Reversed. Plaintiffs are state correctional employees who sought additional compensation for pre and postwork activities that include walking from outermost gate of prison to their work posts. The court divided Plaintiffs into two groups: union and non-union. The appeals court held that the non-union employees were entitled to overtime. The California Supreme Court held the union employees were not entitled to additional compensation because their collective bargaining agreement took that into account. And the non-union were not entitled because the walking time did not fit the definition of compensable work time under the Pay Scale Manual.