Certain organizations, especially within certain industries, love to save on labor, and one of the ways they do this is by sending workers home from a scheduled shift when things are quiet to try and keep from being overstaffed. Of course, predictably, as soon as the manager has sent someone home, you'll end up with the biggest rush of customers you've ever experienced, ensuring that the rest of the day is going to be a living nightmare—and no one will be getting any breaks.