ROBERT HALF INTERNATIONAL ANNOUNCES SCHEDULE FOR FOURTH-QUARTER EARNINGS RESULTS AND CONFERENCE CALL

MENLO PARK, California, January 17, 2006 -- Robert Half International Inc. (NYSE symbol: RHI) today announced it expects to release fourth-quarter 2005 earnings results on Thursday, January 26, at approximately 4 p.m. ET. Robert Half International management will conduct a conference call at 5 p.m. ET on January 26, following the release. The dial-in number is 800-540-0559 (+1-785-832-1508 outside the United States) and the passcode is "Robert Half International." A taped recording of this call will be available for replay beginning at approximately 8 p.m. ET on January 26 and ending at 8 p.m. ET on February 2. The dial-in number for the replay is 800-688-7339 (+1-402-220-1347 outside the United States). The conference call also will be archived in audio format on the company's website at www.rhi.com.

Founded in 1948, Robert Half International Inc. (RHI) is the world's first and largest specialized staffing firm. RHI is a recognized leader in professional consulting and staffing services and is the parent company of Protiviti^® (www.protiviti.com), a leading independent internal audit and risk consulting firm.

The company's specialized staffing divisions include Accountemps^®, Robert Half^® Finance & Accounting and Robert Half^® Management Resources, for temporary, full-time and project professionals, respectively, in the fields of accounting and finance; OfficeTeam^®, for highly skilled temporary administrative support personnel; Robert Half^® Technology, for information technology professionals; Robert Half ^® Legal, for legal personnel; and The Creative Group^®, for advertising, marketing and web design professionals. RHI serves its clients and candidates through more than 330 offices worldwide and through online job search services at its divisional websites, all of which can be accessed at www.rhi.com.