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It sounds like the manager at this fast food establishment made a tough choice. He could either fire an employee to save on labor costs, or he could cut everyone's hours on the theory that it's better to spread the pain around a little. If you leave, don't be surprised when your hours are redistributed to everyone else. Or, one of your co-workers might quit sooner than you can, and then you might find your hours increasing. The same economics are likely to affect the bookstore up the street, though, so, at least in this case, make sure you have secured your next position before you leave this one.