-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UmuxZicKIvS2QjeRnMbMOpKeV/+6hkmDtiamGuiCnlNfljMhBXS4uoL7naZ7zVBZ
 JoDSlsNKJThE3+se2ZesUg==

<SEC-DOCUMENT>0000797468-08-000095.txt : 20080715
<SEC-HEADER>0000797468-08-000095.hdr.sgml : 20080715
<ACCEPTANCE-DATETIME>20080715173906
ACCESSION NUMBER:		0000797468-08-000095
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080715
FILED AS OF DATE:		20080715
DATE AS OF CHANGE:		20080715

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OCCIDENTAL PETROLEUM CORP /DE/
		CENTRAL INDEX KEY:			0000797468
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				954035997
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10889 WILSHIRE BLVD
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90024
		BUSINESS PHONE:		3102088800

	MAIL ADDRESS:	
		STREET 1:		10889 WILSHIRE BOULEVARD
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90024

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Leonard Jim A
		CENTRAL INDEX KEY:			0001327220

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09210
		FILM NUMBER:		08953830

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(310) 443-6765

	MAIL ADDRESS:	
		STREET 1:		10889 WILSHIRE BOULEVARD
		CITY:			LOS ANGELES
		STATE:			CA
		ZIP:			90024
</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>2008-07-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000797468</issuerCik>
        <issuerName>OCCIDENTAL PETROLEUM CORP /DE/</issuerName>
        <issuerTradingSymbol>OXY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001327220</rptOwnerCik>
            <rptOwnerName>Leonard Jim A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10889 WILSHIRE BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90024</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President &amp; Controller</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-07-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1983</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>84.05</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22768</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>/s/ CHRISTEL H. PAULI, Attorney-in-fact for Jim A. Leonard</signatureName>
        <signatureDate>2008-07-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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