Anybody who asks, and occasionally those who assume something else.
But I don't necessarily find it necessary to go around asserting I'm atheist. I also don't go around assert that I have Libertarian tendencies.
But that's being flip, to a serious question. No, I wouldn't tell a Christian boss, just to educate him, or to relieve my mind. Given a straight question I would. I have very carefully not announced to my in-laws without lying, at least not yet. Why? Because my husband's not out and with his family I feel it's his call. With mine, I'm out.
But I don't necessarily find it necessary to go around asserting I'm atheist. I also don't go around assert that I have Libertarian tendencies.

But that's being flip, to a serious question. No, I wouldn't tell a Christian boss, just to educate him, or to relieve my mind. Given a straight question I would. I have very carefully not announced to my in-laws without lying, at least not yet. Why? Because my husband's not out and with his family I feel it's his call. With mine, I'm out.
If there is a god, I want to believe that there is a god. If there is not a god, I want to believe that there is no god.