Adecco S.A. named Robert Crouch as new regional head of North America effective May 1. He replaces Tig Gilliam, who will pursue a career outside of Adecco.

Crouch had served as CFO of the MPS Group from 2001 until 2010, and had been elected to the MPS board in 2008.

Adecco acquired MPS in 2010. At that time MPS, based in Jacksonville, Fla., ranked as the world’s 13th-largest staffing firm. MPS’ operations included professional staffing and the Beeline, a vendor management system (VMS) provider.

Crouch played a key role at growing MPS into a company with revenue of $2.2 billion in 2008, according to Adecco. Prior to MPS, Crouch began his career at Arthur Andersen.

“I am delighted to welcome Bob on board,” said Adecco Group CEO Patrick De Maeseneire. “His engaging leadership style, strong track-record in staffing and operational focus will be of great value to further strengthen our leading position in North America. I would like to thank Tig Gilliam for his dedicated commitment and successful contribution to the Adecco Group over the past five years and wish him all the best, both personally and professionally.”

Gilliam had taken over as head of Adecco’s North America operations in October 2009. He had joined the Adecco Group in January 2007 as country manager for the U.S. and Canada.