<ARTICLE> 5
<LEGEND> This schedule contains summary financial information extracted from
the Arthur J. Gallagher & Co. Consolidated Financial Statements included in
Amendment No. 1 to the Form 10-K/A Annual Report for the fiscal year ended
December 31, 1998 and is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<RESTATED>
<MULTIPLIER> 1,000

                                                                         
<PERIOD-TYPE>                   12-MOS                   12-MOS                   12-MOS
<FISCAL-YEAR-END>                         DEC-31-1998              DEC-31-1997              DEC-31-1996
<PERIOD-START>                            JAN-01-1998              JAN-01-1997              JAN-01-1996
<PERIOD-END>                              DEC-31-1998              DEC-31-1997              DEC-31-1996
<CASH>                                        155,029                  162,226                  154,962
<SECURITIES>                                   57,368                   62,681                   53,409
<RECEIVABLES>                                 294,479                  227,452                  248,265
<ALLOWANCES>                                    1,500                      860                      896
<INVENTORY>                                         0                        0                        0
<CURRENT-ASSETS>                              542,665                  492,770                  486,991
<PP&E>                                         99,656                   91,794                   85,736
<DEPRECIATION>                                 67,852                   62,233                   58,127
<TOTAL-ASSETS>                                758,435                  669,609                  617,280
<CURRENT-LIABILITIES>                         539,935                  484,797                  464,720
<BONDS>                                             0                        0                        0
<PREFERRED-MANDATORY>                               0                        0                        0
<PREFERRED>                                         0                        0                        0
<COMMON>                                       18,049                   17,571                   17,437
<OTHER-SE>                                    187,498                  153,880                  121,477
<TOTAL-LIABILITY-AND-EQUITY>                  758,435                  669,609                  617,280
<SALES>                                       535,626                  485,937                  466,450
<TOTAL-REVENUES>                              554,462                  519,756                  490,956
<CGS>                                         288,260                  265,204                  258,992
<TOTAL-COSTS>                                 288,260                  265,204                  258,992
<OTHER-EXPENSES>                              179,166                  168,396                  160,563
<LOSS-PROVISION>                                  241                      639                    2,122
<INTEREST-EXPENSE>                              1,316                    1,050                      912
<INCOME-PRETAX>                                85,479                   84,467                   68,367
<INCOME-TAX>                                   28,087                   28,015                   22,885
<INCOME-CONTINUING>                            57,392                   56,452                   45,482
<DISCONTINUED>                                      0                        0                        0
<EXTRAORDINARY>                                     0                        0                        0
<CHANGES>                                           0                        0                        0
<NET-INCOME>                                   57,392                   56,452                   45,482
<EPS-BASIC>                                      3.20                     3.24                     2.61
<EPS-DILUTED>                                    3.06                     3.13                     2.51