1 EXHIBIT 23.1 INDEPENDENT AUDITORS' CONSENT We consent to the incorporation by reference in this Registration Statement of On Assignment, Inc. on Form S-8 of our report dated January 24, 1997, appearing in the Annual Report on Form 10-K of On Assignment, Inc. for the year ended December 31, 1996. /s/ Deloitte & Touche LLP Los Angeles, California October 24, 1997