1 Exhibit 24.1 INDEPENDENT AUDITOR'S CONSENT We consent to the incorporation by reference in Registration Statements No. 33-57078 and No. 333-38849 of On Assignment, Inc. and subsidiaries on Form S-8 of our report dated January 25, 2000, with respect to the consolidated financial statements and financial statement schedule of On Assignment, Inc. appearing in this Annual Report on Form 10-K\A of On Assignment, Inc. for the year ended December 31, 1999. /s/ Deloitte & Touche LLP - ------------------------- Deloitte & Touche LLP September 12, 2000 Los Angeles, California 36