They all work very hard to make sure all is fair. People complain about unions until they don't have one. I was a USWA member for ten years until I moved to Texas. There are no Unions here and let me say, it's very scary to know you could be fired just because the boss is having a bad day.
Without Unions, there is no fairness or equality.
Don't take your Union for granted. They all do the best they can.