Have you spoken with your union rep about this? What they’re doing is creating a hostile work environment and that’s illegal.
I am in Union film work so basically there’s no real solve because all the jobs I am on are only around approximately 8 months before the crew is desolved and rehires happen. I also have taken some of the prerequisite courses for the Steward program and spoken to them directly.
The advice is always the same. Technically I can win my legal right to remain on a single show but they have no obligation to hire me for the next one and its’s well known that taking a boss to arbitration unless everyone basically agrees it is beyond a doubt warranted is career suicide… And every crew is enmeshed in a web of gossip and word of mouth. If basically the hall is empty because everything is busy being “a problem” is fine. But when there’s no work and it’s name requests only I got to be somebody’s go to or I starve.