An exception applies if a collective bargaining agreement or employment contract says your employer must tell you about the change in your schedule. In addition, the state might have a “show up pay” or “reporting pay” law. In this case, your employer must pay you for the lost time if you arrived to work and your total hours were reduced and different from what was originally scheduled and known the day before. Also, if you take leave under the Family Medical Leave Act, the act protects your job duties, work schedule and place of work. Your employer cannot change your hours or alter the conditions of your employment when you return.