I think you should have a candid conversation with him and the HR manager or equivalent (together) about the working hours mentioned in your contract and his ex

I think you should have a candid conversation with him and the HR manager or equivalent (together) about the working hours mentioned in your contract and his expectations. Also ask feedback about the quality of your work. I'm sorry to say this relationship may already be poisoned and it might be difficult to revert it, even if you work the hours he's requiring. He may just be trying to take advantage of your situation (recent hire, recently relocated) or he's setting up some excuse for project delays (someone to blame). I don't believe long-term crunch mode is effective. I've been burned by it before, so I would probably say that I will deliver more and better by working sane hours, and try and stick to that arrangement. If the situation doesn't improve you might want to shop around for another opportunity.