EXHIBIT 24.0

                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Carl E. Fasig his true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him, and in his name, place and
stead, in any and all capacities (i) to sign the Arthur J. Gallagher & Co.
Annual Report on Form 10-K for the fiscal year ending December 31, 1995 and any
and all amendments thereto and (ii) to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in such connection, as fully to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has duly executed this instrument as 
of this 28th day of February, 1996.


                                            /s/ T. KIMBALL BROOKER
                                            ----------------------------
                                            T. KIMBALL BROOKER

 
                                                                    EXHIBIT 24.0

                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Carl E. Fasig his true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him, and in his name, place and
stead, in any and all capacities (i) to sign the Arthur J. Gallagher & Co.
Annual Report on Form 10-K for the fiscal year ending December 31, 1995 and any
and all amendments thereto and (ii) to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in such connection, as fully to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has duly executed this instrument as 
of this 28th day of February, 1996.


                                            /s/ JOHN G. CAMPBELL
                                            ----------------------------
                                            JOHN G. CAMPBELL


 
                                                                    EXHIBIT 24.0

                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Carl E. Fasig his true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him, and in his name, place and
stead, in any and all capacities (i) to sign the Arthur J. Gallagher & Co.
Annual Report on Form 10-K for the fiscal year ending December 31, 1995 and any
and all amendments thereto and (ii) to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in such connection, as fully to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has duly executed this instrument as 
of this 28th day of February, 1996.

                                            /s/ ROBERT E. GALLAGHER
                                            ----------------------------
                                            ROBERT E. GALLAGHER

 
                                                                    EXHIBIT 24.0

                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Carl E. Fasig his true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him, and in his name, place and
stead, in any and all capacities (i) to sign the Arthur J. Gallagher & Co.
Annual Report on Form 10-K for the fiscal year ending December 31, 1995 and any
and all amendments thereto and (ii) to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in such connection, as fully to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has duly executed this instrument as 
of this 28th day of February, 1996.


                                            /s/ JACK M. GREENBERG
                                            ----------------------------
                                            JACK M. GREENBERG

 
                                                                    EXHIBIT 24.0

                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Carl E. Fasig his true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him, and in his name, place and
stead, in any and all capacities (i) to sign the Arthur J. Gallagher & Co.
Annual Report on Form 10-K for the fiscal year ending December 31, 1995 and any
and all amendments thereto and (ii) to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in such connection, as fully to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has duly executed this instrument as 
of this 28th day of February, 1996.


                                            /s/ PHILIP A. MARINEAU
                                            ----------------------------
                                            PHILIP A. MARINEAU

 
                                                                    EXHIBIT 24.0

                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Carl E. Fasig his true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him, and in his name, place and
stead, in any and all capacities (i) to sign the Arthur J. Gallagher & Co.
Annual Report on Form 10-K for the fiscal year ending December 31, 1995 and any
and all amendments thereto and (ii) to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in such connection, as fully to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has duly executed this instrument as 
of this 28th day of February, 1996.


                                            /s/ WALTER F. MC CLURE
                                            ----------------------------
                                            WALTER F. MC CLURE

 
                                                                    EXHIBIT 24.0

                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Carl E. Fasig his true and lawful attorney-in-fact and agent, with full
power of substitution and resubstitution, for him, and in his name, place and
stead, in any and all capacities (i) to sign the Arthur J. Gallagher & Co.
Annual Report on Form 10-K for the fiscal year ending December 31, 1995 and any
and all amendments thereto and (ii) to file the same, with all exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorney-in-fact and agent full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in such connection, as fully to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorney-in-fact and agent, or his substitute or substitutes, may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has duly executed this instrument as 
of this 28th day of February, 1996.


                                            /s/ JAMES R. WIMMER
                                            ----------------------------
                                            JAMES R. WIMMER