For at-will employment, employers can legally fire employees for unreasonable reasons, including unrealistic expectations of work performance.
I believe that this sort of thing usually isn't worth the trouble. Acts of revenge are rarely really satisfying. Just find a new job at a better-run place. Then email all of your old colleagues about how much better the new place is - maybe you can recruit some of them and get a bonus for that too.
Re:Ask HN: Who Wants to Be Fired?
by technologic on Friday October 11, 2019 @10:52AM
(#21224927)
way strong, this one's long game is
You might want to contact an employment attorney in your state for a consultation. Your state Bar association can give you a referral and probably a free consultation. They will be particularly interested if this was the culmination of a pattern of bullying behavior (consequences vary by State) or if there’s some kind of protected class involved (eg you are over 40 and the manager wants a younger team).
It might seem like an unnecessary hassle, but legal action can help your remaining colleagues and possibly put some money in your pocket.