<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AND STATEMENT OF EARNINGS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-03-2000
<PERIOD-END>                               OCT-01-2000
<CASH>                                          69,092
<SECURITIES>                                     3,979
<RECEIVABLES>                                  654,457
<ALLOWANCES>                                    13,667
<INVENTORY>                                          0
<CURRENT-ASSETS>                               786,613
<PP&E>                                         309,184
<DEPRECIATION>                                 116,648
<TOTAL-ASSETS>                               1,113,889
<CURRENT-LIABILITIES>                          510,746
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        40,116
<OTHER-SE>                                     563,027
<TOTAL-LIABILITY-AND-EQUITY>                 1,113,889
<SALES>                                              0
<TOTAL-REVENUES>                             3,341,289
<CGS>                                                0
<TOTAL-COSTS>                                2,750,509
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                106,838
<INCOME-TAX>                                    42,950
<INCOME-CONTINUING>                             63,888
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    63,888
<EPS-BASIC>                                       1.79
<EPS-DILUTED>                                     1.78


</TABLE>



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