-----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,
 KPKnedDVz2CK8BSCuhy19xn7ls7yCRmcZFkIt4dKuWM1+WyllG3lb9vFEeVFtijl
 f1wycYlDFa1j5dUAncjtyA==

<SEC-DOCUMENT>0001228055-06-000001.txt : 20060718
<SEC-HEADER>0001228055-06-000001.hdr.sgml : 20060718
<ACCEPTANCE-DATETIME>20060718124601
ACCESSION NUMBER:		0001228055-06-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060701
FILED AS OF DATE:		20060718
DATE AS OF CHANGE:		20060718

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HIGH YIELD PLUS FUND INC
		CENTRAL INDEX KEY:			0000828990
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				133459204
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		GATEWAY CENTER THREE, 4TH FLOOR
		STREET 2:		100 MULBERRY STREET
		CITY:			NEWARK
		STATE:			NJ
		ZIP:			07102
		BUSINESS PHONE:		973-802-6469

	MAIL ADDRESS:	
		STREET 1:		GATEWAY CENTER THREE, 4TH FLOOR
		STREET 2:		100 MULBERRY STREET
		CITY:			NEWARK
		STATE:			NJ
		ZIP:			07102

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KAPLAN PAUL D
		CENTRAL INDEX KEY:			0001228055

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-05468
		FILM NUMBER:		06966660

	BUSINESS ADDRESS:	
		STREET 1:		WELLINGTON MANAGEMENT CO. LLP
		STREET 2:		75 STATE STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
		BUSINESS PHONE:		617-790-7163

	MAIL ADDRESS:	
		STREET 1:		WELLINGTON MANAGEMENT COMPANY, LLP
		STREET 2:		75 STATE STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-07-01</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000828990</issuerCik>
        <issuerName>HIGH YIELD PLUS FUND INC</issuerName>
        <issuerTradingSymbol>HYP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001228055</rptOwnerCik>
            <rptOwnerName>KAPLAN PAUL D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>WELLINGTON MANAGEMENT COMPANY, LLP</rptOwnerStreet1>
            <rptOwnerStreet2>75 STATE STREET</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Officer of Investment Adviser</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>Mr. Kaplan ceased to be an insider of the Issuer effective July 1, 2006.</remarks>

    <ownerSignature>
        <signatureName>John E. Bruno, Attorney-in-fact</signatureName>
        <signatureDate>2006-07-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----