<SEC-DOCUMENT>0001021465-16-000019.txt : 20160216
<SEC-HEADER>0001021465-16-000019.hdr.sgml : 20160215
<ACCEPTANCE-DATETIME>20160216195359
ACCESSION NUMBER:		0001021465-16-000019
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20160211
FILED AS OF DATE:		20160216
DATE AS OF CHANGE:		20160216

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ON ASSIGNMENT INC
		CENTRAL INDEX KEY:			0000890564
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-HELP SUPPLY SERVICES [7363]
		IRS NUMBER:				954023433
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		26745 MALIBU HILLS ROAD
		CITY:			CALABASAS
		STATE:			CA
		ZIP:			91301
		BUSINESS PHONE:		8188787900

	MAIL ADDRESS:	
		STREET 1:		26745 MALIBU HILLS ROAD
		CITY:			CALABASAS
		STATE:			CA
		ZIP:			91301

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PIERCE EDWARD L
		CENTRAL INDEX KEY:			0001021465

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35636
		FILM NUMBER:		161431195

	MAIL ADDRESS:	
		STREET 1:		1119 VAUGHN CREST DRIVE
		CITY:			FRANKLIN
		STATE:			TN
		ZIP:			37069
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Non-Qualified Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>16.51</value>
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            <exerciseDate>
                <value>2012-09-01</value>
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            <expirationDate>
                <value>2022-09-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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    <footnotes>
        <footnote id="F1">The acquired shares vested upon certification of a performance target on February 11, 2016, for a performance award previously granted to the executive officer.</footnote>
        <footnote id="F2">Executive officer elected to satisfy tax withholding obligations upon vesting by having the issuer withhold a number of vested shares equal to that of the executive officer's tax liability.</footnote>
        <footnote id="F3">On February 11, 2016 performance targets were achieved for an RSU grant that was previously made to the executive officer. 50% of these RSUs will vest on January 2, 2017 and the remaining will vest on January 2, 2018, subject to the executive officer's continued service to the Company.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: James L. Brill, CAO For: Edward L. Pierce</signatureName>
        <signatureDate>2016-02-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
