ADMINISTAFF, INC. ANNOUNCES THIRD QUARTER CONFERENCE CALL
Monday, Nov. 5, 2001 at 11 a.m. EST

HOUSTON, TX — October 4, 2001 — Administaff, Inc. (NYSE: ASF), the nation's leading Professional Employer Organization (PEO), will release its third quarter 2001 earnings prior to the open of the New York Stock Exchange on Monday, Nov. 5, 2001, and then host a conference call at 11 a.m. EST 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 800-997-8642. The call will also be webcast live at www.administaff.com and www.streetevents.com. A replay of the conference call will be available at 800-428-6051, passcode 212248, for one week after the call. The webcast will be archived for two weeks.

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.