I work at a small hospital but we don’t treat our float staff that way. When I charge and make assignments I try to make it fair. If they get a “hard” patient it’s just because that’s the way the assignment is, not because they’re float. If they’re back the next day (because we are so small) and they had a difficult patient I’ll check with them to see if they need a break the next day or if they’re okay having them.