re: New Job Changed Schedule on First Day...Any Recourse?

That fricking sucks... I'd ask your boss if there was a mixup, because when you agreed to join the company and in the letter you signed it had your schedule as M-F.

If he disagrees, I wouldn't push it, just ask if you two can figure out a work around because that schedule isn't conducive to your lifestyle, but you like the company (bullshite bullshite bullshite)

If all else fails, start doing it and immediately start looking.

Don't piss them off because if you are in a right to work state, they will fire your arse. Although, I think you would have some legal recourse as that is breach of contract. But I don't know how that would play into a right to work situation.