMember" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingSixMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThirtyKnightsbridgeRoadBuildingSixMember" xlink:to="cli_ThirtyKnightsbridgeRoadBuildingSixMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingSixMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road, Building Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingSixMember_lbl" xml:lang="en-US">Thirty Knightsbridge Road Building Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThirtyKnightsbridgeRoadBuildingSixMember_lbl" xml:lang="en-US">30 Knightsbridge Road, Building 6 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredCollegeRoadEastMember" xlink:label="cli_FiveHundredCollegeRoadEastMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredCollegeRoadEastMember" xlink:to="cli_FiveHundredCollegeRoadEastMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredCollegeRoadEastMember_lbl" xml:lang="en-US">Five Hundred College Road East [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredCollegeRoadEastMember_lbl" xml:lang="en-US">Five Hundred College Road East [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredCollegeRoadEastMember_lbl" xml:lang="en-US">500 College Road East [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredEightyOneMainStreetMember" xlink:label="cli_FiveHundredEightyOneMainStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredEightyOneMainStreetMember" xlink:to="cli_FiveHundredEightyOneMainStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredEightyOneMainStreetMember_lbl" xml:lang="en-US">Five Hundred Eighty One Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredEightyOneMainStreetMember_lbl" xml:lang="en-US">Five Hundred Eighty One Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredEightyOneMainStreetMember_lbl" xml:lang="en-US">581 Main Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoParagonWayMember" xlink:label="cli_TwoParagonWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoParagonWayMember" xlink:to="cli_TwoParagonWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoParagonWayMember_lbl" xml:lang="en-US">Two Paragon Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoParagonWayMember_lbl" xml:lang="en-US">Two Paragon Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoParagonWayMember_lbl" xml:lang="en-US">2 Paragon Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeParagonWayMember" xlink:label="cli_ThreeParagonWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeParagonWayMember" xlink:to="cli_ThreeParagonWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeParagonWayMember_lbl" xml:lang="en-US">Three Paragon Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeParagonWayMember_lbl" xml:lang="en-US">Three Paragon Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeParagonWayMember_lbl" xml:lang="en-US">3 Paragon Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourParagonWayMember" xlink:label="cli_FourParagonWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourParagonWayMember" xlink:to="cli_FourParagonWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourParagonWayMember_lbl" xml:lang="en-US">Four Paragon Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourParagonWayMember_lbl" xml:lang="en-US">Four Paragon Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourParagonWayMember_lbl" xml:lang="en-US">4 Paragon Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredWillowbrookRoadMember" xlink:label="cli_OneHundredWillowbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredWillowbrookRoadMember" xlink:to="cli_OneHundredWillowbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredWillowbrookRoadMember_lbl" xml:lang="en-US">One Hundred Willowbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredWillowbrookRoadMember_lbl" xml:lang="en-US">One Hundred Willowbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredWillowbrookRoadMember_lbl" xml:lang="en-US">100 Willowbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneRiverCenterBuildingOneMember" xlink:label="cli_OneRiverCenterBuildingOneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneRiverCenterBuildingOneMember" xlink:to="cli_OneRiverCenterBuildingOneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneRiverCenterBuildingOneMember_lbl" xml:lang="en-US">One River Center, Building One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneRiverCenterBuildingOneMember_lbl" xml:lang="en-US">One River Center Building One [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneRiverCenterBuildingOneMember_lbl" xml:lang="en-US">One River Center, Building 1 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneRiverCenterBuildingTwoMember" xlink:label="cli_OneRiverCenterBuildingTwoMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneRiverCenterBuildingTwoMember" xlink:to="cli_OneRiverCenterBuildingTwoMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneRiverCenterBuildingTwoMember_lbl" xml:lang="en-US">One River Center, Building Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneRiverCenterBuildingTwoMember_lbl" xml:lang="en-US">One River Center Building Two [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneRiverCenterBuildingTwoMember_lbl" xml:lang="en-US">One River Center, Building 2 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneRiverCenterBuildingThreeMember" xlink:label="cli_OneRiverCenterBuildingThreeMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneRiverCenterBuildingThreeMember" xlink:to="cli_OneRiverCenterBuildingThreeMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneRiverCenterBuildingThreeMember_lbl" xml:lang="en-US">One River Center, Building Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneRiverCenterBuildingThreeMember_lbl" xml:lang="en-US">One River Center Building Three [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneRiverCenterBuildingThreeMember_lbl" xml:lang="en-US">One River Center, Building 3 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeThousandSixHundredRouteSixtySixMember" xlink:label="cli_ThreeThousandSixHundredRouteSixtySixMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeThousandSixHundredRouteSixtySixMember" xlink:to="cli_ThreeThousandSixHundredRouteSixtySixMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeThousandSixHundredRouteSixtySixMember_lbl" xml:lang="en-US">Three Thousand Six Hundred Route Sixty Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeThousandSixHundredRouteSixtySixMember_lbl" xml:lang="en-US">Three Thousand Six Hundred Route Sixty Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeThousandSixHundredRouteSixtySixMember_lbl" xml:lang="en-US">3600 Route 66 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandThreeHundredFiveCampusParkwayMember" xlink:label="cli_OneThousandThreeHundredFiveCampusParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandThreeHundredFiveCampusParkwayMember" xlink:to="cli_OneThousandThreeHundredFiveCampusParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandThreeHundredFiveCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Five Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandThreeHundredFiveCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Five Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandThreeHundredFiveCampusParkwayMember_lbl" xml:lang="en-US">1305 Campus Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandThreeHundredTwentyFiveCampusParkwayMember" xlink:label="cli_OneThousandThreeHundredTwentyFiveCampusParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandThreeHundredTwentyFiveCampusParkwayMember" xlink:to="cli_OneThousandThreeHundredTwentyFiveCampusParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandThreeHundredTwentyFiveCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Twenty Five Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandThreeHundredTwentyFiveCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Twenty Five Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandThreeHundredTwentyFiveCampusParkwayMember_lbl" xml:lang="en-US">1325 Campus Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandThreeHundredFortyCampusParkwayMember" xlink:label="cli_OneThousandThreeHundredFortyCampusParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandThreeHundredFortyCampusParkwayMember" xlink:to="cli_OneThousandThreeHundredFortyCampusParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandThreeHundredFortyCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Forty Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandThreeHundredFortyCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Forty Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandThreeHundredFortyCampusParkwayMember_lbl" xml:lang="en-US">1340 Campus Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandThreeHundredFortyFiveCampusParkwayMember" xlink:label="cli_OneThousandThreeHundredFortyFiveCampusParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandThreeHundredFortyFiveCampusParkwayMember" xlink:to="cli_OneThousandThreeHundredFortyFiveCampusParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandThreeHundredFortyFiveCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Forty Five Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandThreeHundredFortyFiveCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Forty Five Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandThreeHundredFortyFiveCampusParkwayMember_lbl" xml:lang="en-US">1345 Campus Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandThreeHundredFiftyCampusParkwayMember" xlink:label="cli_OneThousandThreeHundredFiftyCampusParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandThreeHundredFiftyCampusParkwayMember" xlink:to="cli_OneThousandThreeHundredFiftyCampusParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandThreeHundredFiftyCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Fifty Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandThreeHundredFiftyCampusParkwayMember_lbl" xml:lang="en-US">One Thousand Three Hundred Fifty Campus Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandThreeHundredFiftyCampusParkwayMember_lbl" xml:lang="en-US">1350 Campus Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandFourHundredThirtyThreeHighwayThirtyFourMember" xlink:label="cli_OneThousandFourHundredThirtyThreeHighwayThirtyFourMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandFourHundredThirtyThreeHighwayThirtyFourMember" xlink:to="cli_OneThousandFourHundredThirtyThreeHighwayThirtyFourMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandFourHundredThirtyThreeHighwayThirtyFourMember_lbl" xml:lang="en-US">One Thousand Four Hundred Thirty Three Highway Thirty Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandFourHundredThirtyThreeHighwayThirtyFourMember_lbl" xml:lang="en-US">One Thousand Four Hundred Thirty Three Highway Thirty Four [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandFourHundredThirtyThreeHighwayThirtyFourMember_lbl" xml:lang="en-US">1433 Highway 34 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandThreeHundredTwentyWyckoffAvenueMember" xlink:label="cli_OneThousandThreeHundredTwentyWyckoffAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandThreeHundredTwentyWyckoffAvenueMember" xlink:to="cli_OneThousandThreeHundredTwentyWyckoffAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandThreeHundredTwentyWyckoffAvenueMember_lbl" xml:lang="en-US">One Thousand Three Hundred Twenty Wyckoff Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandThreeHundredTwentyWyckoffAvenueMember_lbl" xml:lang="en-US">One Thousand Three Hundred Twenty Wyckoff Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandThreeHundredTwentyWyckoffAvenueMember_lbl" xml:lang="en-US">1320 Wyckoff Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandThreeHundredTwentyFourWyckoffAvenueMember" xlink:label="cli_OneThousandThreeHundredTwentyFourWyckoffAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandThreeHundredTwentyFourWyckoffAvenueMember" xlink:to="cli_OneThousandThreeHundredTwentyFourWyckoffAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandThreeHundredTwentyFourWyckoffAvenueMember_lbl" xml:lang="en-US">One Thousand Three Hundred Twenty Four Wyckoff Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandThreeHundredTwentyFourWyckoffAvenueMember_lbl" xml:lang="en-US">One Thousand Three Hundred Twenty Four Wyckoff Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandThreeHundredTwentyFourWyckoffAvenueMember_lbl" xml:lang="en-US">1324 Wyckoff Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredTwentyFiveColumbiaParkwayMember" xlink:label="cli_ThreeHundredTwentyFiveColumbiaParkwayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredTwentyFiveColumbiaParkwayMember" xlink:to="cli_ThreeHundredTwentyFiveColumbiaParkwayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredTwentyFiveColumbiaParkwayMember_lbl" xml:lang="en-US">Three Hundred Twenty Five Columbia Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredTwentyFiveColumbiaParkwayMember_lbl" xml:lang="en-US">Three Hundred Twenty Five Columbia Parkway [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredTwentyFiveColumbiaParkwayMember_lbl" xml:lang="en-US">325 Columbia Parkway [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredFiftyJohnsonRoadMember" xlink:label="cli_TwoHundredFiftyJohnsonRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredFiftyJohnsonRoadMember" xlink:to="cli_TwoHundredFiftyJohnsonRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredFiftyJohnsonRoadMember_lbl" xml:lang="en-US">Two Hundred Fifty Johnson Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredFiftyJohnsonRoadMember_lbl" xml:lang="en-US">Two Hundred Fifty Johnson Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredFiftyJohnsonRoadMember_lbl" xml:lang="en-US">250 Johnson Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredOneLittletonRoadMember" xlink:label="cli_TwoHundredOneLittletonRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredOneLittletonRoadMember" xlink:to="cli_TwoHundredOneLittletonRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredOneLittletonRoadMember_lbl" xml:lang="en-US">Two Hundred One Littleton Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredOneLittletonRoadMember_lbl" xml:lang="en-US">Two Hundred One Littleton Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredOneLittletonRoadMember_lbl" xml:lang="en-US">201 Littleton Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredTwelveMountKembleAvenueMember" xlink:label="cli_FourHundredTwelveMountKembleAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredTwelveMountKembleAvenueMember" xlink:to="cli_FourHundredTwelveMountKembleAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredTwelveMountKembleAvenueMember_lbl" xml:lang="en-US">Four Hundred Twelve Mount Kemble Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredTwelveMountKembleAvenueMember_lbl" xml:lang="en-US">Four Hundred Twelve Mount Kemble Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredTwelveMountKembleAvenueMember_lbl" xml:lang="en-US">412 Mt. Kemble Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourCampusDriveMember" xlink:label="cli_FourCampusDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourCampusDriveMember" xlink:to="cli_FourCampusDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourCampusDriveMember_lbl" xml:lang="en-US">Four Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourCampusDriveMember_lbl" xml:lang="en-US">Four Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourCampusDriveMember_lbl" xml:lang="en-US">4 Campus Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixCampusDriveMember" xlink:label="cli_SixCampusDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixCampusDriveMember" xlink:to="cli_SixCampusDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixCampusDriveMember_lbl" xml:lang="en-US">Six Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixCampusDriveMember_lbl" xml:lang="en-US">Six Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixCampusDriveMember_lbl" xml:lang="en-US">6 Campus Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenCampusDriveMember" xlink:label="cli_SevenCampusDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenCampusDriveMember" xlink:to="cli_SevenCampusDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenCampusDriveMember_lbl" xml:lang="en-US">Seven Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenCampusDriveMember_lbl" xml:lang="en-US">Seven Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenCampusDriveMember_lbl" xml:lang="en-US">7 Campus Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightCampusDriveMember" xlink:label="cli_EightCampusDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightCampusDriveMember" xlink:to="cli_EightCampusDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightCampusDriveMember_lbl" xml:lang="en-US">Eight Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightCampusDriveMember_lbl" xml:lang="en-US">Eight Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightCampusDriveMember_lbl" xml:lang="en-US">8 Campus Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NineCampusDriveMember" xlink:label="cli_NineCampusDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NineCampusDriveMember" xlink:to="cli_NineCampusDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NineCampusDriveMember_lbl" xml:lang="en-US">Nine Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NineCampusDriveMember_lbl" xml:lang="en-US">Nine Campus Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NineCampusDriveMember_lbl" xml:lang="en-US">9 Campus Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourCenturyDriveMember" xlink:label="cli_FourCenturyDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourCenturyDriveMember" xlink:to="cli_FourCenturyDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourCenturyDriveMember_lbl" xml:lang="en-US">Four Century Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourCenturyDriveMember_lbl" xml:lang="en-US">Four Century Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourCenturyDriveMember_lbl" xml:lang="en-US">4 Century Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveCenturyDriveMember" xlink:label="cli_FiveCenturyDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveCenturyDriveMember" xlink:to="cli_FiveCenturyDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveCenturyDriveMember_lbl" xml:lang="en-US">Five Century Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveCenturyDriveMember_lbl" xml:lang="en-US">Five Century Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveCenturyDriveMember_lbl" xml:lang="en-US">5 Century Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixCenturyDriveMember" xlink:label="cli_SixCenturyDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixCenturyDriveMember" xlink:to="cli_SixCenturyDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixCenturyDriveMember_lbl" xml:lang="en-US">Six Century Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixCenturyDriveMember_lbl" xml:lang="en-US">Six Century Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixCenturyDriveMember_lbl" xml:lang="en-US">6 Century Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoDrydenWayMember" xlink:label="cli_TwoDrydenWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoDrydenWayMember" xlink:to="cli_TwoDrydenWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoDrydenWayMember_lbl" xml:lang="en-US">Two Dryden Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoDrydenWayMember_lbl" xml:lang="en-US">Two Dryden Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoDrydenWayMember_lbl" xml:lang="en-US">2 Dryden Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourGatehallDriveMember" xlink:label="cli_FourGatehallDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourGatehallDriveMember" xlink:to="cli_FourGatehallDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourGatehallDriveMember_lbl" xml:lang="en-US">Four Gatehall Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourGatehallDriveMember_lbl" xml:lang="en-US">Four Gatehall Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourGatehallDriveMember_lbl" xml:lang="en-US">4 Gatehall Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHiltonCourtMember" xlink:label="cli_TwoHiltonCourtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHiltonCourtMember" xlink:to="cli_TwoHiltonCourtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHiltonCourtMember_lbl" xml:lang="en-US">Two Hilton Court [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHiltonCourtMember_lbl" xml:lang="en-US">Two Hilton Court [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHiltonCourtMember_lbl" xml:lang="en-US">2 Hilton Court [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandSixHundredThirtyThreeLittletonRoadMember" xlink:label="cli_OneThousandSixHundredThirtyThreeLittletonRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandSixHundredThirtyThreeLittletonRoadMember" xlink:to="cli_OneThousandSixHundredThirtyThreeLittletonRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandSixHundredThirtyThreeLittletonRoadMember_lbl" xml:lang="en-US">One Thousand Six Hundred Thirty Three Littleton Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandSixHundredThirtyThreeLittletonRoadMember_lbl" xml:lang="en-US">One Thousand Six Hundred Thirty Three Littleton Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandSixHundredThirtyThreeLittletonRoadMember_lbl" xml:lang="en-US">1633 Littleton Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixHundredParsippanyRoadMember" xlink:label="cli_SixHundredParsippanyRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixHundredParsippanyRoadMember" xlink:to="cli_SixHundredParsippanyRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixHundredParsippanyRoadMember_lbl" xml:lang="en-US">Six Hundred Parsippany Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixHundredParsippanyRoadMember_lbl" xml:lang="en-US">Six Hundred Parsippany Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixHundredParsippanyRoadMember_lbl" xml:lang="en-US">600 Parsippany Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneSylvanWayMember" xlink:label="cli_OneSylvanWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneSylvanWayMember" xlink:to="cli_OneSylvanWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneSylvanWayMember_lbl" xml:lang="en-US">One Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneSylvanWayMember_lbl" xml:lang="en-US">One Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneSylvanWayMember_lbl" xml:lang="en-US">1 Sylvan Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourSylvanWayMember" xlink:label="cli_FourSylvanWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourSylvanWayMember" xlink:to="cli_FourSylvanWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourSylvanWayMember_lbl" xml:lang="en-US">Four Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourSylvanWayMember_lbl" xml:lang="en-US">Four Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourSylvanWayMember_lbl" xml:lang="en-US">4 Sylvan Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveSylvanWayMember" xlink:label="cli_FiveSylvanWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveSylvanWayMember" xlink:to="cli_FiveSylvanWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveSylvanWayMember_lbl" xml:lang="en-US">Five Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveSylvanWayMember_lbl" xml:lang="en-US">Five Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveSylvanWayMember_lbl" xml:lang="en-US">5 Sylvan Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenSylvanWayMember" xlink:label="cli_SevenSylvanWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenSylvanWayMember" xlink:to="cli_SevenSylvanWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenSylvanWayMember_lbl" xml:lang="en-US">Seven Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenSylvanWayMember_lbl" xml:lang="en-US">Seven Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenSylvanWayMember_lbl" xml:lang="en-US">7 Sylvan Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwentyTwoSylvanWayMember" xlink:label="cli_TwentyTwoSylvanWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwentyTwoSylvanWayMember" xlink:to="cli_TwentyTwoSylvanWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwentyTwoSylvanWayMember_lbl" xml:lang="en-US">Twenty Two Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwentyTwoSylvanWayMember_lbl" xml:lang="en-US">Twenty Two Sylvan Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwentyTwoSylvanWayMember_lbl" xml:lang="en-US">22 Sylvan Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwentyWaterviewBoulevardMember" xlink:label="cli_TwentyWaterviewBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwentyWaterviewBoulevardMember" xlink:to="cli_TwentyWaterviewBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwentyWaterviewBoulevardMember_lbl" xml:lang="en-US">Twenty Waterview Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwentyWaterviewBoulevardMember_lbl" xml:lang="en-US">Twenty Waterview Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwentyWaterviewBoulevardMember_lbl" xml:lang="en-US">20 Waterview Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveWoodHollowRoadMember" xlink:label="cli_FiveWoodHollowRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveWoodHollowRoadMember" xlink:to="cli_FiveWoodHollowRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveWoodHollowRoadMember_lbl" xml:lang="en-US">Five Wood Hollow Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveWoodHollowRoadMember_lbl" xml:lang="en-US">Five Wood Hollow Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveWoodHollowRoadMember_lbl" xml:lang="en-US">5 Wood Hollow Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneCenterCourtMember" xlink:label="cli_OneCenterCourtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneCenterCourtMember" xlink:to="cli_OneCenterCourtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneCenterCourtMember_lbl" xml:lang="en-US">One Center Court [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneCenterCourtMember_lbl" xml:lang="en-US">One Center Court [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneCenterCourtMember_lbl" xml:lang="en-US">1 Center Court [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoCenterCourtMember" xlink:label="cli_TwoCenterCourtMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoCenterCourtMember" xlink:to="cli_TwoCenterCourtMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoCenterCourtMember_lbl" xml:lang="en-US">Two Center Court [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoCenterCourtMember_lbl" xml:lang="en-US">Two Center Court [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoCenterCourtMember_lbl" xml:lang="en-US">2 Center Court [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElevenCommerceWayMember" xlink:label="cli_ElevenCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElevenCommerceWayMember" xlink:to="cli_ElevenCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElevenCommerceWayMember_lbl" xml:lang="en-US">Eleven Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElevenCommerceWayMember_lbl" xml:lang="en-US">Eleven Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElevenCommerceWayMember_lbl" xml:lang="en-US">11 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwentyCommerceWayMember" xlink:label="cli_TwentyCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwentyCommerceWayMember" xlink:to="cli_TwentyCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwentyCommerceWayMember_lbl" xml:lang="en-US">Twenty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwentyCommerceWayMember_lbl" xml:lang="en-US">Twenty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwentyCommerceWayMember_lbl" xml:lang="en-US">20 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwentyNineCommerceWayMember" xlink:label="cli_TwentyNineCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwentyNineCommerceWayMember" xlink:to="cli_TwentyNineCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwentyNineCommerceWayMember_lbl" xml:lang="en-US">Twenty Nine Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwentyNineCommerceWayMember_lbl" xml:lang="en-US">Twenty Nine Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwentyNineCommerceWayMember_lbl" xml:lang="en-US">29 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FortyCommerceWayMember" xlink:label="cli_FortyCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FortyCommerceWayMember" xlink:to="cli_FortyCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FortyCommerceWayMember_lbl" xml:lang="en-US">Forty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FortyCommerceWayMember_lbl" xml:lang="en-US">Forty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FortyCommerceWayMember_lbl" xml:lang="en-US">40 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FortyFiveCommerceWayMember" xlink:label="cli_FortyFiveCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FortyFiveCommerceWayMember" xlink:to="cli_FortyFiveCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FortyFiveCommerceWayMember_lbl" xml:lang="en-US">Forty Five Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FortyFiveCommerceWayMember_lbl" xml:lang="en-US">Forty Five Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FortyFiveCommerceWayMember_lbl" xml:lang="en-US">45 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixtyCommerceWayMember" xlink:label="cli_SixtyCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixtyCommerceWayMember" xlink:to="cli_SixtyCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixtyCommerceWayMember_lbl" xml:lang="en-US">Sixty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixtyCommerceWayMember_lbl" xml:lang="en-US">Sixty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixtyCommerceWayMember_lbl" xml:lang="en-US">60 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightyCommerceWayMember" xlink:label="cli_EightyCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightyCommerceWayMember" xlink:to="cli_EightyCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightyCommerceWayMember_lbl" xml:lang="en-US">Eighty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightyCommerceWayMember_lbl" xml:lang="en-US">Eighty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightyCommerceWayMember_lbl" xml:lang="en-US">80 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredCommerceWayMember" xlink:label="cli_OneHundredCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredCommerceWayMember" xlink:to="cli_OneHundredCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredCommerceWayMember_lbl" xml:lang="en-US">One Hundred Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredCommerceWayMember_lbl" xml:lang="en-US">One Hundred Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredCommerceWayMember_lbl" xml:lang="en-US">100 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredTwentyCommerceWayMember" xlink:label="cli_OneHundredTwentyCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredTwentyCommerceWayMember" xlink:to="cli_OneHundredTwentyCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredTwentyCommerceWayMember_lbl" xml:lang="en-US">One Hundred Twenty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredTwentyCommerceWayMember_lbl" xml:lang="en-US">One Hundred Twenty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredTwentyCommerceWayMember_lbl" xml:lang="en-US">120 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredFortyCommerceWayMember" xlink:label="cli_OneHundredFortyCommerceWayMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredFortyCommerceWayMember" xlink:to="cli_OneHundredFortyCommerceWayMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredFortyCommerceWayMember_lbl" xml:lang="en-US">One Hundred Forty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredFortyCommerceWayMember_lbl" xml:lang="en-US">One Hundred Forty Commerce Way [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredFortyCommerceWayMember_lbl" xml:lang="en-US">140 Commerce Way [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_NineHundredNinetyNineRiverviewDriveMember" xlink:label="cli_NineHundredNinetyNineRiverviewDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_NineHundredNinetyNineRiverviewDriveMember" xlink:to="cli_NineHundredNinetyNineRiverviewDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_NineHundredNinetyNineRiverviewDriveMember_lbl" xml:lang="en-US">Nine Hundred Ninety Nine Riverview Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_NineHundredNinetyNineRiverviewDriveMember_lbl" xml:lang="en-US">Nine Hundred Ninety Nine Riverview Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_NineHundredNinetyNineRiverviewDriveMember_lbl" xml:lang="en-US">999 Riverview Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredTwentyTwoMountAiryRoadMember" xlink:label="cli_TwoHundredTwentyTwoMountAiryRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredTwentyTwoMountAiryRoadMember" xlink:to="cli_TwoHundredTwentyTwoMountAiryRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredTwentyTwoMountAiryRoadMember_lbl" xml:lang="en-US">Two Hundred Twenty Two Mount Airy Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredTwentyTwoMountAiryRoadMember_lbl" xml:lang="en-US">Two Hundred Twenty Two Mount Airy Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredTwentyTwoMountAiryRoadMember_lbl" xml:lang="en-US">222 Mt. Airy Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredThirtyThreeMountAiryRoadMember" xlink:label="cli_TwoHundredThirtyThreeMountAiryRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredThirtyThreeMountAiryRoadMember" xlink:to="cli_TwoHundredThirtyThreeMountAiryRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredThirtyThreeMountAiryRoadMember_lbl" xml:lang="en-US">Two Hundred Thirty Three Mount Airy Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredThirtyThreeMountAiryRoadMember_lbl" xml:lang="en-US">Two Hundred Thirty Three Mount Airy Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredThirtyThreeMountAiryRoadMember_lbl" xml:lang="en-US">233 Mt. Airy Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredFortyRouteTwentyTwoEastMember" xlink:label="cli_FourHundredFortyRouteTwentyTwoEastMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredFortyRouteTwentyTwoEastMember" xlink:to="cli_FourHundredFortyRouteTwentyTwoEastMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredFortyRouteTwentyTwoEastMember_lbl" xml:lang="en-US">Four Hundred Forty Route Twenty Two East [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredFortyRouteTwentyTwoEastMember_lbl" xml:lang="en-US">Four Hundred Forty Route Twenty Two East [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredFortyRouteTwentyTwoEastMember_lbl" xml:lang="en-US">440 Route 22 East [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenHundredTwentyOneRouteTwoHundredTwoSlashTwoHundredSixMember" xlink:label="cli_SevenHundredTwentyOneRouteTwoHundredTwoSlashTwoHundredSixMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenHundredTwentyOneRouteTwoHundredTwoSlashTwoHundredSixMember" xlink:to="cli_SevenHundredTwentyOneRouteTwoHundredTwoSlashTwoHundredSixMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenHundredTwentyOneRouteTwoHundredTwoSlashTwoHundredSixMember_lbl" xml:lang="en-US">Seven Hundred Twenty One Route Two Hundred Two Slash Two Hundred Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenHundredTwentyOneRouteTwoHundredTwoSlashTwoHundredSixMember_lbl" xml:lang="en-US">Seven Hundred Twenty One Route Two Hundred Two Slash Two Hundred Six [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenHundredTwentyOneRouteTwoHundredTwoSlashTwoHundredSixMember_lbl" xml:lang="en-US">721 Route 202/206 [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TenIndependenceBoulevardMember" xlink:label="cli_TenIndependenceBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TenIndependenceBoulevardMember" xlink:to="cli_TenIndependenceBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TenIndependenceBoulevardMember_lbl" xml:lang="en-US">Ten Independence Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TenIndependenceBoulevardMember_lbl" xml:lang="en-US">Ten Independence Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TenIndependenceBoulevardMember_lbl" xml:lang="en-US">10 Independence Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixCommerceDriveMember" xlink:label="cli_SixCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixCommerceDriveMember" xlink:to="cli_SixCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixCommerceDriveMember_lbl" xml:lang="en-US">Six Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixCommerceDriveMember_lbl" xml:lang="en-US">Six Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixCommerceDriveMember_lbl" xml:lang="en-US">6 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElevenCommerceDriveMember" xlink:label="cli_ElevenCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElevenCommerceDriveMember" xlink:to="cli_ElevenCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElevenCommerceDriveMember_lbl" xml:lang="en-US">Eleven Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElevenCommerceDriveMember_lbl" xml:lang="en-US">Eleven Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElevenCommerceDriveMember_lbl" xml:lang="en-US">11 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwelveCommerceDriveMember" xlink:label="cli_TwelveCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwelveCommerceDriveMember" xlink:to="cli_TwelveCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwelveCommerceDriveMember_lbl" xml:lang="en-US">Twelve Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwelveCommerceDriveMember_lbl" xml:lang="en-US">Twelve Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwelveCommerceDriveMember_lbl" xml:lang="en-US">12 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourteenCommerceDriveMember" xlink:label="cli_FourteenCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourteenCommerceDriveMember" xlink:to="cli_FourteenCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourteenCommerceDriveMember_lbl" xml:lang="en-US">Fourteen Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourteenCommerceDriveMember_lbl" xml:lang="en-US">Fourteen Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourteenCommerceDriveMember_lbl" xml:lang="en-US">14 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwentyCommerceDriveMember" xlink:label="cli_TwentyCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwentyCommerceDriveMember" xlink:to="cli_TwentyCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwentyCommerceDriveMember_lbl" xml:lang="en-US">Twenty Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwentyCommerceDriveMember_lbl" xml:lang="en-US">Twenty Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwentyCommerceDriveMember_lbl" xml:lang="en-US">20 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwentyFiveCommerceDriveMember" xlink:label="cli_TwentyFiveCommerceDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwentyFiveCommerceDriveMember" xlink:to="cli_TwentyFiveCommerceDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwentyFiveCommerceDriveMember_lbl" xml:lang="en-US">Twenty Five Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwentyFiveCommerceDriveMember_lbl" xml:lang="en-US">Twenty Five Commerce Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwentyFiveCommerceDriveMember_lbl" xml:lang="en-US">25 Commerce Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixtyFiveJacksonDriveMember" xlink:label="cli_SixtyFiveJacksonDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixtyFiveJacksonDriveMember" xlink:to="cli_SixtyFiveJacksonDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixtyFiveJacksonDriveMember_lbl" xml:lang="en-US">Sixty Five Jackson Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixtyFiveJacksonDriveMember_lbl" xml:lang="en-US">Sixty Five Jackson Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixtyFiveJacksonDriveMember_lbl" xml:lang="en-US">65 Jackson Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightHundredNinetyMountainRoadMember" xlink:label="cli_EightHundredNinetyMountainRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightHundredNinetyMountainRoadMember" xlink:to="cli_EightHundredNinetyMountainRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightHundredNinetyMountainRoadMember_lbl" xml:lang="en-US">Eight Hundred Ninety Mountain Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightHundredNinetyMountainRoadMember_lbl" xml:lang="en-US">Eight Hundred Ninety Mountain Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightHundredNinetyMountainRoadMember_lbl" xml:lang="en-US">890 Mountain Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredTwentyFiveBroadStreetMember" xlink:label="cli_OneHundredTwentyFiveBroadStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredTwentyFiveBroadStreetMember" xlink:to="cli_OneHundredTwentyFiveBroadStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredTwentyFiveBroadStreetMember_lbl" xml:lang="en-US">One Hundred Twenty Five Broad Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredTwentyFiveBroadStreetMember_lbl" xml:lang="en-US">One Hundred Twenty Five Broad Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredTwentyFiveBroadStreetMember_lbl" xml:lang="en-US">125 Broad Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredRellaBoulevardMember" xlink:label="cli_FourHundredRellaBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredRellaBoulevardMember" xlink:to="cli_FourHundredRellaBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredRellaBoulevardMember_lbl" xml:lang="en-US">Four Hundred Rella Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredRellaBoulevardMember_lbl" xml:lang="en-US">Four Hundred Rella Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredRellaBoulevardMember_lbl" xml:lang="en-US">400 Rella Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElevenClearbrookRoadMember" xlink:label="cli_ElevenClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElevenClearbrookRoadMember" xlink:to="cli_ElevenClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElevenClearbrookRoadMember_lbl" xml:lang="en-US">Eleven Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElevenClearbrookRoadMember_lbl" xml:lang="en-US">Eleven Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElevenClearbrookRoadMember_lbl" xml:lang="en-US">11 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SeventyFiveClearbrookRoadMember" xlink:label="cli_SeventyFiveClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SeventyFiveClearbrookRoadMember" xlink:to="cli_SeventyFiveClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SeventyFiveClearbrookRoadMember_lbl" xml:lang="en-US">Seventy Five Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SeventyFiveClearbrookRoadMember_lbl" xml:lang="en-US">Seventy Five Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SeventyFiveClearbrookRoadMember_lbl" xml:lang="en-US">75 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredClearbrookRoadMember" xlink:label="cli_OneHundredClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredClearbrookRoadMember" xlink:to="cli_OneHundredClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredClearbrookRoadMember_lbl" xml:lang="en-US">100 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredTwentyFiveClearbrookRoadMember" xlink:label="cli_OneHundredTwentyFiveClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredTwentyFiveClearbrookRoadMember" xlink:to="cli_OneHundredTwentyFiveClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredTwentyFiveClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Twenty Five Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredTwentyFiveClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Twenty Five Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredTwentyFiveClearbrookRoadMember_lbl" xml:lang="en-US">125 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredFiftyClearbrookRoadMember" xlink:label="cli_OneHundredFiftyClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredFiftyClearbrookRoadMember" xlink:to="cli_OneHundredFiftyClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredFiftyClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Fifty Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredFiftyClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Fifty Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredFiftyClearbrookRoadMember_lbl" xml:lang="en-US">150 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredSeventyFiveClearbrookRoadMember" xlink:label="cli_OneHundredSeventyFiveClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredSeventyFiveClearbrookRoadMember" xlink:to="cli_OneHundredSeventyFiveClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredSeventyFiveClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Seventy Five Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredSeventyFiveClearbrookRoadMember_lbl" xml:lang="en-US">One Hundred Seventy Five Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredSeventyFiveClearbrookRoadMember_lbl" xml:lang="en-US">175 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredClearbrookRoadMember" xlink:label="cli_TwoHundredClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredClearbrookRoadMember" xlink:to="cli_TwoHundredClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredClearbrookRoadMember_lbl" xml:lang="en-US">Two Hundred Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredClearbrookRoadMember_lbl" xml:lang="en-US">Two Hundred Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredClearbrookRoadMember_lbl" xml:lang="en-US">200 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredFiftyClearbrookRoadMember" xlink:label="cli_TwoHundredFiftyClearbrookRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredFiftyClearbrookRoadMember" xlink:to="cli_TwoHundredFiftyClearbrookRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredFiftyClearbrookRoadMember_lbl" xml:lang="en-US">Two Hundred Fifty Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredFiftyClearbrookRoadMember_lbl" xml:lang="en-US">Two Hundred Fifty Clearbrook Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredFiftyClearbrookRoadMember_lbl" xml:lang="en-US">250 Clearbrook Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiftyExecutiveBoulevardMember" xlink:label="cli_FiftyExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiftyExecutiveBoulevardMember" xlink:to="cli_FiftyExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiftyExecutiveBoulevardMember_lbl" xml:lang="en-US">Fifty Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiftyExecutiveBoulevardMember_lbl" xml:lang="en-US">Fifty Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiftyExecutiveBoulevardMember_lbl" xml:lang="en-US">50 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SeventySevenExecutiveBoulevardMember" xlink:label="cli_SeventySevenExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SeventySevenExecutiveBoulevardMember" xlink:to="cli_SeventySevenExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SeventySevenExecutiveBoulevardMember_lbl" xml:lang="en-US">Seventy Seven Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SeventySevenExecutiveBoulevardMember_lbl" xml:lang="en-US">Seventy Seven Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SeventySevenExecutiveBoulevardMember_lbl" xml:lang="en-US">77 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightyFiveExecutiveBoulevardMember" xlink:label="cli_EightyFiveExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightyFiveExecutiveBoulevardMember" xlink:to="cli_EightyFiveExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightyFiveExecutiveBoulevardMember_lbl" xml:lang="en-US">Eighty Five Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightyFiveExecutiveBoulevardMember_lbl" xml:lang="en-US">Eighty Five Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightyFiveExecutiveBoulevardMember_lbl" xml:lang="en-US">85 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredOneExecutiveBoulevardMember" xlink:label="cli_OneHundredOneExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredOneExecutiveBoulevardMember" xlink:to="cli_OneHundredOneExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredOneExecutiveBoulevardMember_lbl" xml:lang="en-US">One Hundred One Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredOneExecutiveBoulevardMember_lbl" xml:lang="en-US">One Hundred One Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredOneExecutiveBoulevardMember_lbl" xml:lang="en-US">101 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredExecutiveBoulevardMember" xlink:label="cli_ThreeHundredExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredExecutiveBoulevardMember" xlink:to="cli_ThreeHundredExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">300 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredFiftyExecutiveBoulevardMember" xlink:label="cli_ThreeHundredFiftyExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredFiftyExecutiveBoulevardMember" xlink:to="cli_ThreeHundredFiftyExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredFiftyExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Hundred Fifty Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredFiftyExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Hundred Fifty Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredFiftyExecutiveBoulevardMember_lbl" xml:lang="en-US">350 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeHundredNinetyNineExecutiveBoulevardMember" xlink:label="cli_ThreeHundredNinetyNineExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeHundredNinetyNineExecutiveBoulevardMember" xlink:to="cli_ThreeHundredNinetyNineExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeHundredNinetyNineExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Hundred Ninety Nine Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeHundredNinetyNineExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Hundred Ninety Nine Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeHundredNinetyNineExecutiveBoulevardMember_lbl" xml:lang="en-US">399 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredExecutiveBoulevardMember" xlink:label="cli_FourHundredExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredExecutiveBoulevardMember" xlink:to="cli_FourHundredExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Four Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Four Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">400 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredExecutiveBoulevardMember" xlink:label="cli_FiveHundredExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredExecutiveBoulevardMember" xlink:to="cli_FiveHundredExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Five Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Five Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">500 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredTwentyFiveExecutiveBoulevardMember" xlink:label="cli_FiveHundredTwentyFiveExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredTwentyFiveExecutiveBoulevardMember" xlink:to="cli_FiveHundredTwentyFiveExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredTwentyFiveExecutiveBoulevardMember_lbl" xml:lang="en-US">Five Hundred Twenty Five Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredTwentyFiveExecutiveBoulevardMember_lbl" xml:lang="en-US">Five Hundred Twenty Five Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredTwentyFiveExecutiveBoulevardMember_lbl" xml:lang="en-US">525 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenHundredExecutiveBoulevardMember" xlink:label="cli_SevenHundredExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenHundredExecutiveBoulevardMember" xlink:to="cli_SevenHundredExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Seven Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">Seven Hundred Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenHundredExecutiveBoulevardMember_lbl" xml:lang="en-US">700 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredFiftyFiveTaxterRoadMember" xlink:label="cli_FiveHundredFiftyFiveTaxterRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredFiftyFiveTaxterRoadMember" xlink:to="cli_FiveHundredFiftyFiveTaxterRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredFiftyFiveTaxterRoadMember_lbl" xml:lang="en-US">Five Hundred Fifty Five Taxter Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredFiftyFiveTaxterRoadMember_lbl" xml:lang="en-US">Five Hundred Fifty Five Taxter Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredFiftyFiveTaxterRoadMember_lbl" xml:lang="en-US">555 Taxter Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredSixtyFiveTaxterRoadMember" xlink:label="cli_FiveHundredSixtyFiveTaxterRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredSixtyFiveTaxterRoadMember" xlink:to="cli_FiveHundredSixtyFiveTaxterRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredSixtyFiveTaxterRoadMember_lbl" xml:lang="en-US">Five Hundred Sixty Five Taxter Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredSixtyFiveTaxterRoadMember_lbl" xml:lang="en-US">Five Hundred Sixty Five Taxter Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredSixtyFiveTaxterRoadMember_lbl" xml:lang="en-US">565 Taxter Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredSeventyTaxterRoadMember" xlink:label="cli_FiveHundredSeventyTaxterRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredSeventyTaxterRoadMember" xlink:to="cli_FiveHundredSeventyTaxterRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredSeventyTaxterRoadMember_lbl" xml:lang="en-US">Five Hundred Seventy Taxter Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredSeventyTaxterRoadMember_lbl" xml:lang="en-US">Five Hundred Seventy Taxter Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredSeventyTaxterRoadMember_lbl" xml:lang="en-US">570 Taxter Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneWarehouseLaneMember" xlink:label="cli_OneWarehouseLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneWarehouseLaneMember" xlink:to="cli_OneWarehouseLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneWarehouseLaneMember_lbl" xml:lang="en-US">One Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneWarehouseLaneMember_lbl" xml:lang="en-US">One Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneWarehouseLaneMember_lbl" xml:lang="en-US">1 Warehouse Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoWarehouseLaneMember" xlink:label="cli_TwoWarehouseLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoWarehouseLaneMember" xlink:to="cli_TwoWarehouseLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoWarehouseLaneMember_lbl" xml:lang="en-US">Two Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoWarehouseLaneMember_lbl" xml:lang="en-US">Two Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoWarehouseLaneMember_lbl" xml:lang="en-US">2 Warehouse Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeWarehouseLaneMember" xlink:label="cli_ThreeWarehouseLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeWarehouseLaneMember" xlink:to="cli_ThreeWarehouseLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeWarehouseLaneMember_lbl" xml:lang="en-US">Three Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeWarehouseLaneMember_lbl" xml:lang="en-US">Three Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeWarehouseLaneMember_lbl" xml:lang="en-US">3 Warehouse Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourWarehouseLaneMember" xlink:label="cli_FourWarehouseLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourWarehouseLaneMember" xlink:to="cli_FourWarehouseLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourWarehouseLaneMember_lbl" xml:lang="en-US">Four Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourWarehouseLaneMember_lbl" xml:lang="en-US">Four Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourWarehouseLaneMember_lbl" xml:lang="en-US">4 Warehouse Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveWarehouseLaneMember" xlink:label="cli_FiveWarehouseLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveWarehouseLaneMember" xlink:to="cli_FiveWarehouseLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveWarehouseLaneMember_lbl" xml:lang="en-US">Five Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveWarehouseLaneMember_lbl" xml:lang="en-US">Five Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveWarehouseLaneMember_lbl" xml:lang="en-US">5 Warehouse Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixWarehouseLaneMember" xlink:label="cli_SixWarehouseLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixWarehouseLaneMember" xlink:to="cli_SixWarehouseLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixWarehouseLaneMember_lbl" xml:lang="en-US">Six Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixWarehouseLaneMember_lbl" xml:lang="en-US">Six Warehouse Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixWarehouseLaneMember_lbl" xml:lang="en-US">6 Warehouse Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneWestchesterPlazaMember" xlink:label="cli_OneWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneWestchesterPlazaMember" xlink:to="cli_OneWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneWestchesterPlazaMember_lbl" xml:lang="en-US">One Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneWestchesterPlazaMember_lbl" xml:lang="en-US">One Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneWestchesterPlazaMember_lbl" xml:lang="en-US">1 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoWestchesterPlazaMember" xlink:label="cli_TwoWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoWestchesterPlazaMember" xlink:to="cli_TwoWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoWestchesterPlazaMember_lbl" xml:lang="en-US">Two Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoWestchesterPlazaMember_lbl" xml:lang="en-US">Two Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoWestchesterPlazaMember_lbl" xml:lang="en-US">2 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeWestchesterPlazaMember" xlink:label="cli_ThreeWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeWestchesterPlazaMember" xlink:to="cli_ThreeWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeWestchesterPlazaMember_lbl" xml:lang="en-US">Three Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeWestchesterPlazaMember_lbl" xml:lang="en-US">Three Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeWestchesterPlazaMember_lbl" xml:lang="en-US">3 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourWestchesterPlazaMember" xlink:label="cli_FourWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourWestchesterPlazaMember" xlink:to="cli_FourWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourWestchesterPlazaMember_lbl" xml:lang="en-US">Four Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourWestchesterPlazaMember_lbl" xml:lang="en-US">Four Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourWestchesterPlazaMember_lbl" xml:lang="en-US">4 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveWestchesterPlazaMember" xlink:label="cli_FiveWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveWestchesterPlazaMember" xlink:to="cli_FiveWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveWestchesterPlazaMember_lbl" xml:lang="en-US">Five Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveWestchesterPlazaMember_lbl" xml:lang="en-US">Five Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveWestchesterPlazaMember_lbl" xml:lang="en-US">5 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixWestchesterPlazaMember" xlink:label="cli_SixWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixWestchesterPlazaMember" xlink:to="cli_SixWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixWestchesterPlazaMember_lbl" xml:lang="en-US">Six Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixWestchesterPlazaMember_lbl" xml:lang="en-US">Six Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixWestchesterPlazaMember_lbl" xml:lang="en-US">6 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenWestchesterPlazaMember" xlink:label="cli_SevenWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenWestchesterPlazaMember" xlink:to="cli_SevenWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenWestchesterPlazaMember_lbl" xml:lang="en-US">Seven Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenWestchesterPlazaMember_lbl" xml:lang="en-US">Seven Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenWestchesterPlazaMember_lbl" xml:lang="en-US">7 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightWestchesterPlazaMember" xlink:label="cli_EightWestchesterPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightWestchesterPlazaMember" xlink:to="cli_EightWestchesterPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightWestchesterPlazaMember_lbl" xml:lang="en-US">Eight Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightWestchesterPlazaMember_lbl" xml:lang="en-US">Eight Westchester Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightWestchesterPlazaMember_lbl" xml:lang="en-US">8 Westchester Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredSawMillRiverRoadMember" xlink:label="cli_TwoHundredSawMillRiverRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredSawMillRiverRoadMember" xlink:to="cli_TwoHundredSawMillRiverRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredSawMillRiverRoadMember_lbl" xml:lang="en-US">Two Hundred Saw Mill River Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredSawMillRiverRoadMember_lbl" xml:lang="en-US">Two Hundred Saw Mill River Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredSawMillRiverRoadMember_lbl" xml:lang="en-US">200 Saw Mill River Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneSkylineDriveMember" xlink:label="cli_OneSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneSkylineDriveMember" xlink:to="cli_OneSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneSkylineDriveMember_lbl" xml:lang="en-US">One Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneSkylineDriveMember_lbl" xml:lang="en-US">One Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneSkylineDriveMember_lbl" xml:lang="en-US">1 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoSkylineDriveMember" xlink:label="cli_TwoSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoSkylineDriveMember" xlink:to="cli_TwoSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoSkylineDriveMember_lbl" xml:lang="en-US">Two Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoSkylineDriveMember_lbl" xml:lang="en-US">Two Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoSkylineDriveMember_lbl" xml:lang="en-US">2 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourSkylineDriveMember" xlink:label="cli_FourSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourSkylineDriveMember" xlink:to="cli_FourSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourSkylineDriveMember_lbl" xml:lang="en-US">Four Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourSkylineDriveMember_lbl" xml:lang="en-US">Four Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourSkylineDriveMember_lbl" xml:lang="en-US">4 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveSkylineDriveMember" xlink:label="cli_FiveSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveSkylineDriveMember" xlink:to="cli_FiveSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveSkylineDriveMember_lbl" xml:lang="en-US">Five Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveSkylineDriveMember_lbl" xml:lang="en-US">Five Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveSkylineDriveMember_lbl" xml:lang="en-US">5 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixSkylineDriveMember" xlink:label="cli_SixSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixSkylineDriveMember" xlink:to="cli_SixSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixSkylineDriveMember_lbl" xml:lang="en-US">Six Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixSkylineDriveMember_lbl" xml:lang="en-US">Six Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixSkylineDriveMember_lbl" xml:lang="en-US">6 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenSkylineDriveMember" xlink:label="cli_SevenSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenSkylineDriveMember" xlink:to="cli_SevenSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenSkylineDriveMember_lbl" xml:lang="en-US">Seven Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenSkylineDriveMember_lbl" xml:lang="en-US">Seven Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenSkylineDriveMember_lbl" xml:lang="en-US">7 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_EightSkylineDriveMember" xlink:label="cli_EightSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_EightSkylineDriveMember" xlink:to="cli_EightSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_EightSkylineDriveMember_lbl" xml:lang="en-US">Eight Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_EightSkylineDriveMember_lbl" xml:lang="en-US">Eight Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_EightSkylineDriveMember_lbl" xml:lang="en-US">8 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TenSkylineDriveMember" xlink:label="cli_TenSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TenSkylineDriveMember" xlink:to="cli_TenSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TenSkylineDriveMember_lbl" xml:lang="en-US">Ten Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TenSkylineDriveMember_lbl" xml:lang="en-US">Ten Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TenSkylineDriveMember_lbl" xml:lang="en-US">10 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElevenSkylineDriveMember" xlink:label="cli_ElevenSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElevenSkylineDriveMember" xlink:to="cli_ElevenSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElevenSkylineDriveMember_lbl" xml:lang="en-US">Eleven Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElevenSkylineDriveMember_lbl" xml:lang="en-US">Eleven Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElevenSkylineDriveMember_lbl" xml:lang="en-US">11 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwelveSkylineDriveMember" xlink:label="cli_TwelveSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwelveSkylineDriveMember" xlink:to="cli_TwelveSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwelveSkylineDriveMember_lbl" xml:lang="en-US">Twelve Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwelveSkylineDriveMember_lbl" xml:lang="en-US">Twelve Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwelveSkylineDriveMember_lbl" xml:lang="en-US">12 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FifteenSkylineDriveMember" xlink:label="cli_FifteenSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FifteenSkylineDriveMember" xlink:to="cli_FifteenSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FifteenSkylineDriveMember_lbl" xml:lang="en-US">Fifteen Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FifteenSkylineDriveMember_lbl" xml:lang="en-US">Fifteen Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FifteenSkylineDriveMember_lbl" xml:lang="en-US">15 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SeventeenSkylineDriveMember" xlink:label="cli_SeventeenSkylineDriveMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SeventeenSkylineDriveMember" xlink:to="cli_SeventeenSkylineDriveMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SeventeenSkylineDriveMember_lbl" xml:lang="en-US">Seventeen Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SeventeenSkylineDriveMember_lbl" xml:lang="en-US">Seventeen Skyline Drive [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SeventeenSkylineDriveMember_lbl" xml:lang="en-US">17 Skyline Drive [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredWhitePlainsRoadMember" xlink:label="cli_TwoHundredWhitePlainsRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredWhitePlainsRoadMember" xlink:to="cli_TwoHundredWhitePlainsRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredWhitePlainsRoadMember_lbl" xml:lang="en-US">Two Hundred White Plains Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredWhitePlainsRoadMember_lbl" xml:lang="en-US">Two Hundred White Plains Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredWhitePlainsRoadMember_lbl" xml:lang="en-US">200 White Plains Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredTwentyWhitePlainsRoadMember" xlink:label="cli_TwoHundredTwentyWhitePlainsRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredTwentyWhitePlainsRoadMember" xlink:to="cli_TwoHundredTwentyWhitePlainsRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredTwentyWhitePlainsRoadMember_lbl" xml:lang="en-US">Two Hundred Twenty White Plains Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredTwentyWhitePlainsRoadMember_lbl" xml:lang="en-US">Two Hundred Twenty White Plains Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredTwentyWhitePlainsRoadMember_lbl" xml:lang="en-US">220 White Plains Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredThirtyWhitePlainsRoadMember" xlink:label="cli_TwoHundredThirtyWhitePlainsRoadMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredThirtyWhitePlainsRoadMember" xlink:to="cli_TwoHundredThirtyWhitePlainsRoadMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredThirtyWhitePlainsRoadMember_lbl" xml:lang="en-US">Two Hundred Thirty White Plains Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredThirtyWhitePlainsRoadMember_lbl" xml:lang="en-US">Two Hundred Thirty White Plains Road [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredThirtyWhitePlainsRoadMember_lbl" xml:lang="en-US">230 White Plains Road [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneBarkerAvenueMember" xlink:label="cli_OneBarkerAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneBarkerAvenueMember" xlink:to="cli_OneBarkerAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneBarkerAvenueMember_lbl" xml:lang="en-US">One Barker Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneBarkerAvenueMember_lbl" xml:lang="en-US">One Barker Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneBarkerAvenueMember_lbl" xml:lang="en-US">1 Barker Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeBarkerAvenueMember" xlink:label="cli_ThreeBarkerAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeBarkerAvenueMember" xlink:to="cli_ThreeBarkerAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeBarkerAvenueMember_lbl" xml:lang="en-US">Three Barker Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeBarkerAvenueMember_lbl" xml:lang="en-US">Three Barker Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeBarkerAvenueMember_lbl" xml:lang="en-US">3 Barker Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiftyMainStreetMember" xlink:label="cli_FiftyMainStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiftyMainStreetMember" xlink:to="cli_FiftyMainStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiftyMainStreetMember_lbl" xml:lang="en-US">Fifty Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiftyMainStreetMember_lbl" xml:lang="en-US">Fifty Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiftyMainStreetMember_lbl" xml:lang="en-US">50 Main Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ElevenMartineAvenueMember" xlink:label="cli_ElevenMartineAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ElevenMartineAvenueMember" xlink:to="cli_ElevenMartineAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ElevenMartineAvenueMember_lbl" xml:lang="en-US">Eleven Martine Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ElevenMartineAvenueMember_lbl" xml:lang="en-US">Eleven Martine Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ElevenMartineAvenueMember_lbl" xml:lang="en-US">11 Martine Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneWaterStreetMember" xlink:label="cli_OneWaterStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneWaterStreetMember" xlink:to="cli_OneWaterStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneWaterStreetMember_lbl" xml:lang="en-US">One Water Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneWaterStreetMember_lbl" xml:lang="en-US">One Water Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneWaterStreetMember_lbl" xml:lang="en-US">1 Water Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneHundredCorporateBoulevardMember" xlink:label="cli_OneHundredCorporateBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneHundredCorporateBoulevardMember" xlink:to="cli_OneHundredCorporateBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneHundredCorporateBoulevardMember_lbl" xml:lang="en-US">One Hundred Corporate Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneHundredCorporateBoulevardMember_lbl" xml:lang="en-US">One Hundred Corporate Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneHundredCorporateBoulevardMember_lbl" xml:lang="en-US">100 Corporate Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoHundredCorporateBoulevardSouthMember" xlink:label="cli_TwoHundredCorporateBoulevardSouthMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoHundredCorporateBoulevardSouthMember" xlink:to="cli_TwoHundredCorporateBoulevardSouthMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoHundredCorporateBoulevardSouthMember_lbl" xml:lang="en-US">Two Hundred Corporate Boulevard South [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoHundredCorporateBoulevardSouthMember_lbl" xml:lang="en-US">Two Hundred Corporate Boulevard South [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoHundredCorporateBoulevardSouthMember_lbl" xml:lang="en-US">200 Corporate Boulevard South [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneEnterpriseBoulevardMember" xlink:label="cli_OneEnterpriseBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneEnterpriseBoulevardMember" xlink:to="cli_OneEnterpriseBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneEnterpriseBoulevardMember_lbl" xml:lang="en-US">One Enterprise Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneEnterpriseBoulevardMember_lbl" xml:lang="en-US">One Enterprise Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneEnterpriseBoulevardMember_lbl" xml:lang="en-US">1 Enterprise Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneExecutiveBoulevardMember" xlink:label="cli_OneExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneExecutiveBoulevardMember" xlink:to="cli_OneExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneExecutiveBoulevardMember_lbl" xml:lang="en-US">One Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneExecutiveBoulevardMember_lbl" xml:lang="en-US">One Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneExecutiveBoulevardMember_lbl" xml:lang="en-US">1 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_TwoExecutiveBoulevardMember" xlink:label="cli_TwoExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_TwoExecutiveBoulevardMember" xlink:to="cli_TwoExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_TwoExecutiveBoulevardMember_lbl" xml:lang="en-US">Two Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_TwoExecutiveBoulevardMember_lbl" xml:lang="en-US">Two Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_TwoExecutiveBoulevardMember_lbl" xml:lang="en-US">2 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeExecutiveBoulevardMember" xlink:label="cli_ThreeExecutiveBoulevardMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeExecutiveBoulevardMember" xlink:to="cli_ThreeExecutiveBoulevardMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeExecutiveBoulevardMember_lbl" xml:lang="en-US">Three Executive Boulevard [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeExecutiveBoulevardMember_lbl" xml:lang="en-US">3 Executive Boulevard [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourExecutivePlazaMember" xlink:label="cli_FourExecutivePlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourExecutivePlazaMember" xlink:to="cli_FourExecutivePlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourExecutivePlazaMember_lbl" xml:lang="en-US">Four Executive Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourExecutivePlazaMember_lbl" xml:lang="en-US">Four Executive Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourExecutivePlazaMember_lbl" xml:lang="en-US">4 Executive Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixExecutivePlazaMember" xlink:label="cli_SixExecutivePlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixExecutivePlazaMember" xlink:to="cli_SixExecutivePlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixExecutivePlazaMember_lbl" xml:lang="en-US">Six Executive Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixExecutivePlazaMember_lbl" xml:lang="en-US">Six Executive Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixExecutivePlazaMember_lbl" xml:lang="en-US">6 Executive Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneOdellPlazaMember" xlink:label="cli_OneOdellPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneOdellPlazaMember" xlink:to="cli_OneOdellPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneOdellPlazaMember_lbl" xml:lang="en-US">One Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneOdellPlazaMember_lbl" xml:lang="en-US">One Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneOdellPlazaMember_lbl" xml:lang="en-US">1 Odell Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ThreeOdellPlazaMember" xlink:label="cli_ThreeOdellPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ThreeOdellPlazaMember" xlink:to="cli_ThreeOdellPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ThreeOdellPlazaMember_lbl" xml:lang="en-US">Three Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ThreeOdellPlazaMember_lbl" xml:lang="en-US">Three Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ThreeOdellPlazaMember_lbl" xml:lang="en-US">3 Odell Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveOdellPlazaMember" xlink:label="cli_FiveOdellPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveOdellPlazaMember" xlink:to="cli_FiveOdellPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveOdellPlazaMember_lbl" xml:lang="en-US">Five Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveOdellPlazaMember_lbl" xml:lang="en-US">Five Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveOdellPlazaMember_lbl" xml:lang="en-US">5 Odell Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SevenOdellPlazaMember" xlink:label="cli_SevenOdellPlazaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SevenOdellPlazaMember" xlink:to="cli_SevenOdellPlazaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SevenOdellPlazaMember_lbl" xml:lang="en-US">Seven Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SevenOdellPlazaMember_lbl" xml:lang="en-US">Seven Odell Plaza [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SevenOdellPlazaMember_lbl" xml:lang="en-US">7 Odell Plaza [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandTwoHundredSixtySixEastMainStreetMember" xlink:label="cli_OneThousandTwoHundredSixtySixEastMainStreetMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandTwoHundredSixtySixEastMainStreetMember" xlink:to="cli_OneThousandTwoHundredSixtySixEastMainStreetMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandTwoHundredSixtySixEastMainStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Sixty Six East Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandTwoHundredSixtySixEastMainStreetMember_lbl" xml:lang="en-US">One Thousand Two Hundred Sixty Six East Main Street [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandTwoHundredSixtySixEastMainStreetMember_lbl" xml:lang="en-US">1266 East Main Street [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourHundredNineteenWestAvenueMember" xlink:label="cli_FourHundredNineteenWestAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourHundredNineteenWestAvenueMember" xlink:to="cli_FourHundredNineteenWestAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourHundredNineteenWestAvenueMember_lbl" xml:lang="en-US">Four Hundred Nineteen West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourHundredNineteenWestAvenueMember_lbl" xml:lang="en-US">Four Hundred Nineteen West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourHundredNineteenWestAvenueMember_lbl" xml:lang="en-US">419 West Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredWestAvenueMember" xlink:label="cli_FiveHundredWestAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredWestAvenueMember" xlink:to="cli_FiveHundredWestAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredWestAvenueMember_lbl" xml:lang="en-US">Five Hundred West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredWestAvenueMember_lbl" xml:lang="en-US">Five Hundred West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredWestAvenueMember_lbl" xml:lang="en-US">500 West Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FiveHundredFiftyWestAvenueMember" xlink:label="cli_FiveHundredFiftyWestAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FiveHundredFiftyWestAvenueMember" xlink:to="cli_FiveHundredFiftyWestAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FiveHundredFiftyWestAvenueMember_lbl" xml:lang="en-US">Five Hundred Fifty West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FiveHundredFiftyWestAvenueMember_lbl" xml:lang="en-US">Five Hundred Fifty West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FiveHundredFiftyWestAvenueMember_lbl" xml:lang="en-US">550 West Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixHundredWestAvenueMember" xlink:label="cli_SixHundredWestAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixHundredWestAvenueMember" xlink:to="cli_SixHundredWestAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixHundredWestAvenueMember_lbl" xml:lang="en-US">Six Hundred West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixHundredWestAvenueMember_lbl" xml:lang="en-US">Six Hundred West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixHundredWestAvenueMember_lbl" xml:lang="en-US">600 West Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixHundredFiftyWestAvenueMember" xlink:label="cli_SixHundredFiftyWestAvenueMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixHundredFiftyWestAvenueMember" xlink:to="cli_SixHundredFiftyWestAvenueMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixHundredFiftyWestAvenueMember_lbl" xml:lang="en-US">Six Hundred Fifty West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixHundredFiftyWestAvenueMember_lbl" xml:lang="en-US">Six Hundred Fifty West Avenue [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixHundredFiftyWestAvenueMember_lbl" xml:lang="en-US">650 West Avenue [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandTwoHundredOneConnecticutAvenueNWMember" xlink:label="cli_OneThousandTwoHundredOneConnecticutAvenueNWMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandTwoHundredOneConnecticutAvenueNWMember" xlink:to="cli_OneThousandTwoHundredOneConnecticutAvenueNWMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandTwoHundredOneConnecticutAvenueNWMember_lbl" xml:lang="en-US">One Thousand Two Hundred One Connecticut Avenue NW [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandTwoHundredOneConnecticutAvenueNWMember_lbl" xml:lang="en-US">One Thousand Two Hundred One Connecticut Avenue N W [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandTwoHundredOneConnecticutAvenueNWMember_lbl" xml:lang="en-US">1201 Connecticut Avenue, NW [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_OneThousandFourHundredLStreetNWMember" xlink:label="cli_OneThousandFourHundredLStreetNWMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_OneThousandFourHundredLStreetNWMember" xlink:to="cli_OneThousandFourHundredLStreetNWMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_OneThousandFourHundredLStreetNWMember_lbl" xml:lang="en-US">One Thousand Four Hundred L Street NW [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_OneThousandFourHundredLStreetNWMember_lbl" xml:lang="en-US">One Thousand Four Hundred L Street N W [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_OneThousandFourHundredLStreetNWMember_lbl" xml:lang="en-US">1400 L Street, NW [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CapitalOfficeParkParcelaMember" xlink:label="cli_CapitalOfficeParkParcelaMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CapitalOfficeParkParcelaMember" xlink:to="cli_CapitalOfficeParkParcelaMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CapitalOfficeParkParcelaMember_lbl" xml:lang="en-US">Capital Office Park Parcel A [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CapitalOfficeParkParcelaMember_lbl" xml:lang="en-US">Capital Office Park Parcela [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CapitalOfficeParkParcelaMember_lbl" xml:lang="en-US">Capital Office Park Parcel A [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixThousandThreeHundredThreeIvyLaneMember" xlink:label="cli_SixThousandThreeHundredThreeIvyLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixThousandThreeHundredThreeIvyLaneMember" xlink:to="cli_SixThousandThreeHundredThreeIvyLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixThousandThreeHundredThreeIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Three Hundred Three Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixThousandThreeHundredThreeIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Three Hundred Three Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixThousandThreeHundredThreeIvyLaneMember_lbl" xml:lang="en-US">6303 Ivy Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixThousandFourHundredFourIvyLaneMember" xlink:label="cli_SixThousandFourHundredFourIvyLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixThousandFourHundredFourIvyLaneMember" xlink:to="cli_SixThousandFourHundredFourIvyLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixThousandFourHundredFourIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Four Hundred Four Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixThousandFourHundredFourIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Four Hundred Four Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixThousandFourHundredFourIvyLaneMember_lbl" xml:lang="en-US">6404 Ivy Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixThousandFourHundredSixIvyLaneMember" xlink:label="cli_SixThousandFourHundredSixIvyLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixThousandFourHundredSixIvyLaneMember" xlink:to="cli_SixThousandFourHundredSixIvyLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixThousandFourHundredSixIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Four Hundred Six Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixThousandFourHundredSixIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Four Hundred Six Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixThousandFourHundredSixIvyLaneMember_lbl" xml:lang="en-US">6406 Ivy Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_SixThousandFourHundredElevenIvyLaneMember" xlink:label="cli_SixThousandFourHundredElevenIvyLaneMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_SixThousandFourHundredElevenIvyLaneMember" xlink:to="cli_SixThousandFourHundredElevenIvyLaneMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_SixThousandFourHundredElevenIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Four Hundred Eleven Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_SixThousandFourHundredElevenIvyLaneMember_lbl" xml:lang="en-US">Six Thousand Four Hundred Eleven Ivy Lane [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_SixThousandFourHundredElevenIvyLaneMember_lbl" xml:lang="en-US">6411 Ivy Lane [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_FourThousandTwoHundredParliamentPlaceMember" xlink:label="cli_FourThousandTwoHundredParliamentPlaceMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_FourThousandTwoHundredParliamentPlaceMember" xlink:to="cli_FourThousandTwoHundredParliamentPlaceMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_FourThousandTwoHundredParliamentPlaceMember_lbl" xml:lang="en-US">Four Thousand Two Hundred Parliament Place [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_FourThousandTwoHundredParliamentPlaceMember_lbl" xml:lang="en-US">Four Thousand Two Hundred Parliament Place [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_FourThousandTwoHundredParliamentPlaceMember_lbl" xml:lang="en-US">4200 Parliament Place [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_ProjectsUnderDevelopmentAndDevelopableLandMember" xlink:label="cli_ProjectsUnderDevelopmentAndDevelopableLandMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_ProjectsUnderDevelopmentAndDevelopableLandMember" xlink:to="cli_ProjectsUnderDevelopmentAndDevelopableLandMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_ProjectsUnderDevelopmentAndDevelopableLandMember_lbl" xml:lang="en-US">Projects Under Development And Developable Land [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_ProjectsUnderDevelopmentAndDevelopableLandMember_lbl" xml:lang="en-US">Projects Under Development And Developable Land [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_ProjectsUnderDevelopmentAndDevelopableLandMember_lbl" xml:lang="en-US">Projects Under Development And Developable Land [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLineItems" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationLineItems" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationLineItems_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLineItems_lbl" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateAndAccumulatedDepreciationDateConstructed" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateConstructed" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateAndAccumulatedDepreciationDateConstructed" xlink:to="cli_RealEstateAndAccumulatedDepreciationDateConstructed_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateConstructed_lbl" xml:lang="en-US">Real Estate And Accumulated Depreciation, Date Constructed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateConstructed_lbl" xml:lang="en-US">Real Estate And Accumulated Depreciation, Date Constructed</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateConstructed_lbl" xml:lang="en-US">Year Built</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateAndAccumulatedDepreciationDateOfAcquisition" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateOfAcquisition" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateAndAccumulatedDepreciationDateOfAcquisition" xlink:to="cli_RealEstateAndAccumulatedDepreciationDateOfAcquisition_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateOfAcquisition_lbl" xml:lang="en-US">Real Estate And Accumulated Depreciation, Date Of Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateOfAcquisition_lbl" xml:lang="en-US">Real Estate And Accumulated Depreciation, Date Of Acquisition</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_RealEstateAndAccumulatedDepreciationDateOfAcquisition_lbl" xml:lang="en-US">Acquired</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Amount of Encumbrances</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_lbl" xml:lang="en-US">Related Encumbrances</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Initial Cost of Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" xml:lang="en-US">Initial Costs, Land</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" xml:lang="en-US">Initial Costs, Building and Improvements</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Carrying Costs</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" xml:lang="en-US">Costs Capitalized Subsequent to Acquisition</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Carrying Amount of Land</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" xml:lang="en-US">Gross Amount at Which Carried at Close of Period, Land</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:to="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" xml:lang="en-US">Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" xml:lang="en-US">Gross Amount at Which Carried at Close of Period, Building and Improvements</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:label="us-gaap_RealEstateGrossAtCarryingValue" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateGrossAtCarryingValue" xlink:to="us-gaap_RealEstateGrossAtCarryingValue_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xml:lang="en-US">Real Estate, Gross</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xml:lang="en-US">Rental Properties, Balance at end of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xml:lang="en-US">Rental Properties, Balance at beginning of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xml:lang="en-US">Total</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciation" xlink:label="us-gaap_RealEstateAccumulatedDepreciation" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAccumulatedDepreciation" xlink:to="us-gaap_RealEstateAccumulatedDepreciation_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xml:lang="en-US">Accumulated Depreciation, Balance at end of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xml:lang="en-US">Accumulated Depreciation, Balance at beginning of year</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xml:lang="en-US">Accumulated depreciation</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateOtherAdditions" xlink:label="us-gaap_RealEstateOtherAdditions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateOtherAdditions" xlink:to="us-gaap_RealEstateOtherAdditions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateOtherAdditions_lbl" xml:lang="en-US">Real Estate, Other Additions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RealEstateOtherAdditions_lbl" xml:lang="en-US">Rental Properties, Additions</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateCostOfRealEstateHeldForSale" xlink:label="cli_RealEstateCostOfRealEstateHeldForSale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateCostOfRealEstateHeldForSale" xlink:to="cli_RealEstateCostOfRealEstateHeldForSale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateCostOfRealEstateHeldForSale_lbl" xml:lang="en-US">Real Estate Cost Of Real Estate Held For Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateCostOfRealEstateHeldForSale_lbl" xml:lang="en-US">Real Estate Cost Of Real Estate Held For Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_RealEstateCostOfRealEstateHeldForSale_lbl" xml:lang="en-US">Rental Properties, Rental property held for sale</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateCostOfRealEstateSold" xlink:label="us-gaap_RealEstateCostOfRealEstateSold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateCostOfRealEstateSold" xlink:to="us-gaap_RealEstateCostOfRealEstateSold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xml:lang="en-US">Real Estate, Cost of Real Estate Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xml:lang="en-US">Rental Properties, Properties sold</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateOtherDeductions" xlink:label="us-gaap_RealEstateOtherDeductions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateOtherDeductions" xlink:to="us-gaap_RealEstateOtherDeductions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateOtherDeductions_lbl" xml:lang="en-US">Real Estate, Other Deductions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RealEstateOtherDeductions_lbl" xml:lang="en-US">Rental Properties, Impairment charge on rental property</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateRetirementsOrDisposals" xlink:label="cli_RealEstateRetirementsOrDisposals" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateRetirementsOrDisposals" xlink:to="cli_RealEstateRetirementsOrDisposals_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateRetirementsOrDisposals_lbl" xml:lang="en-US">Real Estate, Retirements Or Disposals</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateRetirementsOrDisposals_lbl" xml:lang="en-US">Real Estate, Retirements Or Disposals</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_RealEstateRetirementsOrDisposals_lbl" xml:lang="en-US">Rental Properties, Retirements/disposals</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" xlink:to="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation, Depreciation Expense</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xml:lang="en-US">Accumulated Depreciation, Depreciation expense</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateAccumulatedDepreciationRealEstateHeldForSale" xlink:label="cli_RealEstateAccumulatedDepreciationRealEstateHeldForSale" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateAccumulatedDepreciationRealEstateHeldForSale" xlink:to="cli_RealEstateAccumulatedDepreciationRealEstateHeldForSale_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateAccumulatedDepreciationRealEstateHeldForSale_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation Real Estate Held For Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateAccumulatedDepreciationRealEstateHeldForSale_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation Real Estate Held For Sale</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_RealEstateAccumulatedDepreciationRealEstateHeldForSale_lbl" xml:lang="en-US">Accumulated Depreciation, Rental property held for sale</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" xlink:to="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation, Real Estate Sold</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" xml:lang="en-US">Accumulated Depreciation, Properties sold</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciationOtherDeductions" xlink:label="us-gaap_RealEstateAccumulatedDepreciationOtherDeductions" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateAccumulatedDepreciationOtherDeductions" xlink:to="us-gaap_RealEstateAccumulatedDepreciationOtherDeductions_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateAccumulatedDepreciationOtherDeductions_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation, Other Deductions</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_RealEstateAccumulatedDepreciationOtherDeductions_lbl" xml:lang="en-US">Accumulated Depreciation, Impairment charge on rental property</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_RealEstateAccumulatedDepreciationRetirementsOrDisposals" xlink:label="cli_RealEstateAccumulatedDepreciationRetirementsOrDisposals" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_RealEstateAccumulatedDepreciationRetirementsOrDisposals" xlink:to="cli_RealEstateAccumulatedDepreciationRetirementsOrDisposals_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_RealEstateAccumulatedDepreciationRetirementsOrDisposals_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation, Retirements Or Disposals</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_RealEstateAccumulatedDepreciationRetirementsOrDisposals_lbl" xml:lang="en-US">Real Estate Accumulated Depreciation, Retirements Or Disposals</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="cli_RealEstateAccumulatedDepreciationRetirementsOrDisposals_lbl" xml:lang="en-US">Accumulated Depreciation, Retirements/disposals</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xml:lang="en-US">Finite Lived Intangible Assets Major Class Name [Domain]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_AcquiredAboveAndBelowMarketLeaseIntangiblesMember" xlink:label="cli_AcquiredAboveAndBelowMarketLeaseIntangiblesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_AcquiredAboveAndBelowMarketLeaseIntangiblesMember" xlink:to="cli_AcquiredAboveAndBelowMarketLeaseIntangiblesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AcquiredAboveAndBelowMarketLeaseIntangiblesMember_lbl" xml:lang="en-US">Acquired Above And Below Market Lease Intangibles [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_AcquiredAboveAndBelowMarketLeaseIntangiblesMember_lbl" xml:lang="en-US">Acquired Above And Below Market Lease Intangibles [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_AcquiredAboveAndBelowMarketLeaseIntangiblesMember_lbl" xml:lang="en-US">Acquired Above And Below Market Lease Intangibles [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LeasesAcquiredInPlaceMember" xlink:label="us-gaap_LeasesAcquiredInPlaceMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeasesAcquiredInPlaceMember" xlink:to="us-gaap_LeasesAcquiredInPlaceMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LeasesAcquiredInPlaceMember_lbl" xml:lang="en-US">Leases Acquired In Place [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LeasesAcquiredInPlaceMember_lbl" xml:lang="en-US">Acquired In-Place Lease Intangibles [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CommercialRealEstateMember" xlink:label="us-gaap_CommercialRealEstateMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommercialRealEstateMember" xlink:to="us-gaap_CommercialRealEstateMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CommercialRealEstateMember_lbl" xml:lang="en-US">Commercial Real Estate [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CommercialRealEstateMember_lbl" xml:lang="en-US">Commercial Properties [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InProcessDevelopmentProjectsMember" xlink:label="cli_InProcessDevelopmentProjectsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InProcessDevelopmentProjectsMember" xlink:to="cli_InProcessDevelopmentProjectsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InProcessDevelopmentProjectsMember_lbl" xml:lang="en-US">In Process Development Projects [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InProcessDevelopmentProjectsMember_lbl" xml:lang="en-US">In Process Development Projects [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InProcessDevelopmentProjectsMember_lbl" xml:lang="en-US">In-Process Development Projects [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_InterestsOrOptionsInLandParcelsMember" xlink:label="cli_InterestsOrOptionsInLandParcelsMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_InterestsOrOptionsInLandParcelsMember" xlink:to="cli_InterestsOrOptionsInLandParcelsMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InterestsOrOptionsInLandParcelsMember_lbl" xml:lang="en-US">Interests Or Options In Land Parcels [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_InterestsOrOptionsInLandParcelsMember_lbl" xml:lang="en-US">Interests Or Options In Land Parcels [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_InterestsOrOptionsInLandParcelsMember_lbl" xml:lang="en-US">Interests Or Options In Land Parcels [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_CondominiumResidentialPropertiesMember" xlink:label="cli_CondominiumResidentialPropertiesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_CondominiumResidentialPropertiesMember" xlink:to="cli_CondominiumResidentialPropertiesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_CondominiumResidentialPropertiesMember_lbl" xml:lang="en-US">Condo-Residential Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_CondominiumResidentialPropertiesMember_lbl" xml:lang="en-US">Condominium Residential Properties [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_CondominiumResidentialPropertiesMember_lbl" xml:lang="en-US">Condo-Residential Properties [Member]</label>
    <loc xlink:type="locator" xlink:href="cli-20131231.xsd#cli_GaragesMember" xlink:label="cli_GaragesMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_GaragesMember" xlink:to="cli_GaragesMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_GaragesMember_lbl" xml:lang="en-US">Garages [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_GaragesMember_lbl" xml:lang="en-US">Garages [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_GaragesMember_lbl" xml:lang="en-US">Garages [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RetailSiteMember" xlink:label="us-gaap_RetailSiteMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetailSiteMember" xlink:to="us-gaap_RetailSiteMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RetailSiteMember_lbl" xml:lang="en-US">Retail Site [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RetailSiteMember_lbl" xml:lang="en-US">Retail [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_HotelMember" xlink:label="us-gaap_HotelMember" />
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HotelMember" xlink:to="us-gaap_HotelMember_lbl" />
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_HotelMember_lbl" xml:lang="en-US">Hotel [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_HotelMember_lbl" xml:lang="en-US">Hotel [Member]</label>
    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LeaseAgreementsMember" xlink:label="us-gaap_LeaseAgreementsMember" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_InterestFreeNotesReceivableMember_lbl" xml:lang="en-US">Interest Free Notes Receivable [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_BelowMarketLeaseIntangiblesMember_lbl" xml:lang="en-US">Below Market Lease Intangibles [Member]</label>
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    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="cli_UnsecuredRevolvingCreditFacilityExtensionOneMember" xlink:to="cli_UnsecuredRevolvingCreditFacilityExtensionOneMember_lbl" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_PreviousUnsecuredRevolvingCreditFacilityMember_lbl" xml:lang="en-US">Previous Unsecured Revolving Credit Facility [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_PreviousUnsecuredRevolvingCreditFacilityMember_lbl" xml:lang="en-US">Previous Unsecured Revolving Credit Facility [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_PreviousUnsecuredRevolvingCreditFacilityMember_lbl" xml:lang="en-US">Previous Unsecured Revolving Credit Facility [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_LAndBGroupMember_lbl" xml:lang="en-US">L&amp;B Group [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="cli_LAndBGroupMember_lbl" xml:lang="en-US">L And B Group [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="cli_LAndBGroupMember_lbl" xml:lang="en-US">L&amp;B Group [Member]</label>
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    <loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="us-gaap_SubsequentEventTypeDomain" />
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US">Subsequent Event [Member]</label>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SubsequentEventMember_lbl" xml:lang="en-US">Subsequent Event [Member]</label>
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    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="cli_AlterraAtOverlookRidgeIIMember_lbl" xml:lang="en-US">Alterra At Overlook Ridge II [Member]</label>
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