Koosharem Corp., parent company for The Select Family of Staffing Companies, announced Friday it completed its acquisition of Westaff Inc., a Walnut Creek CA-based staffing firm.

Westaff, founded in 1948, became a private company in the deal. Select estimates its annual revenue after the transaction will be $1.6 billion. Both Select and Westaff focus on light industrial and office/clerical staffing.

"Westaff's long-standing reputation and strong client base in the marketplace have attracted my interest for several years," said Steve Sorensen, chairman and CEO of The Select Family of Companies. "I'm enthusiastic that we've finally realized our efforts to bring Westaff's book of business and talented operations teams into the Select fold."