ADMINISTAFF, INC. ANNOUNCES SECOND QUARTER CONFERENCE CALL
Wednesday, Aug. 1, 2001 at 11 A.M. EDT

HOUSTON, TX — June 26, 2001 — Administaff, Inc. (NYSE: ASF), the nation's leading Professional Employer Organization (PEO), will release its second quarter 2001 earnings prior to the open of the New York Stock Exchange on Wednesday, Aug. 1, 2001, and then host a conference call at 11 a.m. EDT to discuss the results. Paul J. Sarvadi, president and chief executive officer, and Richard G. Rawson, executive vice president of administration and chief financial officer, will discuss business trends and answer questions from investment analysts. Investors, analysts, media and other interested persons can access the call by dialing 888-287-1959. The call will also be webcast live at www.administaff.com and www.streetfusion.com. A replay of the conference call will be available at 888-836-6074, passcode 5350213, for ten days after the call. The webcast will be archived for one month.

Administaff is a leading personnel management company that serves as a full-service human resources department for small and medium-sized businesses throughout the United States.