MMC Appoints Daniel S. Glaser as Chairman and Chief Executive of Marsh

Marsh & McLennan Companies, Inc. (MMC) today announced the
appointment of Daniel S. Glaser as Chairman and Chief Executive
Officer of Marsh Inc., MMC´s insurance broking subsidiary. Mr. Glaser
currently serves as Managing Director of AIG Europe (U.K.) Limited and
the Regional President of AIG´s American International Underwriters
(AIU), UK/Ireland division. He joins Marsh on December 10, 2007.

Mr. Glaser began his career in the insurance industry as a Marsh
broker in 1982. He worked at Marsh for a decade, serving in roles in
New York, London and Saudi Arabia. Thereafter, he spent eight years at
Willis, where he served as President and Chief Operating Officer of
Willis Risk Solutions, the large accounts practice. In 2000, he joined
AIG as President of the Global Energy Division and, in 2002, was named
Managing Director of AIG Europe (U.K.), AIU´s largest division.

"Dan has broad expertise in the insurance industry as well as
first-hand knowledge of the Marsh organization," said Michael G.
Cherkasky, MMC President and Chief Executive Officer. "His
perspectives as both a broker and an underwriter, coupled with his
extensive international experience, make him the ideal candidate to
take Marsh forward."

Mr. Glaser commented: "In returning to Marsh, I will come full
circle to the start of my career in the insurance industry 25 years
ago. During that time, I have seen the strength and resiliency of the
Marsh organization: it is a company with great people, the strongest
client base in the world and a bright future. There are challenges and
we must address them. There are also tremendous opportunities, and
with the support of thousands of Marsh employees, I intend to move
promptly to seize those opportunities."

Mr. Glaser currently lives in London and will relocate to MMC´s
corporate headquarters in New York. He will report to Mr. Cherkasky.

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 MMC.

MMC is a global professional services firm providing advice and
solutions in the areas of risk, strategy and human capital. It is the
parent company of a number of the world´s leading risk experts and
specialty consultants, including Marsh, the insurance broker and risk
advisor; 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. With more than 55,000 employees worldwide and annual
revenue of $11 billion, MMC provides analysis, advice and
transactional capabilities to clients in more than 100 countries. Its
stock (ticker symbol: MMC) is listed on the New York, Chicago, and
London stock exchanges. MMC´s website address is www.mmc.com.