We had a small workout facility at work, and if I biked to work, I sometimes took a shower. Although I was generally the only person there, it did not bother me at all if coworkers happened to see me nude.
Although it would be nice to work nude with like-minded individuals, I don't think many of my coworkers were like-minded. My boss did mention that she went topless on a beach in Mexico, so I guess she would be cool. Given that a lot of the guys spent much of their day talking about or looking for porn, I don't think they'd really understand naturism.