EXHIBIT 24.2





                                POWER OF ATTORNEY

         The  undersigned,  a Director of Marsh & McLennan  Companies,  Inc.,  a
Delaware corporation (the "Company"), does hereby constitute and appoint any one
of Jeffrey W.  Greenberg,  Sandra S. Wijnberg and Gregory F. Van Gundy 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 of the Company, and file with the Securities
         and  Exchange  Commission  on behalf of the  Company  any  registration
         statements or prospectuses for the registration of the Company's common
         stock and related interests to be issued pursuant to the Company's duly
         adopted   employee   benefit,   compensation   and  stock  plans,   any
         registration  statements for the  registration of the Company's  common
         stock for issuance in connection with acquisitions or for resale by the
         holders  thereof who acquired or will acquire such stock in  connection
         with past or future acquisitions,  and any amendments or supplements to
         such  registration  statements and the Company's  Annual Report on Form
         10-K for the year ended December 31, 1999; 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  registration  statements  and  prospectuses  and
         amendments or supplements thereto or to the Annual Report on Form 10-K,
         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 18th day of May, 2000.

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





                                POWER OF ATTORNEY

         The  undersigned,  a Director of Marsh & McLennan  Companies,  Inc.,  a
Delaware corporation (the "Company"), does hereby constitute and appoint any one
of Jeffrey W.  Greenberg,  Sandra S. Wijnberg and Gregory F. Van Gundy 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 of the Company, and file with the Securities
         and  Exchange  Commission  on behalf of the  Company  any  registration
         statements or prospectuses for the registration of the Company's common
         stock and related interests to be issued pursuant to the Company's duly
         adopted   employee   benefit,   compensation   and  stock  plans,   any
         registration  statements for the  registration of the Company's  common
         stock for issuance in connection with acquisitions or for resale by the
         holders  thereof who acquired or will acquire such stock in  connection
         with past or future acquisitions,  and any amendments or supplements to
         such  registration  statements and the Company's  Annual Report on Form
         10-K for the year ended December 31, 1999; 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  registration  statements  and  prospectuses  and
         amendments or supplements thereto or to the Annual Report on Form 10-K,
         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 18th day of May, 2000.

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