State Unit 12 is a collective bargaining unit of all of the crafts, maintenance, and allied job classifications of employees within the State of California civil service system. There are approximately 12,000 people within the Unit; some 240 separate job classifications; who work in some 1,100 different job sites from border to border within the State. In 1991 the International Union of Operating Engineers, AFL/CIO, Locals 3, 12, 39 & 501 was elected in a state-wide vote by all persons within the various classifications to be the exclusive representative of the Unit for collective bargaining purposes with the State.