0001104659-07-000955 8-K 1 20070101 1.01 5.02 20070105 20070105 ON ASSIGNMENT INC 0000890564 7363 954023433 DE 1231 8-K 34 000-20540 07513967 26651 WEST AGOURA ROAD CALABASAS CA 91302 8188787900 8-K 1 a07-1316_18k.htm CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES