<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2016-12-08</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001271024</issuerCik>
        <issuerName>LINKEDIN CORP</issuerName>
        <issuerTradingSymbol>LNKD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001372397</rptOwnerCik>
            <rptOwnerName>Sordello Steven J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LINKEDIN CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>1000 WEST MAUDE AVENUE</rptOwnerStreet2>
            <rptOwnerCity>SUNNYVALE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94085</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
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            <deemedExecutionDate></deemedExecutionDate>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                <value></value>
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                <directOrIndirectOwnership>
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                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
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                </natureOfOwnership>
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        </nonDerivativeTransaction>
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                <transactionPricePerShare>
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                <underlyingSecurityTitle>
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            </underlyingSecurity>
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                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F4"/>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (Right to Buy)</value>
            </securityTitle>
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                <value>170.46</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2016-12-08</value>
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            <exerciseDate>
                <value>2014-01-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2023-03-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
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            <securityTitle>
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            <transactionDate>
                <value>2016-12-08</value>
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            <transactionTimeliness>
                <value></value>
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                <transactionShares>
                    <value>17676</value>
                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2014-02-28</value>
            </exerciseDate>
            <expirationDate>
                <value>2024-02-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>17676</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (Right to Buy)</value>
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                <value>267.20</value>
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            <transactionDate>
                <value>2016-12-08</value>
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                <value></value>
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                <transactionShares>
                    <value>15018</value>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
                <value>2015-03-01</value>
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            <expirationDate>
                <value>2025-03-01</value>
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    <footnotes>
        <footnote id="F1">Pursuant to the Agreement and Plan of Merger, dated June 11, 2016, between the Issuer, Microsoft Corporation and Liberty Merger Sub Inc. (the &quot;Merger Agreement&quot;), unvested restricted stock units (&quot;RSUs&quot;) were substituted with RSUs for a number of shares of Microsoft Corporation common stock equal to 52,979 multiplied by a fraction, the numerator of which is the Merger Consideration (as defined below), and the denominator of which is the volume weighted average price per share of Microsoft Corporation common stock on Nasdaq for the five consecutive trading days ending with December 7, 2016 (the &quot;Ratio&quot;), rounded down to the nearest whole share, vesting on the same terms.</footnote>
        <footnote id="F2">The shares of Class A Common Stock were cancelled pursuant to the Merger Agreement in exchange for a cash payment of $196 per share (the &quot;Merger Consideration&quot;).</footnote>
        <footnote id="F3">Disposed of pursuant to the Merger Agreement, in exchange for the Merger Consideration.</footnote>
        <footnote id="F4">Shares held directly by the Steven &amp; Susan Sordello Revocable Trust dtd 9/19/03 for which the Reporting Person serves as a trustee.</footnote>
        <footnote id="F5">The shares of Class B Common Stock were cancelled pursuant to the Merger Agreement in exchange for the Merger Consideration and had no expiration date.</footnote>
        <footnote id="F6">The stock option was granted on March 1, 2013 for 60,790 shares (the &quot;Issuer Stock Option&quot;).  44,325 vested shares subject to the Issuer Stock Option were cancelled pursuant to the Merger Agreement, in exchange for a cash payment equal to (x) the difference between the Merger Consideration and the per share exercise price of the Issuer Stock Option (the &quot;Exercise Price&quot;), multiplied by (y) the number of disposed vested Issuer Stock Option shares. 16,465 unvested shares subject to the Issuer Stock Option were substituted by Microsoft Corporation with an option to purchase a number of shares of Microsoft Corporation common stock equal to 16,465 multiplied by the Ratio, and a per share exercise price equal to the Exercise Price divided by the Ratio, rounded up to the nearest whole cent, vesting on the same terms.</footnote>
        <footnote id="F7">The stock option was cancelled pursuant to the Merger Agreement, whereby the per share exercise price of the stock option is equal to or greater than the Merger Consideration.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Lora D. Blum, Attorney-In-Fact</signatureName>
        <signatureDate>2016-12-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
