The place I worked before this had an unspoken rule that you can't decline if your boss invites you to a drinking party,  and everyone gave me a dirty look because I always declined.
ここの前に働いていた会社は、上司から誘われた飲み会は断れないみたいな、暗黙の了解とかあって、毎回断る私は結構白い目で見られてたよ。