Have been working with this company for a few years. Crush my work, and occasionally fill in on another role when that person can't make it. That position is highly specialized, very difficult, and I don't enjoy it at all. So I make sure I'm paid as much as their regular worker when I do it. As a result of my recent request for a bump on those days the budget person called me up and told me we're not allowed to discuss wages (which is probably not legal here in NE US). So as a result they can find someone else to do the hard job (it will probably take 6 weeks of training lol).