When I was hired at UAL, I asked how JM worked, ie can it be denied, etc. I was told by my Captain "Here is how it works, you do NOT accept it, period, if you do, and the Captain finds out, you will not touch controls for the whole trip, and he probably won't talk to you either. It is a fast way to get on the 'bad' side"

But then I was furloughed 3 months later.