This isn't something that's personally affected me at work yet, but it is happening to someone I know right now.
His boss his very Christian, while my friend is an Atheist. This boss keeps starting these one-on-one discussions during lunch that go along the lines of, "It's amazing how complicated x is - there's no way we could possibly be able to do that or explain it ourselves", to which my friend will side-step the statement with something like "lol not yet!" and try to change the subject. The first time they had a discussion like this (which again the boss initiated), my friend got more "into it" than he realized he probably should have, and it left a bad taste in both his and his boss's mouths. Ever since then he's tried to avoid any kind of discussion about religion (or the lack thereof), but his boss won't let it drop. Today my friend even went so far as to say he didn't want to talk about religion at work, and his boss responded that to him, it wasn't a religious discussion, just "logic".
If I were in his situation I'd be freaking out, not just out of being furious but because of being scared to lose my job. I told him to document everything said, and told him any different treatment he receives, even if he's not fired, is still religious discrimination. It's not even right that he's being forced to have these religious conversations with his boss (who I should mention actually OWNS the company), but what can he do? Suing/lawyers cost money, and it's not like it's even gotten that far yet. It's just a nasty, precarious situation to be in, and it'd be nice to shut it down as quickly, quietly and amiably as possible. He doesn't want to leave the company anytime soon, and with this being his first career-oriented job out of college and only being there for a year, it's not like he could find another job that easily even if he decided to look.
Any input would be valued and appreciated. Thanks!
I would look for a different job, even though you said it would be hard to find. This boss is a bigot. I have dealt with religious bigot bosses before. It will only get worse. The way he is speaking to your friend is not ethical. I don't want your friend to get fired for saying the wrong thing. The only other thing he can do is pretend to agree with him, and trust me after a while that is going to really hurt your friend emotionally. I did that once and that ended up being the reason I eventually quit the job before I even had another job.
Debating religion with a 'Boss' is a no win!
If he 'losses' the debate, he can make up some trumped up charge and release you, many states are 'at will' for employment. By default, he WINS!
If he 'wins', will he continue to try to sell to you? Will he define you as an 'undesirable', then release/fire you? He wins again!
You could ask for legal aide, asserting that the work place/environment is adversarial, or that the boss is useing bullying tactics. This might work, but it will be a crapy working environment for both of you.
You might ask him to leave religion, at work, as off limits. This might be only as good as his memory, but his true believer status will goude him on to greater insults, and demands on your conformity. Again legal action might work, but...