ASGN Inc — Director's Dealing 2011

Jan 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2011-01-02

Reporting Person: McGrath Emmett (President, Lab Support)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-01-02	Common Stock	D	1067	$8.15	Disposed	123841	Direct
2011-01-02	Common Stock	D	3604	$8.15	Disposed	120237	Direct
2011-01-02	Common Stock	D	2944	$8.15	Disposed	117293	Direct
2011-01-04	Common Stock	D	2478	$8.16	Disposed	114815	Direct

Footnotes

F1: Executive officer elected to satisfy tax withholding obligations upon vesting by having On Assignment, Inc. withhold a number of vested shares equal to that of the employee's tax liability.