POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Lewis Bernard
                           ----------------
                           Lewis W. Bernard






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Mathis Cabiallavetta
                           ------------------------
                           Mathis Cabiallavetta






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Peter Coster
                           ----------------
                           Peter Coster






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                              /s/ Charles A. Davis
                              ---------------------
                              Charles A. Davis






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                              /s/ Robert F. Erburu
                              --------------------
                              Robert F. Erburu






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Oscar Fanjul
                           ----------------
                           Oscar Fanjul






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Jeffrey W. Greenberg
                           -----------------------------------
                           Jeffrey W. Greenberg






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Ray J. Groves
                           -----------------------------------
                           Ray J. Groves






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                             /s/ Stephen R. Hardis
                             ----------------------
                              Stephen R. Hardis






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Gwendolyn S. King
                           -----------------------------------
                           Gwendolyn S. King






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ The Rt. Hon. Lord Lang of Monkton, DL
                           -----------------------------------------------------
                           The Rt. Hon. Lord Lang of Monkton, DL





                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                             /s/ Lawrence J. Lasser
                             -----------------------
                            Lawrence J. Lasser






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                               /s/ David A. Olsen
                               -------------------
                               David A. Olsen






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ Adele Simmons
                           -----------------
                           Adele Simmons






                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                              /s/ John T. Sinnott
                              ---------------------
                              John T. Sinnott





                                POWER OF ATTORNEY

         The undersigned, a Director and/or Officer of Marsh & McLennan
Companies, Inc., a Delaware corporation ("MMC"), does hereby constitute and
appoint any one of Jeffrey W. Greenberg, William L. Rosoff and Sandra S.
Wijnberg to be the undersigned's agent and attorney-in-fact, each with the power
to act fully hereunder without the other and with full power of substitution, to
act in the name and on behalf of the undersigned:

         To sign or to transmit electronically in the name and on behalf of the
         undersigned, as a Director and/or Officer of MMC, and file with the
         Securities and Exchange Commission on behalf of MMC an Annual Report on
         Form 10-K for the year ended December 31, 2001, any registration
         statements or prospectuses for the registration of MMC's common stock
         and related interests to be issued pursuant to MMC's employee benefit,
         compensation and stock plans, any registration statements for the
         registration of MMC's common stock for issuance in connection with
         future acquisitions or for resale by the holders thereof who acquired
         or will acquire such stock in connection with past or future
         acquisitions, any registration statements for the registration of MMC's
         debt securities or for resale by the holders thereof, and any
         amendments or supplements to such Annual Report on Form 10-K and such
         registration statements and prospectuses; and

         To execute and deliver, either through a paper filing or
         electronically, any agreements, instruments, certificates or other
         documents which they shall deem necessary or proper in connection with
         the filing of such Annual Report on Form 10-K, registration statements
         and prospectuses and amendments or supplements thereto and generally to
         act for and in the name of the undersigned with respect to such filings
         as fully as could the undersigned if then personally present and
         acting.

         IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
effective the 21st day of March, 2002.

                           /s/ A.J.C. Smith
                           -----------------------------------
                           A.J.C. Smith