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    <link:label id="lab_ipg_UnsecuredDebt3.75NoteDuein2023Member_0C213CD1CA39103CF24363A131F78BAF_label_en-US" xlink:label="lab_ipg_UnsecuredDebt3.75NoteDuein2023Member_0C213CD1CA39103CF24363A131F78BAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unsecured Debt 3.75% Note Due in 2023 [Member]</link:label>
    <link:label id="lab_ipg_UnsecuredDebt3.75NoteDuein2023Member_0C213CD1CA39103CF24363A131F78BAF_documentation_en-US" xlink:label="lab_ipg_UnsecuredDebt3.75NoteDuein2023Member_0C213CD1CA39103CF24363A131F78BAF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unsecured Debt 3.75% Note Due in 2023 [Member]</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_UnsecuredDebt3.75NoteDuein2023Member" xlink:label="loc_ipg_UnsecuredDebt3.75NoteDuein2023Member_0C213CD1CA39103CF24363A131F78BAF" xlink:type="locator" />
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    <link:label id="lab_ipg_UnsecuredDebt4.20NotesMember_0D73849966ACAFC4259863A131F794E9_terseLabel_en-US" xlink:label="lab_ipg_UnsecuredDebt4.20NotesMember_0D73849966ACAFC4259863A131F794E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4.20% Notes Due 2024 (less unamortized discount and issuance costs of $0.4 and $1.8, respectively)</link:label>
    <link:label id="lab_ipg_UnsecuredDebt4.20NotesMember_0D73849966ACAFC4259863A131F794E9_label_en-US" xlink:label="lab_ipg_UnsecuredDebt4.20NotesMember_0D73849966ACAFC4259863A131F794E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unsecured Debt 4.20% Notes [Member]</link:label>
    <link:label id="lab_ipg_UnsecuredDebt4.20NotesMember_0D73849966ACAFC4259863A131F794E9_documentation_en-US" xlink:label="lab_ipg_UnsecuredDebt4.20NotesMember_0D73849966ACAFC4259863A131F794E9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unsecured Debt 4.20% Notes [Member]</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_UnsecuredDebt4.20NotesMember" xlink:label="loc_ipg_UnsecuredDebt4.20NotesMember_0D73849966ACAFC4259863A131F794E9" xlink:type="locator" />
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    <link:label id="lab_ipg_UnsecuredDebt4.65NotesMember_83B7DB69FE222BF343AA63A131F72D8A_verboseLabel_en-US" xlink:label="lab_ipg_UnsecuredDebt4.65NotesMember_83B7DB69FE222BF343AA63A131F72D8A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">4.65% Notes Due 2028 (less unamortized discount and issuance costs of $1.5 and $3.9, respectively)</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_UnsecuredDebt4.65NotesMember" xlink:label="loc_ipg_UnsecuredDebt4.65NotesMember_83B7DB69FE222BF343AA63A131F72D8A" xlink:type="locator" />
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    <link:label id="lab_ipg_UnsecuredDebt5.40NotesMember_45AF18365938647DE0BC63A131F74CB6_verboseLabel_en-US" xlink:label="lab_ipg_UnsecuredDebt5.40NotesMember_45AF18365938647DE0BC63A131F74CB6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">5.40% Notes Due 2048 (less unamortized discount and issuance costs of $2.7 and $5.4, respectively)</link:label>
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    <link:label id="lab_us-gaap_LoansPayableMember_07B8F0D86BA4A5CBC8EC63A131F757C0_terseLabel_en-US" xlink:label="lab_us-gaap_LoansPayableMember_07B8F0D86BA4A5CBC8EC63A131F757C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term Loan Due 2021 (LIBOR plus 1.25%)</link:label>
    <link:label id="lab_us-gaap_LoansPayableMember_07B8F0D86BA4A5CBC8EC63A131F757C0_label_en-US" xlink:label="lab_us-gaap_LoansPayableMember_07B8F0D86BA4A5CBC8EC63A131F757C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Payable [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_07B8F0D86BA4A5CBC8EC63A131F757C0" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NotesPayableOtherPayablesMember_E067B8FC57BB3CE289CC63A131F70D9A_terseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableOtherPayablesMember_E067B8FC57BB3CE289CC63A131F70D9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other notes payable and capitalized leases</link:label>
    <link:label id="lab_us-gaap_NotesPayableOtherPayablesMember_E067B8FC57BB3CE289CC63A131F70D9A_label_en-US" xlink:label="lab_us-gaap_NotesPayableOtherPayablesMember_E067B8FC57BB3CE289CC63A131F70D9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes Payable, Other Payables [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NotesPayableOtherPayablesMember" xlink:label="loc_us-gaap_NotesPayableOtherPayablesMember_E067B8FC57BB3CE289CC63A131F70D9A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentLineItems_0E1587DC98C7F182A20163A131F8BC7B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_0E1587DC98C7F182A20163A131F8BC7B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_0E1587DC98C7F182A20163A131F8BC7B_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_0E1587DC98C7F182A20163A131F8BC7B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_0E1587DC98C7F182A20163A131F8BC7B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_3E27F73155FC6AC2286863A131F8485B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_3E27F73155FC6AC2286863A131F8485B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Notes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_3E27F73155FC6AC2286863A131F8485B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_C00BB20F5488EC1B983363A131F82832_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_C00BB20F5488EC1B983363A131F82832" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, gross</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_C00BB20F5488EC1B983363A131F82832_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_C00BB20F5488EC1B983363A131F82832" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_C00BB20F5488EC1B983363A131F82832" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_C00BB20F5488EC1B983363A131F82832" xlink:to="lab_us-gaap_DebtInstrumentCarryingAmount_C00BB20F5488EC1B983363A131F82832" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtCurrent_FE1C92C8784429AECC1F63A131F8ABE5_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_FE1C92C8784429AECC1F63A131F8ABE5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, current maturities</link:label>
    <link:label id="lab_us-gaap_LongTermDebtCurrent_FE1C92C8784429AECC1F63A131F8ABE5_label_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_FE1C92C8784429AECC1F63A131F8ABE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Current Maturities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_FE1C92C8784429AECC1F63A131F8ABE5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtCurrent_FE1C92C8784429AECC1F63A131F8ABE5" xlink:to="lab_us-gaap_LongTermDebtCurrent_FE1C92C8784429AECC1F63A131F8ABE5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtNoncurrent_2ABB55AA3CF1820C642463A131F85E20_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_2ABB55AA3CF1820C642463A131F85E20" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, excluding current maturities</link:label>
    <link:label id="lab_us-gaap_LongTermDebtNoncurrent_2ABB55AA3CF1820C642463A131F85E20_label_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_2ABB55AA3CF1820C642463A131F85E20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Excluding Current Maturities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_2ABB55AA3CF1820C642463A131F85E20" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_2ABB55AA3CF1820C642463A131F85E20" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_2ABB55AA3CF1820C642463A131F85E20" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_28247F9F4817A97ECA4463A131F817FF_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_28247F9F4817A97ECA4463A131F817FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument, unamortized discount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscount_28247F9F4817A97ECA4463A131F817FF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscount_28247F9F4817A97ECA4463A131F817FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unamortized Discount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_28247F9F4817A97ECA4463A131F817FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscount_28247F9F4817A97ECA4463A131F817FF" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedDiscount_28247F9F4817A97ECA4463A131F817FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnamortizedDebtIssuanceExpense_8CBC7929E70DFE7F507663A131F9799E_terseLabel_en-US" xlink:label="lab_us-gaap_UnamortizedDebtIssuanceExpense_8CBC7929E70DFE7F507663A131F9799E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deb instrument, unamortized debt issuance costs</link:label>
    <link:label id="lab_us-gaap_UnamortizedDebtIssuanceExpense_8CBC7929E70DFE7F507663A131F9799E_label_en-US" xlink:label="lab_us-gaap_UnamortizedDebtIssuanceExpense_8CBC7929E70DFE7F507663A131F9799E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unamortized Debt Issuance Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnamortizedDebtIssuanceExpense" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_8CBC7929E70DFE7F507663A131F9799E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LongTermDebtFairValue_CBBB9502094EB8F47EFD63A131F9BD9A_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_CBBB9502094EB8F47EFD63A131F9BD9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, fair value</link:label>
    <link:label id="lab_us-gaap_LongTermDebtFairValue_CBBB9502094EB8F47EFD63A131F9BD9A_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_CBBB9502094EB8F47EFD63A131F9BD9A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_CBBB9502094EB8F47EFD63A131F9BD9A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LoansPayableFairValueDisclosure_DF02C7D2DFA9FC0FC2D763A131F9B032_terseLabel_en-US" xlink:label="lab_us-gaap_LoansPayableFairValueDisclosure_DF02C7D2DFA9FC0FC2D763A131F9B032" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans Payable, Fair Value Disclosure</link:label>
    <link:label id="lab_us-gaap_LoansPayableFairValueDisclosure_DF02C7D2DFA9FC0FC2D763A131F9B032_label_en-US" xlink:label="lab_us-gaap_LoansPayableFairValueDisclosure_DF02C7D2DFA9FC0FC2D763A131F9B032" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans Payable, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansPayableFairValueDisclosure" xlink:label="loc_us-gaap_LoansPayableFairValueDisclosure_DF02C7D2DFA9FC0FC2D763A131F9B032" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentMaturityDate_F3A4DCEB421AADA5465963A131F9D344_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_F3A4DCEB421AADA5465963A131F9D344" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument, maturity date</link:label>
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    <link:label id="lab_ipg_InvestmentFundMember_E0A32050CD1609B6CA5B4B6BF6E248EC_terseLabel_en-US" xlink:label="lab_ipg_InvestmentFundMember_E0A32050CD1609B6CA5B4B6BF6E248EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment funds</link:label>
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    <link:label id="lab_ipg_TotalplanassetssubjecttolevelingMember_B7DAB8107C65B21FA46E4B6BF6E350D2_terseLabel_en-US" xlink:label="lab_ipg_TotalplanassetssubjecttolevelingMember_B7DAB8107C65B21FA46E4B6BF6E350D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total plan assets subject to leveling</link:label>
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    <link:label id="lab_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_C5D45B45690EF2816E99550766A28844_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_C5D45B45690EF2816E99550766A28844" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_398BB903EBBB75485634550766A38EF0" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_32F9DD40D0A36AE10A73550766A35730" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_B7CA9363AA6483430BB1550766A35D25" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_DE777D06C03AF2EE4BFB550766A35B43" xlink:type="locator" />
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    <link:label id="lab_ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount_C6885A8EAEFBFE3927885EB16020E623_label_en-US" xlink:label="lab_ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount_C6885A8EAEFBFE3927885EB16020E623" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Available Capacity Increase Amount</link:label>
    <link:label id="lab_ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount_C6885A8EAEFBFE3927885EB16020E623_documentation_en-US" xlink:label="lab_ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount_C6885A8EAEFBFE3927885EB16020E623" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount that the Company is able to increase the commitments under the credit facility agreement, subject to certain conditions.</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount" xlink:label="loc_ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount_C6885A8EAEFBFE3927885EB16020E623" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount_C6885A8EAEFBFE3927885EB16020E623" xlink:to="lab_ipg_LineofCreditFacilityAvailableCapacityIncreaseAmount_C6885A8EAEFBFE3927885EB16020E623" xlink:type="arc" />
    <link:label id="lab_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11_terseLabel_en-US" xlink:label="lab_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Limits on letters of credit</link:label>
    <link:label id="lab_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11_label_en-US" xlink:label="lab_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Limits on Letters of Credit</link:label>
    <link:label id="lab_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11_documentation_en-US" xlink:label="lab_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Limit of borrowings on letters of credit under the credit facility agreement.</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_LineofCreditFacilityLimitsonLettersofCredit" xlink:label="loc_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11" xlink:to="lab_ipg_LineofCreditFacilityLimitsonLettersofCredit_450AB08EBF3813341F495EB160206D11" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCredit_A90E80254084AF1BB6A45EB160202524_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_A90E80254084AF1BB6A45EB160202524" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit facility, amount outstanding</link:label>
    <link:label id="lab_us-gaap_LineOfCredit_A90E80254084AF1BB6A45EB160202524_label_en-US" xlink:label="lab_us-gaap_LineOfCredit_A90E80254084AF1BB6A45EB160202524" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Line of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_A90E80254084AF1BB6A45EB160202524" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCredit_A90E80254084AF1BB6A45EB160202524" xlink:to="lab_us-gaap_LineOfCredit_A90E80254084AF1BB6A45EB160202524" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityAverageOutstandingAmount_D1181B5830B405276E485F9CE661E185_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityAverageOutstandingAmount_D1181B5830B405276E485F9CE661E185" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Average Outstanding Amount</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityAverageOutstandingAmount_D1181B5830B405276E485F9CE661E185_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityAverageOutstandingAmount_D1181B5830B405276E485F9CE661E185" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Average Outstanding Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityAverageOutstandingAmount" xlink:label="loc_us-gaap_LineOfCreditFacilityAverageOutstandingAmount_D1181B5830B405276E485F9CE661E185" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityAverageOutstandingAmount_D1181B5830B405276E485F9CE661E185" xlink:to="lab_us-gaap_LineOfCreditFacilityAverageOutstandingAmount_D1181B5830B405276E485F9CE661E185" xlink:type="arc" />
    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_89366FA2A8FB7FE52B375EB1602071F5_terseLabel_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_89366FA2A8FB7FE52B375EB1602071F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of credit, amount outstanding</link:label>
    <link:label id="lab_us-gaap_LettersOfCreditOutstandingAmount_89366FA2A8FB7FE52B375EB1602071F5_label_en-US" xlink:label="lab_us-gaap_LettersOfCreditOutstandingAmount_89366FA2A8FB7FE52B375EB1602071F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letters of Credit Outstanding, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="loc_us-gaap_LettersOfCreditOutstandingAmount_89366FA2A8FB7FE52B375EB1602071F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LettersOfCreditOutstandingAmount_89366FA2A8FB7FE52B375EB1602071F5" xlink:to="lab_us-gaap_LettersOfCreditOutstandingAmount_89366FA2A8FB7FE52B375EB1602071F5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_DD52D32C5149C3B7B93B5EB160216CA1_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_DD52D32C5149C3B7B93B5EB160216CA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit facility, remaining borrowing capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_DD52D32C5149C3B7B93B5EB160216CA1_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_DD52D32C5149C3B7B93B5EB160216CA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Remaining Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_DD52D32C5149C3B7B93B5EB160216CA1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_DD52D32C5149C3B7B93B5EB160216CA1" xlink:to="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_DD52D32C5149C3B7B93B5EB160216CA1" xlink:type="arc" />
    <link:label id="lab_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C_terseLabel_en-US" xlink:label="lab_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Margin for base rate advances</link:label>
    <link:label id="lab_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C_label_en-US" xlink:label="lab_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Margin for base rate advances</link:label>
    <link:label id="lab_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C_documentation_en-US" xlink:label="lab_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Margin for base rate advances under the Credit Agreement.</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_MarginForBaseRateAdvances" xlink:label="loc_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C" xlink:to="lab_ipg_MarginForBaseRateAdvances_700B6E7A9A7B781011715EB16021A65C" xlink:type="arc" />
    <link:label id="lab_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA_terseLabel_en-US" xlink:label="lab_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Margin for Eurocurrency rate advances</link:label>
    <link:label id="lab_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA_label_en-US" xlink:label="lab_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Margin for Eurocurrency rate advances</link:label>
    <link:label id="lab_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA_documentation_en-US" xlink:label="lab_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Margin for Eurocurrency rate advances under the Credit Agreement.</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_MarginForEurocurrencyRateAdvances" xlink:label="loc_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA" xlink:to="lab_ipg_MarginForEurocurrencyRateAdvances_8B704448D46A740753235EB16021CBFA" xlink:type="arc" />
    <link:label id="lab_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD_terseLabel_en-US" xlink:label="lab_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Annual rate for fronting fees accrued on letters of credit</link:label>
    <link:label id="lab_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD_label_en-US" xlink:label="lab_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Annual rate for fronting fees accrued on letters of credit</link:label>
    <link:label id="lab_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD_documentation_en-US" xlink:label="lab_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Annual rate for fronting fees accrued on the aggregate amount of letters of credit outstanding.</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit" xlink:label="loc_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD" xlink:to="lab_ipg_AnnualRateForFrontingFeesAccruedOnLettersOfCredit_B80A9DB2C84F16F2A8B55EB16021D2FD" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_8044A9EFE9B01C4FA9355EB160219595_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_8044A9EFE9B01C4FA9355EB160219595" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Annual facility fee</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_8044A9EFE9B01C4FA9355EB160219595_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_8044A9EFE9B01C4FA9355EB160219595" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Commitment Fee Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_8044A9EFE9B01C4FA9355EB160219595" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_8044A9EFE9B01C4FA9355EB160219595" xlink:to="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_8044A9EFE9B01C4FA9355EB160219595" xlink:type="arc" />
    <link:label id="lab_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B_terseLabel_en-US" xlink:label="lab_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leverage ratio maximum</link:label>
    <link:label id="lab_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B_label_en-US" xlink:label="lab_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leverage ratio maximum</link:label>
    <link:label id="lab_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B_documentation_en-US" xlink:label="lab_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Leverage ratio covenant in the Credit Agreement that requires that we maintain a maximum ratio of debt as of the last day of such fiscal quarter to EBITDA, as defined in the Credit Agreement, for the four quarters then ended.</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_LeverageRatioMaximum" xlink:label="loc_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B" xlink:to="lab_ipg_LeverageRatioMaximum_93B6654DEBC3B26EC1F65EB16022852B" xlink:type="arc" />
    <link:label id="lab_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C_terseLabel_en-US" xlink:label="lab_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leverage Ratio Acquisition Price Threshold</link:label>
    <link:label id="lab_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C_label_en-US" xlink:label="lab_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leverage Ratio Acquisition Price Threshold</link:label>
    <link:label id="lab_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C_documentation_en-US" xlink:label="lab_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Leverage Ratio Acquisition Price Threshold</link:label>
    <link:loc xlink:href="ipg-20191231.xsd#ipg_LeverageRatioAcquisitionPriceThreshold" xlink:label="loc_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C" xlink:to="lab_ipg_LeverageRatioAcquisitionPriceThreshold_F7EC26ECA64E811A5EE65EB160220F2C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_B0D4693825A4487722155EB16022DDA9_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_B0D4693825A4487722155EB16022DDA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit facility, current borrowing capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_B0D4693825A4487722155EB16022DDA9_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_B0D4693825A4487722155EB16022DDA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Current Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_B0D4693825A4487722155EB16022DDA9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_B0D4693825A4487722155EB16022DDA9" xlink:to="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_B0D4693825A4487722155EB16022DDA9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtWeightedAverageInterestRateOverTime_FF935A9284AFA2F887A45EB160234C50_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtWeightedAverageInterestRateOverTime_FF935A9284AFA2F887A45EB160234C50" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit facility, weighted average interest rate, over time</link:label>
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    <link:label id="lab_us-gaap_OtherNoncashIncomeExpense_E8D7B6E49367FDA2694E543E1CBC187E_label_en-US" xlink:label="lab_us-gaap_OtherNoncashIncomeExpense_E8D7B6E49367FDA2694E543E1CBC187E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Noncash Income (Expense)</link:label>
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    <link:label id="lab_us-gaap_IncreaseDecreaseInUnbilledReceivables_B87CED2FE3E1904D6FFE543E1CBD547E_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInUnbilledReceivables_B87CED2FE3E1904D6FFE543E1CBD547E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, billable to clients</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInUnbilledReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInUnbilledReceivables_B87CED2FE3E1904D6FFE543E1CBD547E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_89A630B87D69274636F3543E1CBDD06E_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_89A630B87D69274636F3543E1CBDD06E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_89A630B87D69274636F3543E1CBDD06E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_8E870115BDEE913444074B6BF734391F_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_8E870115BDEE913444074B6BF734391F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Contingent Consideration [Line Items]</link:label>
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    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_D7F0C98646CDA9902AF44B6BF734EA03_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_D7F0C98646CDA9902AF44B6BF734EA03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation Due in Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_D7F0C98646CDA9902AF44B6BF734EA03" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_48393337928287F945E84B6BF734A804_terseLabel_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_48393337928287F945E84B6BF734A804" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future contingent acquisition obligation due in 2019</link:label>
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_48393337928287F945E84B6BF734A804_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_48393337928287F945E84B6BF734A804" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation Due in Second Year</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_48393337928287F945E84B6BF734A804" xlink:to="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_48393337928287F945E84B6BF734A804" xlink:type="arc" />
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_1EE763EA313AB41B1C3B4B6BF73590EA_terseLabel_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_1EE763EA313AB41B1C3B4B6BF73590EA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future contingent acquisition obligation due in 2020</link:label>
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_1EE763EA313AB41B1C3B4B6BF73590EA_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_1EE763EA313AB41B1C3B4B6BF73590EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation Due in Third Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_1EE763EA313AB41B1C3B4B6BF73590EA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear_B065A1145778ECB49B014B6BF735C397_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear_B065A1145778ECB49B014B6BF735C397" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation Due in Fourth Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear_B065A1145778ECB49B014B6BF735C397" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear_B065A1145778ECB49B014B6BF735C397" xlink:to="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInFourthYear_B065A1145778ECB49B014B6BF735C397" xlink:type="arc" />
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    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInFifthYear_EA510F1CEBA6DDA550254B6BF735AA83_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInFifthYear_EA510F1CEBA6DDA550254B6BF735AA83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation Due in Fifth Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueInFifthYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInFifthYear_EA510F1CEBA6DDA550254B6BF735AA83" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_FC78430C8E1CA2B3D6594B6BF7353EA9_terseLabel_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_FC78430C8E1CA2B3D6594B6BF7353EA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future contingent acquisition obligation due thereafter</link:label>
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_FC78430C8E1CA2B3D6594B6BF7353EA9_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_FC78430C8E1CA2B3D6594B6BF7353EA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation Due after Fifth Year</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_FC78430C8E1CA2B3D6594B6BF7353EA9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_FC78430C8E1CA2B3D6594B6BF7353EA9" xlink:to="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueAfterFifthYear_FC78430C8E1CA2B3D6594B6BF7353EA9" xlink:type="arc" />
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligation_B80E51428E3E7A47FD084B6BF735C7AD_totalLabel_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligation_B80E51428E3E7A47FD084B6BF735C7AD" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Future contingent acquisition obligation due, total</link:label>
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligation_B80E51428E3E7A47FD084B6BF735C7AD_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligation_B80E51428E3E7A47FD084B6BF735C7AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligation" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligation_B80E51428E3E7A47FD084B6BF735C7AD" xlink:type="locator" />
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    <link:label id="lab_ipg_PropertyandEquipmentAbstract_E27FAF67CBFC16ECA9584B6BF74C04E1_label_en-US" xlink:label="lab_ipg_PropertyandEquipmentAbstract_E27FAF67CBFC16ECA9584B6BF74C04E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property and Equipment [Abstract]</link:label>
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    <link:loc xlink:href="ipg-20191231.xsd#ipg_PropertyandEquipmentAbstract" xlink:label="loc_ipg_PropertyandEquipmentAbstract_E27FAF67CBFC16ECA9584B6BF74C04E1" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_436A0DD4B1749596D7534B6BF74D5B35_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_436A0DD4B1749596D7534B6BF74D5B35" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Table Text Block]</link:label>
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