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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>9999999995-09-003494.txt : 20091216
<SEC-HEADER>9999999995-09-003494.hdr.sgml : 20091216
<ACCEPTANCE-DATETIME>20091216001517
ACCESSION NUMBER:		9999999995-09-003494
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20091215
DATE AS OF CHANGE:		20091216
EFFECTIVENESS DATE:		20091215

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARSH & MCLENNAN COMPANIES, INC.
		CENTRAL INDEX KEY:			0000062709
		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
		IRS NUMBER:				362668272
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-163405
		FILM NUMBER:		091243134

	BUSINESS ADDRESS:	
		STREET 1:		1166 AVENUE OF THE AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		2123455000

	MAIL ADDRESS:	
		STREET 1:		1166 AVENUE OF THE AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MARSH & MCLENNAN COMPANIES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MARLENNAN CORP
		DATE OF NAME CHANGE:	19760505
</SEC-HEADER>
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<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
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    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2009-12-15</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>16:00:00</finalEffectivenessDispTime>
        <form>S-4</form>
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            <entityName>MARSH &amp; MCLENNAN COMPANIES, INC.</entityName>
            <fileNumber>333-163405</fileNumber>
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