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: Brouse Mark (President, Vista Staffing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-01-02	Common Stock	D	2102	$8.15	Disposed	128896	Direct
2011-01-02	Common Stock	D	1868	$8.15	Disposed	127028	Direct
2011-01-04	Common Stock	D	1396	$8.16	Disposed	125632	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	8500	Indirect

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.