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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001362206-08-000014.txt : 20080527
<SEC-HEADER>0001362206-08-000014.hdr.sgml : 20080526
<ACCEPTANCE-DATETIME>20080527112526
ACCESSION NUMBER:		0001362206-08-000014
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080522
FILED AS OF DATE:		20080527
DATE AS OF CHANGE:		20080527

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GEVITY HR INC
		CENTRAL INDEX KEY:			0001035185
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT SERVICES [8741]
		IRS NUMBER:				650735612
		STATE OF INCORPORATION:			FL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		9000 TOWN CENTER PARKWAY
		CITY:			BRADENTON
		STATE:			FL
		ZIP:			34202
		BUSINESS PHONE:		9417414300

	MAIL ADDRESS:	
		STREET 1:		9000 TOWN CENTER PARKWAY
		CITY:			BRADENTON
		STATE:			FL
		ZIP:			34202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STAFF LEASING INC
		DATE OF NAME CHANGE:	19970306

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Welsh Garry
		CENTRAL INDEX KEY:			0001408905

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22701
		FILM NUMBER:		08859827

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		941.741.4603

	MAIL ADDRESS:	
		STREET 1:		9000 TOWN CENTER PARKWAY
		CITY:			BRADENTON
		STATE:			FL
		ZIP:			34202
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001035185</issuerCik>
        <issuerName>GEVITY HR INC</issuerName>
        <issuerTradingSymbol>gvhr</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001408905</rptOwnerCik>
            <rptOwnerName>Welsh Garry</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9000 TOWN CENTER PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BRADENTON</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>34202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP &amp; CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>67000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>82000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">21,000 shares vest in equal installments over three years beginning May 22, 2009. 46,000 shares vest in installments of 11,000, 11,000, 11,000, and 13,000 if the price of Gevity HR, Inc. common stock achieves certain thresholds during December 2008, December 2009, December 2010 and December 2011, respectively.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Edwin E. Hightower, Jr., Attorney-in-Fact</signatureName>
        <signatureDate>2008-05-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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