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<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>UNITED STATES</FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>SECURITIES AND EXCHANGE COMMISSION</FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>Washington, D.C. 20549</FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><FONT size=3></FONT>&nbsp;</P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>_____________________</FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><FONT size=3></FONT>&nbsp;</P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>FORM 8-K</FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><FONT size=3></FONT>&nbsp;</P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>CURRENT REPORT</FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>Pursuant to Section 13 or 15(d) of the </FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><B><FONT size=3>Securities Exchange Act of 1934</FONT></B></P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><FONT size=3></FONT>&nbsp;</P>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left"><FONT size=3></FONT>&nbsp;</P>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=3>Date of report (Date of earliest event reported)</FONT></P></TD>
    <TD vAlign=top width=120>
      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><U><FONT size=3>August 12, 2005</FONT></U></P></TD></TR></TABLE>
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<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: center"><FONT size=3></FONT>&nbsp;</P>
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    <TD
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>Marsh &amp; McLennan Companies, Inc.</FONT></P></TD></TR>
  <TR>
    <TD
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>(Exact Name of Registrant as Specified in Charter)</FONT></P></TD></TR>
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    <TD width=1></TD>
    <TD width=534></TD></TR></TABLE>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>Delaware</FONT></P></TD>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>1-5998</FONT></P></TD>
    <TD
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>36-2668272</FONT></P></TD></TR>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>(State or Other Jurisdiction</FONT></P>
      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>of Incorporation)</FONT></P></TD>
    <TD
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>(Commission File Number)</FONT></P></TD>
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      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>(IRS Employer</FONT></P>
      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>Identification No.)</FONT></P></TD></TR></TABLE>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>1166 Avenue of the Americas, New York, NY</FONT></P></TD>
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      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>10036</FONT></P></TD></TR>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>(Address of Principal Executive Offices)</FONT></P></TD>
    <TD
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: center"><FONT size=3>(Zip Code)</FONT></P></TD></TR></TABLE>
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<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left"><FONT size=3></FONT>&nbsp;</P>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=3>Registrant's telephone number, including area code</FONT></P></TD>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><U><FONT size=3>(212) 345-5000</FONT></U></P></TD></TR></TABLE>
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<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left"><FONT size=3></FONT>&nbsp;</P>
<P
style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-INDENT: 0.5in; TEXT-ALIGN: left"><FONT size=3>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>
<P style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-ALIGN: left"><FONT size=3></FONT>&nbsp;</P>
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      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=4><B>&#144;</B></FONT></P></TD>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=3>Written communications pursuant to Rule 425 under the Securities
      Act (17 CFR 230.425)</FONT></P></TD></TR>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=4><B>&#144;</B></FONT></P></TD>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=3>Soliciting material pursuant to Rule 14a-12 under the Exchange Act
      (17 CFR 240.14a-12)</FONT></P></TD></TR>
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      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=4><B>&#144;</B></FONT></P></TD>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=3>Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))</FONT></P></TD></TR>
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      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=4><B>&#144;</B></FONT></P></TD>
    <TD vAlign=top>
      <P
      style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; TEXT-ALIGN: left"><FONT size=3>Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))</FONT></P></TD></TR></TABLE>

<P style="PAGE-BREAK-BEFORE: always"></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE="3"><B>ITEM 8.01. OTHER EVENTS</B> </FONT> </P>

         As disclosed in its Quarterly Report on Form 10-Q for the quarter ended June 30, 2005, Marsh &amp; McLennan Companies,
         Inc. instituted certain organizational changes that affected MMC's reportable segments, effective April 1, 2005.
         Accordingly, MMC has amended the description of its business, its management's discussion and analysis of financial
         condition and results of operations and its segment data and related disclosures contained in its audited consolidated
         financial statements at December 31, 2004 and 2003 and for each of the three years in the period ended December 31, 2004 to
         reflect this change.

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE="3"><B>ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS</B> </FONT> </P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE="3">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>(c) Exhibits</B> </FONT> </P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23.1 Consent of Deloitte &amp; Touche LLP. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99.1 Amended Item 1. Business of MMC's Annual Report on Form 10-K for the year ended
December 31, 2004. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99.2 Amended Item 7. Management's Discussion and Analysis of Financial Condition and
Results of Operations of MMC's Annual Report on Form 10-K for the year ended December 31, 2004. </FONT></P>

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<P><FONT FACE="Times New Roman, Times, Serif" SIZE=3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99.3
    Amended Item 8. Financial Statements and Supplementary data of MMC's Annual Report on Form 10-K for the year ended December 31, 2004.</FONT></P>

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<H1 ALIGN=CENTER><FONT FACE="Times New Roman, Times, Serif" SIZE=3>SIGNATURES</FONT></H1>

         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.
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<TABLE>
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     <TD WIDTH="400"></TD>
     <TD WIDTH="400"><B>Marsh &amp; McLennan Companies, Inc.</B><BR><BR>
<U>By: /s/ Sandra S. Wijnberg&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U><BR>
Senior Vice President<BR>
and Chief Financial Officer</TD>
     </TR>
</TABLE>

Date:  August 12, 2005
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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": "051026790"}, "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)
August 12, 2005
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:

Written communications pursuant to Rule 425 under the Securities
      Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act
      (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))
ITEM 8.01. OTHER EVENTS
As disclosed in its Quarterly Report on Form 10-Q for the quarter ended June 30, 2005, Marsh & McLennan Companies,
         Inc. instituted certain organizational changes that affected MMC's reportable segments, effective April 1, 2005.
         Accordingly, MMC has amended the description of its business, its management's discussion and analysis of financial
         condition and results of operations and its segment data and related disclosures contained in its audited consolidated
         financial statements at December 31, 2004 and 2003 and for each of the three years in the period ended December 31, 2004 to
         reflect this change.
ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS
(c) Exhibits
23.1 Consent of Deloitte & Touche LLP.
99.1 Amended Item 1. Business of MMC's Annual Report on Form 10-K for the year ended
December 31, 2004.
99.2 Amended Item 7. Management's Discussion and Analysis of Financial Condition and
Results of Operations of MMC's Annual Report on Form 10-K for the year ended December 31, 2004.
99.3
    Amended Item 8. Financial Statements and Supplementary data of MMC's Annual Report on Form 10-K for the year ended December 31, 2004.
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/ Sandra S. Wijnberg
Senior Vice President
and Chief Financial Officer
Date:  August 12, 2005