This collection is comprised of the Northern California records of the Service Employees International Union (SEIU) United Healthcare Workers-West, and its predecessor Union Local 250. Records date from 1934-2010 (photocopied material only for 1934 -circa 1950). Materials primarily document the organization's activity from 1990 to 2008, and include executive and administrative files; union organizing files; contract negotiations; collective bargaining agreements with hospitals, convalescent homes, homecare organizations, and emergency service providers; periodicals; photographs; and video recordings. Some historical and anniversary records are also present.