Introduced on February 15, 2011, AB 508 (Swanson) would give a bidding preference to solid waste handling and recycling contractors and subcontractors who agree to retain, for a period of at least 90 days, certain employees who were employed to perform essentially the same services by the previous contractor or
subcontractor.

http://leginfo.ca.gov/cgi-bin/postquery?bill_number=ab_508&sess=1112&house=B&author=swanson