That's BS. At least the Â«uansettÂ» part. What is this, the military? Or does that look like a church to you?
I was on my way in, and hadn't reached the office yet.
I think this sums it up fairly well:
Hats are removed when inside, except for places that are akin to public streets, like lobbies, corridors, and crowded elevators (non-residential). In a public building (where there are no apartments) the elevator is considered a public area.