I mean it depends. If you document your communications thoroughly and the company is sufficiently sloppy, then backlash from HR could set you up for a lucrative lawsuit.
I saw some CA employment lawyer [1] on youtube, and something he says a lot on his talks is "Don't call me if your manager is mean or not following some legal requirements, instead, here's how to best document and complain about it so it'll look good for you if they ever retaliate against you. Once they retaliate, then you should call me."
[1] https://www.youtube.com/@braniganrobertsonlaw/