Its not normally the question, especially at first. When it's mentioned, it's normally like, "so what church do you go to?" Something like that. Here, you keep your mouth shut, especially if you like your job, or need it, because they won't fire you persay, but they'll find something else to fire you for. They will also authorise you, your fellow employees I mean, so they will make you miserable at your job. So much so that you'll want to quit. So there's alot of tongue biting here for sure.

I've never had an employer ask.

I don't bring it up for good reason. I once worked as a home health aide for a private employer. I got the job because my friend had been the aide but needed to take time off for surgery. For reasons unknown, she told the woman that I was an atheist, and it started an unnecessary shit storm in her holy rolling soul. She was superficially kind but not for one minute did she stop brow beating me to pray, and asking me why I was angry at god (oh I hate that one in particular). It was all I could do to keep myself from telling her that I was angry at god for the same reason I was angry at unicorns, leprechauns and the tooth fairy. But I remained polite. After one year of trying to get me to convert, she fired me because "jesus told her to." Despite the fact that I live a mere 60 miles north of New York City, amidst every demographic in the world, people around here are bible-thumping fanatics who DO NOT react well to atheists!