Isn't this similar to McDonald's point system? Workers get points as they work, different menu items cost a certain amount of points. They have to use all points (and eat their terrible food) before a certain period, else they lose them.
If McDonald's is taking money out of people's paychecks and replacing it with McPoints or whatever they call them, then yes.
Companies can give prizes or awards on top of paying their usual wages with actual money, but as soon as they start paying people less because they're compensating them with fake money it's a problem.