In at-will states like California he doesn't really need the "right" to fire anyone (assuming he isn't firing them for any protected class reasons). I doubt th

In at-will states like California he doesn't really need the "right" to fire anyone (assuming he isn't firing them for any protected class reasons). I doubt the majority of Twitter employees (in the US anyway) have any sort of individual employment contract which specifies anything different than the typical at-will employment. I suspect though that if he does fire people for refusing to return to the office that given the circumstances (twitter very openly being a 'remote first' workplace for years) that states would view that as a constructive dismissal and at the very least those fired would be eligible for unemployment benefits despite being fired "for cause".