-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 LH7Og3LVjwHAKKMGxgttKGDridZLgCMqw0QhZ5LEYMihToH4a5XHYARaOLFD+Kvu
 nZly/iraERXdOODwhpp1ag==

<SEC-DOCUMENT>0000356130-03-000033.txt : 20030509
<SEC-HEADER>0000356130-03-000033.hdr.sgml : 20030509
<ACCEPTANCE-DATETIME>20030509162345
ACCESSION NUMBER:		0000356130-03-000033
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030507
FILED AS OF DATE:		20030509

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			EMPLOYERS MUTUAL CASUALTY CO
		CENTRAL INDEX KEY:			0001199871

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-10956
		FILM NUMBER:		03690643

	BUSINESS ADDRESS:	
		STREET 1:		P O BOX 712
		CITY:			DES MOINES
		STATE:			IA
		ZIP:			50303-0712
		BUSINESS PHONE:		5152802658

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EMC INSURANCE GROUP INC
		CENTRAL INDEX KEY:			0000356130
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				426234555
		STATE OF INCORPORATION:			IA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		717 MULBERRY ST
		CITY:			DES MOINES
		STATE:			IA
		ZIP:			50309
		BUSINESS PHONE:		5152802902

	MAIL ADDRESS:	
		STREET 1:		717 MULBERRY STREET
		CITY:			DES MOINES
		STATE:			IA
		ZIP:			50309
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>

<ownershipDocument>

    <documentType>4</documentType>

    <periodOfReport>2003-05-07</periodOfReport>


    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000356130</issuerCik>
        <issuerName>EMC INSURANCE GROUP INC</issuerName>
        <issuerTradingSymbol>emci</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001199871</rptOwnerCik>
            <rptOwnerName>EMPLOYERS MUTUAL CASUALTY CO</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>Parent co &amp; Majority stkhldr</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>EMC Insurance Group Inc. - Common Stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-05-07</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>P</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>800</value>
            </transactionShares>
            <transactionValue>
                <value>18.98</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>9169273</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>

    <nonDerivativeSecurity>
        <securityTitle>
            <value>EMC Insurance Group Inc. - Common Stock</value>
        </securityTitle>
        <transactionDate>
            <value>2003-05-08</value>
        </transactionDate>
        <transactionCoding>
            <transactionFormType>4</transactionFormType>
            <transactionCode>P</transactionCode>
            <equitySwapInvolved>0</equitySwapInvolved>
        </transactionCoding>
        <transactionTimeliness>
            <value></value>
        </transactionTimeliness>
        <transactionAmounts>
            <transactionShares>
                <value>5000</value>
            </transactionShares>
            <transactionValue>
                <value>18.39</value>
            </transactionValue>
            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>
            <sharesOwnedFollowingTransaction>
                <value>9174273</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>
            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
    </nonDerivativeSecurity>


    <ownerSignature>
        <signatureName>Robert L. Link</signatureName>
        <signatureDate>2003-05-09</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----