ADMINISTAFF NAMES HOWARD G. BUFF VICE PRESIDENT OF BENEFITS AND CORPORATE HUMAN RESOURCES

HOUSTON, TX — July 30, 2001 — Administaff, Inc. (NYSE: ASF), the nation's leading Professional Employer Organization (PEO), today announced that Howard G. Buff has joined the company as vice president of benefits and corporate human resources.

In his new role, Buff will be responsible for the administration of all benefit plans covering both corporate and worksite employees, including the company's health and welfare plans, workers' compensation insurance plan, short and long-term disability insurance plans, 401(k) plan and employee assistance programs. He will also oversee Administaff's corporate human resources functions, including personnel administration, employee compensation and employee relations. Buff will report to Richard G. Rawson, executive vice president of administration and chief financial officer.

"Howard brings a wealth of relevant experience that will benefit small business clients, employees and Administaff," said Rawson. "His knowledge of the PEO and human resources outsourcing industry combined with his ability to manage profitable, fast-growing business segments will be a great fit for Administaff's high-growth environment."

Prior to joining Administaff, Buff spent 15 years at Paychex, Inc., a payroll and human resource services company, where he gained experience in product operations, new business strategies, sales, and PEO and human resources outsourcing management. Buff received top field honors during his tenure and rose quickly to the senior management level. Most recently, he served as president of Paychex Agency, Inc. and director of product management and operations for the Human Resource Services and PEO division.

Buff attended Rochester Institute of Technology and currently holds professional insurance licenses for life, health, annuities, property and casualty in over 40 states. He is a member of the Society for Human Resource Management.

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. With 2000 revenues of $3.7 billion, Administaff ranks number 448 on the Fortune 500 list. In addition, Administaff is included on Fortune's list of "America's Most Admired Companies," on the Forbes Platinum 400 list of the best big companies in America and on the InformationWeek 500 list of leading information technology innovators.

Administaff's Personnel Management System includes employment administration, benefits management, government compliance, recruiting and selection, employer liability management, training and development, performance management and owner support. These core services are complemented by an eBusiness strategy that includes Administaff Assistant®, an eService platform that provides clients and worksite employees with information and resources to help maximize the benefit of their Administaff services; and bizzport^SM marketplace, an eCommerce portal that features value-added products and services from best-of-class providers such as American Express, AT&T, Bank One, Continental Airlines, Dell, IBM and Spiegel.

Administaff has 35 sales offices in 19 major markets. For additional information, visit the Administaff's Web site at www.administaff.com.

(Note: The statements contained in this press release that are not historical facts are forward-looking statements that involve a number of risks and uncertainties. Therefore, the actual results of future events described in such forward-looking statements could differ materially from those stated in such forward-looking statements. Among the factors that could cause actual results to differ materially are: (i) changes in general economic conditions; (ii) regulatory and tax developments; (iii) changes in Administaff's direct costs and operating expenses; (iv) the estimated costs and effectiveness of capital projects and investments in technology and infrastructure; (v) Administaff's ability to effectively implement its eBusiness strategy; (vi) the effectiveness of Administaff's sales and marketing efforts, including the company's marketing arrangements with other companies; and (vii) changes in the competitive environments in the PEO industry. These factors are described in further detail in Administaff's filings with the Securities and Exchange Commission.)