deal breaker

A job was offered Thursday. I have a meeting with HR next week. They may require I get the covid vaccine. Not sure, as I sense mixed signals. If required that will be a deal breaker.

My first son just turned 27 last week. He is a qualified engineer but he is not where he thought he would be in life at this age. He is getting frustrated that he has still not landed the job/deal that will be a deal breaker for him. I am worried about him because he now locks himself up or...