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    <link:label id="lab_us-gaap_Goodwill_8D2CFF4C4B6584D52B90F9C1026BD828_label_en-US" xlink:label="lab_us-gaap_Goodwill_8D2CFF4C4B6584D52B90F9C1026BD828" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</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_Goodwill_8D2CFF4C4B6584D52B90F9C1026BD828" xlink:to="lab_us-gaap_Goodwill_8D2CFF4C4B6584D52B90F9C1026BD828" xlink:type="arc" />
    <link:label id="lab_us-gaap_GoodwillAcquiredDuringPeriod_FC57D30F7E5FA463C2D6F9C1026B7E6A_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAcquiredDuringPeriod_FC57D30F7E5FA463C2D6F9C1026B7E6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions from acquired businesses</link:label>
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    <link:label id="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_C374CB2DF4926B256390F9C1026BF155_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_C374CB2DF4926B256390F9C1026BF155" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to provisional amounts</link:label>
    <link:label id="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_C374CB2DF4926B256390F9C1026BF155_label_en-US" xlink:label="lab_us-gaap_GoodwillPurchaseAccountingAdjustments_C374CB2DF4926B256390F9C1026BF155" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Purchase Accounting Adjustments</link:label>
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    <link:label id="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_B3A7DB1A89CAECACAF13F9C1026BA062_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_B3A7DB1A89CAECACAF13F9C1026BA062" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign currency translation adjustments</link:label>
    <link:label id="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_B3A7DB1A89CAECACAF13F9C1026BA062_label_en-US" xlink:label="lab_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_B3A7DB1A89CAECACAF13F9C1026BA062" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill, Foreign Currency Translation Gain (Loss)</link:label>
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    <link:label id="lab_us-gaap_Goodwill_E7A8176E1764B54864A5F9C1026B8E37_periodEndLabel_en-US" xlink:label="lab_us-gaap_Goodwill_E7A8176E1764B54864A5F9C1026B8E37" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</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_Goodwill_E7A8176E1764B54864A5F9C1026B8E37" xlink:to="lab_us-gaap_Goodwill_E7A8176E1764B54864A5F9C1026B8E37" xlink:type="arc" />
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_A64A8EE8F467E925F44BF9C1026C95A6_terseLabel_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_A64A8EE8F467E925F44BF9C1026C95A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Amortization Period in Years</link:label>
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_A64A8EE8F467E925F44BF9C1026C95A6_label_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_A64A8EE8F467E925F44BF9C1026C95A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Finite-lived Intangible Assets, Weighted Average Useful Life</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_A64A8EE8F467E925F44BF9C1026C95A6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_A64A8EE8F467E925F44BF9C1026C95A6" xlink:to="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_A64A8EE8F467E925F44BF9C1026C95A6" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_DCEBE0DC10B2B5AA010BF9C1026CC412_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_DCEBE0DC10B2B5AA010BF9C1026CC412" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortized intangible assets, gross carrying amount</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_DCEBE0DC10B2B5AA010BF9C1026CC412_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_DCEBE0DC10B2B5AA010BF9C1026CC412" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_DCEBE0DC10B2B5AA010BF9C1026CC412" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsGross_DCEBE0DC10B2B5AA010BF9C1026CC412" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsGross_DCEBE0DC10B2B5AA010BF9C1026CC412" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1AEA7557D940AA50F8B1F9C1026C86C0_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1AEA7557D940AA50F8B1F9C1026C86C0" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accumulated Amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1AEA7557D940AA50F8B1F9C1026C86C0_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1AEA7557D940AA50F8B1F9C1026C86C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1AEA7557D940AA50F8B1F9C1026C86C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1AEA7557D940AA50F8B1F9C1026C86C0" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_1AEA7557D940AA50F8B1F9C1026C86C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_1F313496121D6187C378F9C1026CA2F9_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_1F313496121D6187C378F9C1026CA2F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization expense of finite-lived intangible assets</link:label>
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_1F313496121D6187C378F9C1026CA2F9_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_1F313496121D6187C378F9C1026CA2F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Intangible Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_1F313496121D6187C378F9C1026CA2F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_1F313496121D6187C378F9C1026CA2F9" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_1F313496121D6187C378F9C1026CA2F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_B5CD17E4897C8D173A12F9C1026C06D3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_B5CD17E4897C8D173A12F9C1026C06D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_B5CD17E4897C8D173A12F9C1026C06D3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_B5CD17E4897C8D173A12F9C1026C06D3" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_B5CD17E4897C8D173A12F9C1026C06D3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C067102AF86FDC05AF1AF9C1026C1100_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C067102AF86FDC05AF1AF9C1026C1100" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization expense in fiscal 2020</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C067102AF86FDC05AF1AF9C1026C1100_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C067102AF86FDC05AF1AF9C1026C1100" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, 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_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C067102AF86FDC05AF1AF9C1026C1100" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C067102AF86FDC05AF1AF9C1026C1100" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_C067102AF86FDC05AF1AF9C1026C1100" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C49FD1FDCDAD1F846217F9C1026D7F02_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C49FD1FDCDAD1F846217F9C1026D7F02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization expense in fiscal 2021</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_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C49FD1FDCDAD1F846217F9C1026D7F02" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C49FD1FDCDAD1F846217F9C1026D7F02" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_C49FD1FDCDAD1F846217F9C1026D7F02" xlink:type="arc" />
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_9128C46239DB75BE1A73F9C1026D57DE_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_9128C46239DB75BE1A73F9C1026D57DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_9128C46239DB75BE1A73F9C1026D57DE" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RetirementPlanSponsorLocationDomain_7D8C8977C983211E00CF01094ACDFD09_label_en-US" xlink:label="lab_us-gaap_RetirementPlanSponsorLocationDomain_7D8C8977C983211E00CF01094ACDFD09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Sponsor Location [Domain]</link:label>
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    <link:label id="lab_us-gaap_RetirementPlanTypeAxis_7AD6D43C8835BB0AF55701094ACEF25F_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeAxis_7AD6D43C8835BB0AF55701094ACEF25F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_7AD6D43C8835BB0AF55701094ACEF25F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RetirementPlanTypeDomain_53D867A66549EF74B3DD01094ACEC05A_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_53D867A66549EF74B3DD01094ACEC05A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement Plan Type [Domain]</link:label>
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    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_A5E228816F4706C56D7DDA89CCC5EE2F_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_A5E228816F4706C56D7DDA89CCC5EE2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
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    <link:label id="lab_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925_terseLabel_en-US" xlink:label="lab_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">New Revolving Credit Facility</link:label>
    <link:label id="lab_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925_label_en-US" xlink:label="lab_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Revolving Credit Facility [Member]</link:label>
    <link:label id="lab_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925_documentation_en-US" xlink:label="lab_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">New Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_NewRevolvingCreditFacilityMember" xlink:label="loc_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925" xlink:to="lab_ayi_NewRevolvingCreditFacilityMember_08DF869DA425769D4EACDA89CCC5B925" xlink:type="arc" />
    <link:label id="lab_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74_terseLabel_en-US" xlink:label="lab_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unsecured Delayed Draw Term Loan</link:label>
    <link:label id="lab_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74_label_en-US" xlink:label="lab_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unsecured Delayed Draw Term Loan [Member]</link:label>
    <link:label id="lab_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74_documentation_en-US" xlink:label="lab_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unsecured Delayed Draw Term Loan [Member]</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_UnsecuredDelayedDrawTermLoanMember" xlink:label="loc_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74" xlink:to="lab_ayi_UnsecuredDelayedDrawTermLoanMember_30D01095687C9D5C5031DA89CCC60B74" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_B88707662622F2A4B28EDA89CCC6DFA7_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_B88707662622F2A4B28EDA89CCC6DFA7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility</link:label>
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_B88707662622F2A4B28EDA89CCC6DFA7_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_B88707662622F2A4B28EDA89CCC6DFA7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_B88707662622F2A4B28EDA89CCC6DFA7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_B88707662622F2A4B28EDA89CCC6DFA7" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_B88707662622F2A4B28EDA89CCC6DFA7" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_0E239270E19ABDE82BA7DA89CCC93C07_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_0E239270E19ABDE82BA7DA89CCC93C07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Line Items]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_0E239270E19ABDE82BA7DA89CCC93C07_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_0E239270E19ABDE82BA7DA89CCC93C07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_0E239270E19ABDE82BA7DA89CCC93C07" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DebtInstrumentTerm_788F0A34FC3AF2197D21DA89CCC92EBB_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_788F0A34FC3AF2197D21DA89CCC92EBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term of notes</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentTerm_788F0A34FC3AF2197D21DA89CCC92EBB_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_788F0A34FC3AF2197D21DA89CCC92EBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_788F0A34FC3AF2197D21DA89CCC92EBB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTerm_788F0A34FC3AF2197D21DA89CCC92EBB" xlink:to="lab_us-gaap_DebtInstrumentTerm_788F0A34FC3AF2197D21DA89CCC92EBB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_6AFF81ABF559626AFD73DA89CCC91A36_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_6AFF81ABF559626AFD73DA89CCC91A36" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit facility</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_6AFF81ABF559626AFD73DA89CCC91A36_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_6AFF81ABF559626AFD73DA89CCC91A36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_6AFF81ABF559626AFD73DA89CCC91A36" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCredit_AA6243BE5247082A14CCDA89CCCA2C9A_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_AA6243BE5247082A14CCDA89CCCA2C9A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings outstanding under credit facility</link:label>
    <link:label id="lab_us-gaap_LineOfCredit_AA6243BE5247082A14CCDA89CCCA2C9A_label_en-US" xlink:label="lab_us-gaap_LineOfCredit_AA6243BE5247082A14CCDA89CCCA2C9A" 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_AA6243BE5247082A14CCDA89CCCA2C9A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCredit_AA6243BE5247082A14CCDA89CCCA2C9A" xlink:to="lab_us-gaap_LineOfCredit_AA6243BE5247082A14CCDA89CCCA2C9A" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E2B7F204EEF7374F2819DA89CCCA1BED_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E2B7F204EEF7374F2819DA89CCCA1BED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Applicable margins as determined by leverage ratio</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E2B7F204EEF7374F2819DA89CCCA1BED_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_E2B7F204EEF7374F2819DA89CCCA1BED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate</link:label>
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    <link:label id="lab_ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal_11084EF5671FF2CFC298DA89CCCA717A_terseLabel_en-US" xlink:label="lab_ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal_11084EF5671FF2CFC298DA89CCCA717A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Periodic payment maturity as percent of principal (percent)</link:label>
    <link:label id="lab_ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal_11084EF5671FF2CFC298DA89CCCA717A_label_en-US" xlink:label="lab_ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal_11084EF5671FF2CFC298DA89CCCA717A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Periodic Payment, Maturity, Percent of Principal</link:label>
    <link:label id="lab_ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal_11084EF5671FF2CFC298DA89CCCA717A_documentation_en-US" xlink:label="lab_ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal_11084EF5671FF2CFC298DA89CCCA717A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Periodic Payment, Maturity, Percent of Principal</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal" xlink:label="loc_ayi_DebtInstrumentPeriodicPaymentMaturityPercentofPrincipal_11084EF5671FF2CFC298DA89CCCA717A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_96AF8FD5F619D3486890DA89CCCA2F58_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_96AF8FD5F619D3486890DA89CCCA2F58" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitment fees rate</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_96AF8FD5F619D3486890DA89CCCA2F58_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_96AF8FD5F619D3486890DA89CCCA2F58" 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_96AF8FD5F619D3486890DA89CCCA2F58" xlink:type="locator" />
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    <link:label id="lab_ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum_8886C31369BD64C6469FDA89CCCAA4E9_terseLabel_en-US" xlink:label="lab_ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum_8886C31369BD64C6469FDA89CCCAA4E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum interest coverage ratio</link:label>
    <link:label id="lab_ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum_8886C31369BD64C6469FDA89CCCAA4E9_label_en-US" xlink:label="lab_ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum_8886C31369BD64C6469FDA89CCCAA4E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Interest Coverage Ratio, Minimum</link:label>
    <link:label id="lab_ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum_8886C31369BD64C6469FDA89CCCAA4E9_documentation_en-US" xlink:label="lab_ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum_8886C31369BD64C6469FDA89CCCAA4E9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Interest Coverage Ratio, Minimum</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum" xlink:label="loc_ayi_LineOfCreditFacilityCovenantTermsInterestCoverageRatioMinimum_8886C31369BD64C6469FDA89CCCAA4E9" xlink:type="locator" />
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    <link:label id="lab_ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum_E0EABF5EDAE1F2B18C04DA89CCCAF1D3_terseLabel_en-US" xlink:label="lab_ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum_E0EABF5EDAE1F2B18C04DA89CCCAF1D3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum leverage ratio</link:label>
    <link:label id="lab_ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum_E0EABF5EDAE1F2B18C04DA89CCCAF1D3_label_en-US" xlink:label="lab_ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum_E0EABF5EDAE1F2B18C04DA89CCCAF1D3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Leverage Ratio, Maximum</link:label>
    <link:label id="lab_ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum_E0EABF5EDAE1F2B18C04DA89CCCAF1D3_documentation_en-US" xlink:label="lab_ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum_E0EABF5EDAE1F2B18C04DA89CCCAF1D3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Covenant Terms, Leverage Ratio, Maximum</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum" xlink:label="loc_ayi_LineOfCreditFacilityCovenantTermsLeverageRatioMaximum_E0EABF5EDAE1F2B18C04DA89CCCAF1D3" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_7A3A475EE04301EDB947DA89CCCBFBAF_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_7A3A475EE04301EDB947DA89CCCBFBAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional borrowing capacity under revolving credit facility</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_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_1E03DE6E06646453EE00D765CB64F82A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_5C4DD85DF78688EB6D92D765CB641867_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_5C4DD85DF78688EB6D92D765CB641867" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</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_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5C4DD85DF78688EB6D92D765CB641867" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_1E20C1D6EF8890EDC84DF9C101049A1C_terseLabel_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_1E20C1D6EF8890EDC84DF9C101049A1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase obligations in fiscal 2020</link:label>
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_1E20C1D6EF8890EDC84DF9C101049A1C_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueWithinOneYear_1E20C1D6EF8890EDC84DF9C101049A1C" 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_1E20C1D6EF8890EDC84DF9C101049A1C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_9BFF17F3DA810CC6785DF9C101041955_terseLabel_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_9BFF17F3DA810CC6785DF9C101041955" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase obligations in fiscal 2021</link:label>
    <link:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_9BFF17F3DA810CC6785DF9C101041955_label_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInSecondYear_9BFF17F3DA810CC6785DF9C101041955" 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:label id="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_59094FDB892FA3556F2DF9C10104A0C8_terseLabel_en-US" xlink:label="lab_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_59094FDB892FA3556F2DF9C10104A0C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase obligations in fiscal 2022</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_RecordedUnconditionalPurchaseObligationDueInThirdYear" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationDueInThirdYear_59094FDB892FA3556F2DF9C10104A0C8" xlink:type="locator" />
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    <link:label id="lab_ayi_RecordedUnconditionalPurchaseObligationDueafterThirdYear_60D83D09609CE40BDDC4F9C101050445_terseLabel_en-US" xlink:label="lab_ayi_RecordedUnconditionalPurchaseObligationDueafterThirdYear_60D83D09609CE40BDDC4F9C101050445" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase obligations extending beyond August 31, 2022</link:label>
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    <link:label id="lab_ayi_RecordedUnconditionalPurchaseObligationDueafterThirdYear_60D83D09609CE40BDDC4F9C101050445_documentation_en-US" xlink:label="lab_ayi_RecordedUnconditionalPurchaseObligationDueafterThirdYear_60D83D09609CE40BDDC4F9C101050445" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Recorded Unconditional Purchase Obligation Due after Third Year</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_RecordedUnconditionalPurchaseObligationDueafterThirdYear" xlink:label="loc_ayi_RecordedUnconditionalPurchaseObligationDueafterThirdYear_60D83D09609CE40BDDC4F9C101050445" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ConcentrationRiskPercentage1_0DBFF3CF1AB4BFD79C62F9C101053415_verboseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_0DBFF3CF1AB4BFD79C62F9C101053415" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Portion of revenues (percent)</link:label>
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    <link:label id="lab_us-gaap_LossContingencyPatentsAllegedlyInfringedNumber_A4309B8041E14EA9D6A5F9C101051DF3_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyPatentsAllegedlyInfringedNumber_A4309B8041E14EA9D6A5F9C101051DF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of patents under alleged infringement claims (patents)</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_LossContingencyPatentsAllegedlyInfringedNumber" xlink:label="loc_us-gaap_LossContingencyPatentsAllegedlyInfringedNumber_A4309B8041E14EA9D6A5F9C101051DF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingencyPatentsAllegedlyInfringedNumber_A4309B8041E14EA9D6A5F9C101051DF3" xlink:to="lab_us-gaap_LossContingencyPatentsAllegedlyInfringedNumber_A4309B8041E14EA9D6A5F9C101051DF3" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingencyNumberOfDefendants_68900316653A40DD4ECFF9C10105C1BB_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyNumberOfDefendants_68900316653A40DD4ECFF9C10105C1BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of former executives accused</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_LossContingencyNumberOfDefendants" xlink:label="loc_us-gaap_LossContingencyNumberOfDefendants_68900316653A40DD4ECFF9C10105C1BB" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LossContingencyClaimsDismissedNumber_6CAE8405DF9F034E719CF9C10105F77D_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyClaimsDismissedNumber_6CAE8405DF9F034E719CF9C10105F77D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of initial claims under class action</link:label>
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    <link:label id="lab_us-gaap_LossContingencyNewClaimsFiledNumber_29E1866579FEDBB1EC76F9C10106B383_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingencyNewClaimsFiledNumber_29E1866579FEDBB1EC76F9C10106B383" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of claims dismissed</link:label>
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    <link:label id="lab_ayi_StandardProductWarrantyPeriod_33D1599BE222E2E1BE30F9C1010681CC_terseLabel_en-US" xlink:label="lab_ayi_StandardProductWarrantyPeriod_33D1599BE222E2E1BE30F9C1010681CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Standard product warranty period</link:label>
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    <link:label id="lab_us-gaap_RestrictedStockMember_76D5BEF7233C4940ACBAEFADA54877D4_label_en-US" xlink:label="lab_us-gaap_RestrictedStockMember_76D5BEF7233C4940ACBAEFADA54877D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock [Member]</link:label>
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    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_87701A1E871BF6A55A4CEFADA548C031_label_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_87701A1E871BF6A55A4CEFADA548C031" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs) [Member]</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_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_DC029DFACA164740B4FEEFADA548322E" xlink:type="locator" />
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    <link:label id="lab_ayi_ExercisePriceRangeOneMember_685B08936F3CB26DD693EFADA548F789_terseLabel_en-US" xlink:label="lab_ayi_ExercisePriceRangeOneMember_685B08936F3CB26DD693EFADA548F789" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">$40.01 - $100.00 (average life - 3.1 years)</link:label>
    <link:label id="lab_ayi_ExercisePriceRangeOneMember_685B08936F3CB26DD693EFADA548F789_label_en-US" xlink:label="lab_ayi_ExercisePriceRangeOneMember_685B08936F3CB26DD693EFADA548F789" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise Price Range One [Member]</link:label>
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    <link:loc xlink:href="ayi-20190831.xsd#ayi_ExercisePriceRangeOneMember" xlink:label="loc_ayi_ExercisePriceRangeOneMember_685B08936F3CB26DD693EFADA548F789" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ayi_ExercisePriceRangeOneMember_685B08936F3CB26DD693EFADA548F789" xlink:to="lab_ayi_ExercisePriceRangeOneMember_685B08936F3CB26DD693EFADA548F789" xlink:type="arc" />
    <link:label id="lab_ayi_ExercisePriceRangeTwoMember_FD09EF79D8C3D301136BEFADA54BF021_terseLabel_en-US" xlink:label="lab_ayi_ExercisePriceRangeTwoMember_FD09EF79D8C3D301136BEFADA54BF021" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">$100.01 - $160.00 (average life - 6.9 years)</link:label>
    <link:label id="lab_ayi_ExercisePriceRangeTwoMember_FD09EF79D8C3D301136BEFADA54BF021_label_en-US" xlink:label="lab_ayi_ExercisePriceRangeTwoMember_FD09EF79D8C3D301136BEFADA54BF021" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise Price Range Two [Member]</link:label>
    <link:label id="lab_ayi_ExercisePriceRangeTwoMember_FD09EF79D8C3D301136BEFADA54BF021_documentation_en-US" xlink:label="lab_ayi_ExercisePriceRangeTwoMember_FD09EF79D8C3D301136BEFADA54BF021" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exercise Price Range Two [Member]</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_ExercisePriceRangeTwoMember" xlink:label="loc_ayi_ExercisePriceRangeTwoMember_FD09EF79D8C3D301136BEFADA54BF021" xlink:type="locator" />
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    <link:label id="lab_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551_terseLabel_en-US" xlink:label="lab_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">$160.01 - $210.00 (average life - 6.2 years)</link:label>
    <link:label id="lab_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551_label_en-US" xlink:label="lab_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise Price Range Three [Member]</link:label>
    <link:label id="lab_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551_documentation_en-US" xlink:label="lab_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exercise Price Range Three [Member]</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_ExercisePriceRangeThreeMember" xlink:label="loc_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551" xlink:to="lab_ayi_ExercisePriceRangeThreeMember_1ED995B6D07A0129ECE7EFADA54B1551" xlink:type="arc" />
    <link:label id="lab_ayi_ExercisePriceRangeFourMember_A4C7DC792B69E4B5BD31EFADA54BCB40_terseLabel_en-US" xlink:label="lab_ayi_ExercisePriceRangeFourMember_A4C7DC792B69E4B5BD31EFADA54BCB40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">$210.01 - $239.76 (average life - 7.1 years)</link:label>
    <link:label id="lab_ayi_ExercisePriceRangeFourMember_A4C7DC792B69E4B5BD31EFADA54BCB40_label_en-US" xlink:label="lab_ayi_ExercisePriceRangeFourMember_A4C7DC792B69E4B5BD31EFADA54BCB40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise Price Range Four [Member]</link:label>
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    <link:loc xlink:href="ayi-20190831.xsd#ayi_ExercisePriceRangeFourMember" xlink:label="loc_ayi_ExercisePriceRangeFourMember_A4C7DC792B69E4B5BD31EFADA54BCB40" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_DA61DFAA1B2712363D54EFADA5547D49_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_DA61DFAA1B2712363D54EFADA5547D49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range of option exercise prices: Weighted Average Exercise Price, Exercisable (in dollars per share)</link:label>
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    <link:label id="lab_ayi_OtherLongTermAssets_7E8FE7A17F9A24221453FECC8A96012E_totalLabel_en-US" xlink:label="lab_ayi_OtherLongTermAssets_7E8FE7A17F9A24221453FECC8A96012E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other long-term assets</link:label>
    <link:label id="lab_ayi_OtherLongTermAssets_7E8FE7A17F9A24221453FECC8A96012E_label_en-US" xlink:label="lab_ayi_OtherLongTermAssets_7E8FE7A17F9A24221453FECC8A96012E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Long Term Assets</link:label>
    <link:label id="lab_ayi_OtherLongTermAssets_7E8FE7A17F9A24221453FECC8A96012E_documentation_en-US" xlink:label="lab_ayi_OtherLongTermAssets_7E8FE7A17F9A24221453FECC8A96012E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate carrying amount, as of the balance sheet date, of noncurrent assets which consist primarily of long-term investments, assets held for sale, deferred debt issuance costs, capitalized software costs, deferred sales and marketing costs and other miscellaneous long-term assets. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_OtherLongTermAssets" xlink:label="loc_ayi_OtherLongTermAssets_7E8FE7A17F9A24221453FECC8A96012E" xlink:type="locator" />
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    <link:label id="lab_ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered_60EC4A2F055028910355FECC8A96D16A_terseLabel_en-US" xlink:label="lab_ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered_60EC4A2F055028910355FECC8A96D16A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of former employees covered under life insurance policy</link:label>
    <link:label id="lab_ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered_60EC4A2F055028910355FECC8A96D16A_label_en-US" xlink:label="lab_ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered_60EC4A2F055028910355FECC8A96D16A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Life Insurance, Number of Current and Former Employees Covered</link:label>
    <link:label id="lab_ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered_60EC4A2F055028910355FECC8A96D16A_documentation_en-US" xlink:label="lab_ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered_60EC4A2F055028910355FECC8A96D16A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Life Insurance, Number of Current and Former Employees Covered</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered" xlink:label="loc_ayi_LifeInsuranceNumberofCurrentandFormerEmployeesCovered_60EC4A2F055028910355FECC8A96D16A" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract_B3229400778436112332FECC8A962A40_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract_B3229400778436112332FECC8A962A40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Long-Term Liabilities [Abstract]</link:label>
    <link:label id="lab_us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract_B3229400778436112332FECC8A962A40_label_en-US" xlink:label="lab_us-gaap_LiabilitiesOtherThanLongTermDebtNoncurrentAbstract_B3229400778436112332FECC8A962A40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities, Other than Long-term Debt, Noncurrent [Abstract]</link:label>
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    <link:label id="lab_ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_5093B08F1BBCAA692008FECC8A9669B6_terseLabel_en-US" xlink:label="lab_ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_5093B08F1BBCAA692008FECC8A9669B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred compensation and postretirement benefits other than pensions</link:label>
    <link:label id="lab_ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_5093B08F1BBCAA692008FECC8A9669B6_label_en-US" xlink:label="lab_ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_5093B08F1BBCAA692008FECC8A9669B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Compensation and Postretirement Defined Benefit Plans, Liabilities, Noncurrent</link:label>
    <link:label id="lab_ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_5093B08F1BBCAA692008FECC8A9669B6_documentation_en-US" xlink:label="lab_ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_5093B08F1BBCAA692008FECC8A9669B6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements and other postretirement benefit plans (other than pensions) payable beyond one year (or the operating cycle, if longer).</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_ayi_DeferredCompensationAndPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_5093B08F1BBCAA692008FECC8A9669B6" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_237534F48AD16E7D7743FECC8A96AA82_verboseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiabilityNoncurrent_237534F48AD16E7D7743FECC8A96AA82" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Service-type warranties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_237534F48AD16E7D7743FECC8A96AA82" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProductWarrantyAccrualNoncurrent_6C8B725674067F09B185FED775045F0B_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualNoncurrent_6C8B725674067F09B185FED775045F0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Service-type warranties</link:label>
    <link:label id="lab_us-gaap_ProductWarrantyAccrualNoncurrent_6C8B725674067F09B185FED775045F0B_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualNoncurrent_6C8B725674067F09B185FED775045F0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product Warranty Accrual, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductWarrantyAccrualNoncurrent" xlink:label="loc_us-gaap_ProductWarrantyAccrualNoncurrent_6C8B725674067F09B185FED775045F0B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_62C91FD71D53E902175FFECC8A97C4DC_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_62C91FD71D53E902175FFECC8A97C4DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Uncertain tax positions liability, including interest</link:label>
    <link:label id="lab_us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_62C91FD71D53E902175FFECC8A97C4DC_label_en-US" xlink:label="lab_us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_62C91FD71D53E902175FFECC8A97C4DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liability for Uncertainty in Income Taxes, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilityForUncertainTaxPositionsNoncurrent" xlink:label="loc_us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_62C91FD71D53E902175FFECC8A97C4DC" xlink:type="locator" />
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    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_F7DE636B34F84B4752C2FECC8A9798A4_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_F7DE636B34F84B4752C2FECC8A9798A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_F7DE636B34F84B4752C2FECC8A9798A4_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_F7DE636B34F84B4752C2FECC8A9798A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_F7DE636B34F84B4752C2FECC8A9798A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilitiesNoncurrent_F7DE636B34F84B4752C2FECC8A9798A4" xlink:to="lab_us-gaap_OtherLiabilitiesNoncurrent_F7DE636B34F84B4752C2FECC8A9798A4" xlink:type="arc" />
    <link:label id="lab_ayi_OtherLongTermLiabilities_057FBC5A1384FBEF2278FECC8A97307A_totalLabel_en-US" xlink:label="lab_ayi_OtherLongTermLiabilities_057FBC5A1384FBEF2278FECC8A97307A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other long-term liabilities</link:label>
    <link:loc xlink:href="ayi-20190831.xsd#ayi_OtherLongTermLiabilities" xlink:label="loc_ayi_OtherLongTermLiabilities_057FBC5A1384FBEF2278FECC8A97307A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ayi_OtherLongTermLiabilities_057FBC5A1384FBEF2278FECC8A97307A" xlink:to="lab_ayi_OtherLongTermLiabilities_057FBC5A1384FBEF2278FECC8A97307A" xlink:type="arc" />
    <link:label id="lab_ayi_DeferredCompensationArrangementWithIndividualAutomaticContributionRate_CF9756B9FF72AA404CC4FECC8A97C616_terseLabel_en-US" xlink:label="lab_ayi_DeferredCompensationArrangementWithIndividualAutomaticContributionRate_CF9756B9FF72AA404CC4FECC8A97C616" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage contribution rate of eligible employee's compensation</link:label>
    <link:label id="lab_ayi_DeferredCompensationArrangementWithIndividualAutomaticContributionRate_CF9756B9FF72AA404CC4FECC8A97C616_label_en-US" xlink:label="lab_ayi_DeferredCompensationArrangementWithIndividualAutomaticContributionRate_CF9756B9FF72AA404CC4FECC8A97C616" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Compensation Arrangement with Individual, Automatic Contribution Rate</link:label>
    <link:label id="lab_ayi_DeferredCompensationArrangementWithIndividualAutomaticContributionRate_CF9756B9FF72AA404CC4FECC8A97C616_documentation_en-US" xlink:label="lab_ayi_DeferredCompensationArrangementWithIndividualAutomaticContributionRate_CF9756B9FF72AA404CC4FECC8A97C616" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The percentage of annual salary that an employee receives as an automatic contribution under the plan.</link:label>
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    <link:label id="lab_us-gaap_AccountsReceivableNetCurrent_EFC27A91D2E7FB057E4ED6B09D966ED8_verboseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_EFC27A91D2E7FB057E4ED6B09D966ED8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, less reserve for doubtful accounts of $1.0 and $1.3, respectively</link:label>
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    <link:label id="lab_us-gaap_InventoryNet_252031E2C82DA75ADF8BD6B09D9678C3_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_252031E2C82DA75ADF8BD6B09D9678C3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
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    <link:label id="lab_us-gaap_AssetsCurrent_396415B355A799CDB4E9D6B09D97DA78_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_396415B355A799CDB4E9D6B09D97DA78" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
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