Legal Question in Employment Law in California

Is this legal?

Yes, as long as you are properly classified as salaried exempt, such as managers, you can be worked as long as they require, and without any overtime pay. That's what you get paid the big bucks for, right? :)

It is your choice whether you accept such job, or stay in such job. I probably wouldn't unless the pay was spectacular. If you quit, you would be disqualified from unemployment benefits, so have a new job lined up before you do.