[RangerScience]

IANAL / California-centric -

There's a legal employment concept called "quit for cause", it's kind of the inverse of "fire for cause". In CA (and very much IANAL), if your contract is for remote work and you are required to RTO, that'd qualify as "cause". AFAICT you can tie this to other things, like "I can quit and keep the signing bonus", "I can quit and get my first year's stock", things like that - at least on a legal level. Negotiating that in (and enforcing it) are other questions.

[danaris]

From a NYS perspective: At least for the purposes of drawing unemployment, there's a similar concept here, "constructive dismissal". I know someone who had their job changed almost completely underneath them, into something that they had repeatedly stated was unacceptable to them. They quit, and were able to claim unemployment exactly as if they had been fired without cause.