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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 AFoIALNBOV3/rFGggFXwwxpb7DY2WblSIrlNFlrCKBW51kV0aurgiq/7WQORTUuf
 5k+L8npZxpbFTxNoA8nFxg==

<SEC-DOCUMENT>0001171766-03-000001.txt : 20030623
<SEC-HEADER>0001171766-03-000001.hdr.sgml : 20030623
<ACCEPTANCE-DATETIME>20030623141454
ACCESSION NUMBER:		0001171766-03-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030620
FILED AS OF DATE:		20030623

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RLI CORP
		CENTRAL INDEX KEY:			0000084246
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				370889946
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		9025 N LINDBERGH DR
		CITY:			PEORIA
		STATE:			IL
		ZIP:			61615
		BUSINESS PHONE:		3096921000

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MCPHEETERS F LYNN
		CENTRAL INDEX KEY:			0001171766

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09463
		FILM NUMBER:		03753097

	BUSINESS ADDRESS:	
		STREET 1:		100 NE ADAMS STREET
		CITY:			PEORIA
		STATE:			IL
		ZIP:			61629
		BUSINESS PHONE:		3096754610

	MAIL ADDRESS:	
		STREET 1:		100 NE ADAMS STREET
		CITY:			PEORIA
		STATE:			IL
		ZIP:			61629
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>c0001171766d20030623f4f.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<ownershipDocument><schemaVersion>X0101</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-06-20</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000084246</issuerCik><issuerName>RLI CORP</issuerName>        <issuerTradingSymbol>RLI</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001171766</rptOwnerCik><rptOwnerName>MCPHEETERS F LYNN</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>  </rptOwnerStreet1><rptOwnerStreet2>  </rptOwnerStreet2><rptOwnerCity>  </rptOwnerCity><rptOwnerState>  </rptOwnerState><rptOwnerZipCode>  </rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle></officerTitle><otherText></otherText></reportingOwnerRelationship></reportingOwner><nonDerivativeSecurity><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-06
- -20</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1"/></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>259.8279</value></transactionShares><transactionValue><value>31.8962</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>4690.7007</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By Directors Trust</value></natureOfOwnership></ownershipNature></nonDerivativeSecurity><footnotes><footnote id="F1">The securities herein were allocated to my account pursuant to the RLI Corp. Directors' Irrevocable Trust Agreement.</footnote></footn
otes><ownerSignature><signatureName>/s/ F. Lynn McPheeters</signatureName><signatureDate>2003-06-23</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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