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		<title>Form 8-K 09-20-2012</title>
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<a name="s7B663635B2203ECE6A78E49363C6BE40"></a><div><div style="line-height:120%;padding-bottom:13px;padding-top:13px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><br><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">UNITED STATES</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">Washington, D.C.  20549</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">_____________________</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:14pt;"><font style="font-family:Arial;font-size:14pt;font-weight:bold;">FORM 8-K</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">CURRENT REPORT</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">Pursuant to Section 13 or 15(d) of the </font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">Securities Exchange Act of 1934</font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:92.3828125%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td width="58%"></td><td width="42%"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Date of report (Date of earliest event reported)</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">September 20, 2012</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:16pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:92.3828125%;border-collapse:collapse;text-align:left;"><tr><td colspan="1"></td></tr><tr><td width="100%"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:16pt;"><font style="font-family:Arial;font-size:16pt;font-weight:bold;">Marsh &amp; McLennan Companies, Inc.</font></div></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">(Exact Name of Registrant as Specified in Charter)</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:92.1875%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="31%"></td><td width="38%"></td><td width="31%"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Delaware</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">1-5998</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">36-2668272</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">(State or Other Jurisdiction of Incorporation)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">(Commission File Number)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">(IRS Employer</font></div><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Identification No.)</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:92.1875%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td width="51%"></td><td width="49%"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">1166 Avenue of the Americas, New York, NY</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">10036</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">(Address of Principal Executive Offices)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;"><div style="text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">(Zip Code)</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:92.3828125%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td width="58%"></td><td width="42%"></td></tr><tr><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Registrant's telephone number, including area code</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">(212) 345-5000</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">&#32;&#32;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></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="padding-bottom:4px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:60px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:174%;font-size:11pt;padding-left:36px;"><font style="font-family:Arial;font-size:11pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:174%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-bottom:4px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:60px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:174%;font-size:11pt;padding-left:36px;"><font style="font-family:Arial;font-size:11pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:174%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="padding-bottom:4px;font-family:Times New Roman; font-size:10pt;"><tr><td style="width:60px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:174%;font-size:11pt;padding-left:36px;"><font style="font-family:Arial;font-size:11pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:174%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:60px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:174%;font-size:11pt;padding-left:36px;"><font style="font-family:Arial;font-size:11pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:174%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></div></td></tr></table><div style="line-height:174%;text-align:left;padding-left:60px;text-indent:-24px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><br><div></div><hr style="page-break-after:always"><a name="s597F917F31C78ABED42EE49363E526DC"></a><br><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">Item 5.02&#160;&#160;&#160;&#160;Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;padding-bottom:12px;padding-top:4px;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">On September 20, 2012, Marsh &amp; McLennan Companies, Inc. (the &#8220;Company&#8221;) announced that Brian Duperreault, 65, will retire as the Company&#8217;s President and Chief Executive Officer at year end.  Mr. Duperreault will also retire from the Company&#8217;s Board of Directors (the &#8220;Board&#8221;) concurrent with his retirement from the Company.  </font></div><div style="line-height:120%;padding-bottom:12px;padding-top:4px;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Daniel S. Glaser, 52, currently the Company's Group President and Chief Operating Officer, has been named Mr. Duperreault's successor and will become President and Chief Executive Officer effective January 1, 2013.  In addition, Mr. Glaser will become a director of the Company effective January 1, 2013.  Upon joining the Board, Mr. Glaser will serve as a member of the Board&#8217;s Executive and Finance Committees.  </font></div><div style="line-height:120%;padding-bottom:12px;padding-top:4px;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Mr. Glaser has served as Group President and Chief Operating Officer of the Company since April 2011, with operational and strategic oversight of both the Risk and Insurance and the Consulting segments of the Company.  Prior to his current role, Mr. Glaser served as Chairman and Chief Executive Officer of Marsh Inc., a wholly-owned subsidiary of the Company.  He rejoined Marsh in December 2007, after serving in senior positions in commercial insurance and insurance brokerage in the United States, Europe, and the Middle East.  Prior to Marsh, he was managing director of AIG Europe (UK) Limited, a Senior Vice President of AIG, Inc., and the Chairman of AIU's strategic advisory group.  He began his career at Marsh 30 years ago.  </font></div><div style="line-height:120%;padding-bottom:12px;padding-top:4px;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Mr. Glaser is a former Chairman of BritishAmerican Business and serves on its International Advisory Board.  He is a member of the Board of Trustees of the American Institute for Chartered Property Casualty Underwriters and the Board of Trustees of Ohio Wesleyan University.  </font></div><div style="line-height:120%;padding-bottom:12px;padding-top:4px;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">The Company's related press release is filed as Exhibit 99.1 hereto and incorporated herein by reference.</font></div><div style="line-height:120%;padding-bottom:12px;padding-top:6px;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">Item 9.01&#160;&#160;&#160;&#160;Financial Statements and Exhibits</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">(d)&#160;&#160;&#160;&#160;Exhibits</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">99.1&#160;&#160;&#160;&#160;Press release issued by Marsh &amp; McLennan Companies, Inc. on September 20, 2012.</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:9pt;"><font style="font-family:Arial;font-size:9pt;">2</font></div><div style="line-height:120%;padding-bottom:13px;padding-top:13px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><a name="s597F917F31C78ABED42EE49363E526DC"></a><br><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">SIGNATURES</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">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></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:100%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:88.671875%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td width="49%"></td><td width="10%"></td><td width="41%"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">MARSH &amp; McLENNAN COMPANIES, INC.</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;height:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">By:</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;text-decoration:underline;">/s/ Luciana Fato                 </font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Name:</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Luciana Fato</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Title:</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Deputy General Counsel &amp;</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Corporate Secretary</font></div></td></tr></table></div></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Date:&#160;&#160;&#160;&#160;September 20, 2012</font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:9pt;"><font style="font-family:Arial;font-size:9pt;">3</font></div><div style="line-height:120%;padding-bottom:13px;padding-top:13px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><hr style="page-break-after:always"><a name="s597F917F31C78ABED42EE49363E526DC"></a><br><div style="line-height:120%;text-align:center;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">EXHIBIT INDEX</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;text-decoration:underline;">Exhibit No.</font><font style="font-family:Arial;font-size:11pt;">&#160;&#160;&#160;&#160;   </font><font style="font-family:Arial;font-size:11pt;text-decoration:underline;">Exhibit</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:100%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:98.828125%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td width="15%"></td><td width="85%"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">99.1</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;">Press release issued by Marsh &amp; McLennan Companies, Inc. on September 20, 2012.</font></div></td></tr></table></div></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><br><div><div style="line-height:120%;text-align:center;font-size:9pt;"><font style="font-family:Arial;font-size:9pt;">4</font></div><div style="line-height:120%;padding-bottom:13px;padding-top:13px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div>	</body>
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Form 8-K 09-20-2012
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)
September 20, 2012
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 5.02    Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers
On September 20, 2012, Marsh & McLennan Companies, Inc. (the "Company") announced that Brian Duperreault, 65, will retire as the Company's President and Chief Executive Officer at year end.  Mr. Duperreault will also retire from the Company's Board of Directors (the "Board") concurrent with his retirement from the Company.
Daniel S. Glaser, 52, currently the Company's Group President and Chief Operating Officer, has been named Mr. Duperreault's successor and will become President and Chief Executive Officer effective January 1, 2013.  In addition, Mr. Glaser will become a director of the Company effective January 1, 2013.  Upon joining the Board, Mr. Glaser will serve as a member of the Board's Executive and Finance Committees.
Mr. Glaser has served as Group President and Chief Operating Officer of the Company since April 2011, with operational and strategic oversight of both the Risk and Insurance and the Consulting segments of the Company.  Prior to his current role, Mr. Glaser served as Chairman and Chief Executive Officer of Marsh Inc., a wholly-owned subsidiary of the Company.  He rejoined Marsh in December 2007, after serving in senior positions in commercial insurance and insurance brokerage in the United States, Europe, and the Middle East.  Prior to Marsh, he was managing director of AIG Europe (UK) Limited, a Senior Vice President of AIG, Inc., and the Chairman of AIU's strategic advisory group.  He began his career at Marsh 30 years ago.
Mr. Glaser is a former Chairman of BritishAmerican Business and serves on its International Advisory Board.  He is a member of the Board of Trustees of the American Institute for Chartered Property Casualty Underwriters and the Board of Trustees of Ohio Wesleyan University.
The Company's related press release is filed as Exhibit 99.1 hereto and incorporated herein by reference.
Item 9.01    Financial Statements and Exhibits
(d)    Exhibits
99.1    Press release issued by Marsh & McLennan Companies, Inc. on September 20, 2012.
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:    September 20, 2012
3
EXHIBIT INDEX
Exhibit No.
Exhibit
99.1
Press release issued by Marsh & McLennan Companies, Inc. on September 20, 2012.
4