-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 vjqZNTKyn1icfIYldYof/g==

<SEC-DOCUMENT>0000793547-09-000014.txt : 20090810
<SEC-HEADER>0000793547-09-000014.hdr.sgml : 20090810
<ACCEPTANCE-DATETIME>20090810165655
ACCESSION NUMBER:		0000793547-09-000014
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090806
FILED AS OF DATE:		20090810
DATE AS OF CHANGE:		20090810

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NAVIGATORS GROUP INC
		CENTRAL INDEX KEY:			0000793547
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				133138397
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE PENN PLAZA
		STREET 2:		55TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10119
		BUSINESS PHONE:		2122442333

	MAIL ADDRESS:	
		STREET 1:		ONE PENN PLAZA 55TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10119

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GALANSKI STANLEY A
		CENTRAL INDEX KEY:			0001244460

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15886
		FILM NUMBER:		091000613

	MAIL ADDRESS:	
		STREET 1:		C/O THE NAVIGATORS GROUP, INC.
		STREET 2:		ONE PENN PLAZA
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10119
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-08-06</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000793547</issuerCik>
        <issuerName>NAVIGATORS GROUP INC</issuerName>
        <issuerTradingSymbol>Navg</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001244460</rptOwnerCik>
            <rptOwnerName>GALANSKI STANLEY A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O THE NAVIGATORS GROUP, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>ONE PENN PLAZA</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10119</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-08-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>111226</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These shares vest in three equal installments on August 6, 2012, August 6, 2013 and August 6, 2014, subject to the Reporting Person's continued employment and the Issuer's financial performance.  The number of shares that vest on such dates may increase or decrease based on such performance.  Until such installments vest, the Reporting Person does not have voting or dispositive control over these shares.</footnote>
        <footnote id="F2">Excludes nonvested shares of restricted stock.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Stanley A. Galanski</signatureName>
        <signatureDate>2009-08-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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