when he comes home sit on the couch with your nightgown eating chips and watch tv.
He's an ashole! Leave him!
I would do everything I could, to help my partner GET a new job.
I'm a lunatic and believe in people too much. I've carried for some time women, but I like helping those I've cared about. Unfortunately, when I couldn't afford the finest for them for a spell...I was alone. If you're genuinely trying and he genuinely loves you, he'll stay past the ultimatum. Perhaps he's trying to give you a boot in the butt with the ultimatum. Sorry if this is of no help.
If he says things like that, my 3 cents says its time to move on to bigger and much better...sans him. Oh and a side note, keep your head up high. If you try hard enough that fantastic career is just a beat away. Good luck. :-))