Unless one professes to believe in a higher power, it's persona non grata pretty much everywhere. I doubt people who are agnostic or atheists would ever admit it even to their colleagues. In many places, it would get people fired.
I don't understand these stupid atheist "organizations". I mean, all atheism is really about is... I just don't believe there is a being in the sky preparing a paradise for the faithful. It's as simple as that. I just don't believe it. In my lifetime, if I had openly said that I would have been fired from at least two jobs (that I know of), been shunned by most of my neighbors, and the godly folk would not have let their children play with my children.
Now you tell me, how is that right in a country that is supposedly built of freedom of religion? Boggles my mind, it does.