<SEC-DOCUMENT>0001127602-20-028252.txt : 20201105
<SEC-HEADER>0001127602-20-028252.hdr.sgml : 20201105
<ACCEPTANCE-DATETIME>20201105170230
ACCESSION NUMBER:		0001127602-20-028252
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201103
FILED AS OF DATE:		20201105
DATE AS OF CHANGE:		20201105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SARVADI PAUL J
		CENTRAL INDEX KEY:			0001032399

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13998
		FILM NUMBER:		201291416

	MAIL ADDRESS:	
		STREET 1:		C/O INSPERITY
		STREET 2:		19001 CRESCENT SPRINGS DR
		CITY:			KINGWOOD
		STATE:			TX
		ZIP:			77339

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INSPERITY, INC.
		CENTRAL INDEX KEY:			0001000753
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HELP SUPPLY SERVICES [7363]
		IRS NUMBER:				760479645
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		19001 CRESCENT SPRINGS DR
		CITY:			KINGWOOD
		STATE:			TX
		ZIP:			77339
		BUSINESS PHONE:		7133588986

	MAIL ADDRESS:	
		STREET 1:		19001 CRESCENT SPRINGS DR
		CITY:			KINGWOOD
		STATE:			TX
		ZIP:			77339

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ADMINISTAFF INC \DE\
		DATE OF NAME CHANGE:	19950915
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-11-03</periodOfReport>

    <issuer>
        <issuerCik>0001000753</issuerCik>
        <issuerName>INSPERITY, INC.</issuerName>
        <issuerTradingSymbol>NSP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001032399</rptOwnerCik>
            <rptOwnerName>SARVADI PAUL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>19001 CRESCENT SPRINGS DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>KINGWOOD</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77339</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <officerTitle>Chairman of the Board &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-11-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>42075</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>80.01</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>631927</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-11-04</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>24000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>86.57</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1019612</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Self, As General Partner of Our Ship Limited Partnership, Ltd.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Weighted average price. Actual prices ranged from $80.00 to $80.52 Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders.</footnote>
        <footnote id="F2">Weighted average price. Actual prices ranged from $86.50 to $86.66. Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Insperity, Inc. or its stockholders.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Daniel D. Herink, by Power of Attorney</signatureName>
        <signatureDate>2020-11-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
