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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>
<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>
<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font FACE="ARIAL" size=2>UNITED STATES</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font FACE="ARIAL" size=2>SECURITIES AND EXCHANGE COMMISSION</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font face="Arial" size=2>Washington, D.C. 20549</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font face="Arial" size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font face="Arial" size=2>_____________________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font face="Arial" size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font FACE="ARIAL" size=2>FORM 8-K</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font face="Arial" size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font FACE="ARIAL" size=2>CURRENT REPORT</font></B></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font face="Arial" size=2>Pursuant to Section 13 or 15(d) of the </font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font face="Arial" size=2>Securities Exchange Act of 1934</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font face="Arial" size=2>&nbsp;</font></p>

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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Date of report (Date of earliest event reported)</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><u><font face="Arial" size=2>October 8, 2009</font></u></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Marsh &amp; McLennan Companies, Inc.</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>(Exact Name of Registrant as Specified in Charter)</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Delaware</font></p> </td>
        <td width="208" valign=top style='border-bottom:solid black 1.0pt; padding:0pt 5.4pt 0pt 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>1-5998</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>36-2668272</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>(State or Other Jurisdiction of Incorporation)</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>(Commission File Number)</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>(IRS Employer</font><br> <font face="Arial" size=2>Identification No.)</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>1166 Avenue of the Americas, New York, NY</font> <font size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </font><font face="Arial" size=2>10036</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>(Address of Principal Executive Offices)</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>(Zip Code)</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Registrant&#146;s telephone number, including area code</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><u><font face="Arial" size=2>(212) 345-5000</font></u></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.52in;text-align:left;'><font face="Arial" size=2>Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</font></p>

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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:125.28%'><font face=Wingdings>o</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:125.28%'><font face="Arial" size=2>Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:125.28%'><font face="Arial" size=2>Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:125.28%'><font face=Wingdings>o</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:125.28%'><font face="Arial" size=2>Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:125.28%'><font face=Wingdings>o</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt;line-height:125.28%'><font face="Arial" size=2>Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font face="Arial" size=2>Item 8.01</font></b></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font face="Arial" size=2>Other Events</font></b></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.44in;text-align:left;'><font face="Arial" size=2>The following documents are filed with reference to the Registration Statement (No. 333-155571) on Form S-4 (the &#147;Registration Statement&#148;), filed by Marsh &amp; McLennan Companies, Inc. with the Securities and Exchange Commission on November 21, 2008, as amended on December 5, 2008. Such documents are filed in connection with the issuance of shares under the Registration Statement pursuant to a Share Purchase Agreement dated as of October 3, 2009.</font></p>

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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font face="Arial" size=2>Financial Statements and Exhibits</font></b></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font face="Arial" size=2>&nbsp;Exhibits</font></b></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>5.1</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Opinion of the Deputy General Counsel of Marsh &amp; McLennan Companies, Inc.</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Consent of the Deputy General Counsel of Marsh &amp; McLennan Companies, Inc.<BR> (contained in Exhibit 5.1).</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font FACE="ARIAL" size=2>SIGNATURES</font></B></p>

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<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.52in;text-align:left;'><font face="Arial" size=2>Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</font></p>

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<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:2.25in; text-indent:0.5in;text-align:left;'><font face="Arial" size=2>&nbsp;&nbsp;&nbsp;&nbsp;MARSH &amp; McLENNAN COMPANIES, INC.</font></p>

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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>/s/ Luciana Fato</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Name:</font></p> </td>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>&nbsp;&nbsp;&nbsp;Luciana Fato</font></p> </td> </tr></table>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deputy General Counsel &amp;</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt; margin-left:3.62in;text-align:left;'><font face="Arial" size=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Corporate Secretary</font></p>

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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>October 8, 2009</font></p> </td> </tr></table>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><B><font FACE="ARIAL" size=2>EXHIBIT INDEX</font></B></p>

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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>5.1</font></p> </td>
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            <p style='margin-left:35.15pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Opinion of the Deputy General Counsel of Marsh &amp; McLennan Companies, Inc.</font></p> </td> </tr></table>
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            <p style='margin-left:35.95pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font face="Arial" size=2>Consent of the Deputy General Counsel of Marsh &amp; McLennan Companies, Inc. (contained in Exhibit 5.1).</font></p> </td> </tr></table>
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{"company-data": {"conformed-name": "MARSH & MCLENNAN COMPANIES, INC.", "cik": "0000062709", "assigned-sic": "6411", "irs-number": "362668272", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-05998", "film-number": "091112453"}, "business-address": {"street1": "1166 AVENUE OF THE AMERICAS", "city": "NEW YORK", "state": "NY", "zip": "10036", "phone": "2123455000"}, "mail-address": {"street1": "1166 AVENUE OF THE AMERICAS", "city": "NEW YORK", "state": "NY", "zip": "10036"}, "former-company": [{"former-conformed-name": "MARSH & MCLENNAN COMPANIES INC", "date-changed": "19920703"}, {"former-conformed-name": "MARLENNAN CORP", "date-changed": "19760505"}]}
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_____________________
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of report (Date of earliest event reported)
October 8, 2009
Marsh & McLennan Companies, Inc.
(Exact Name of Registrant as Specified in Charter)
Delaware
1-5998
36-2668272
(State or Other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer
Identification No.)
1166 Avenue of the Americas, New York, NY
10036
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code
(212) 345-5000
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 8.01
Other Events
The following documents are filed with reference to the Registration Statement (No. 333-155571) on Form S-4 (the "Registration Statement"), filed by Marsh & McLennan Companies, Inc. with the Securities and Exchange Commission on November 21, 2008, as amended on December 5, 2008. Such documents are filed in connection with the issuance of shares under the Registration Statement pursuant to a Share Purchase Agreement dated as of October 3, 2009.
Item 9.01
Financial Statements and Exhibits
(d)
Exhibits
5.1
Opinion of the Deputy General Counsel of Marsh & McLennan Companies, Inc.
23.1
Consent of the Deputy General Counsel of Marsh & McLennan Companies, Inc.
(contained in Exhibit 5.1).
2
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
MARSH & McLENNAN COMPANIES, INC.
By:
/s/ Luciana Fato
Name:
Luciana Fato
Title:
Deputy General Counsel &
Corporate Secretary
Date:
October 8, 2009
3
EXHIBIT INDEX
Exhibit No.
Exhibit
5.1
Opinion of the Deputy General Counsel of Marsh & McLennan Companies, Inc.
23.1
Consent of the Deputy General Counsel of Marsh & McLennan Companies, Inc. (contained in Exhibit 5.1).
4