NEW YORK, January 3, 2008 — Marsh, the world's leading insurance broker and risk advisor, today announced changes to its global organizational structure as well as several senior management appointments.

"Simplifying the current structure will enable Marsh to reduce complexity and improve efficiencies within the organization," said Daniel S. Glaser, chief executive officer of Marsh, who joined the firm last month.

Key components of the reorganization are:

• Marsh's global insurance broking business will be consolidated into two geographic divisions: U.S./Canada and International. As part of this combination, Marsh also announced today that Joseph M. McSweeny, most recently of Willis Group Holdings, has joined Marsh and will serve as President of the U.S./Canada Division.
• Alexander Moczarski, currently chief executive officer of the Europe, Middle East and Africa (EMEA) region, has been named President of the International Division. He will relocate to New York from London.
• Alexander W. (Sandy) Vietor, who joined Marsh in December, will serve as president of Marsh's Global Specialties.
• Timothy J. Mahoney will lead the enhanced Global Risk Management (GRM) unit, into which the industry practices will now report.
• Henry S. Allen continues to lead the Global Consumer Division as president.

Marsh, the world's leading insurance broker and risk advisor, has 26,000 employees and provides advice and transactional capabilities to clients in over 100 countries. Marsh is a unit of Marsh & McLennan Companies (MMC), a global professional services firm with more than 54,000 employees and approximately $11 billion of annual revenues. MMC also is the parent company of Guy Carpenter, the risk and reinsurance specialist; Kroll, the risk consulting firm; Mercer, the provider of HR and related financial advice and services; and Oliver Wyman, the management consultancy. MMC's stock (ticker symbol: MMC) is listed on the New York, Chicago and London stock exchanges. MMC's Web Site is www.mmc.com.

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Biographical Notes:

Joseph McSweeny is an insurance industry veteran with more than three decades of experience. He worked at Marsh for more than 18 years (1976-1994) and led the global Utility Industry Practice. His most recent position in the industry was with Willis Group Holdings, where he was Chairman of Willis Risk Solutions, the major accounts practice in North America, from 2001 to 2004. Previously, he served as Chief Executive of Willis International Holdings in London. Mr. McSweeny has also served as an Adjunct Professor in the Business Division at St. Thomas Aquinas College in Sparkill, N.Y. since 2005.

Sandy Vietor also began his career at Marsh, where he served in various capacities for more than 16 years including as head of Marine & Energy. Most recently, he was Executive Vice President of Aon Risk Services Americas. Prior to that, Sandy was Executive Vice President of Willis North America. He joined Willis in 1991 as President and CEO of Willis’ North America Energy operations and was named Chairman of Willis Global Energy in 1995.

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Christine Walton
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