If they are offering a relocation package, and it sounds like they are, then this likely doesn't fall under constructive discharge. Also in CA a constructive discharge lawsuit often only makes you entitled to the same benefits as if you were fired (i.e. severance and unemployment). These guys aren't being fired for cause so they still qualify for unemployment and the severance deal Apples offering is probably already worth more than many would get in a lawsuit. A lawsuits not gonna force Apple to move the office back.

I don't know why everyone always jumps straight to "constructive discharge" and "this must be illegal". Guys, we live in a legal hellscape, Apple may be being shitty but they aren't doing anything illegal.