There’s definitely a fair expectation against gossiping and bad-mouthing. I don’t think that’s quite what the OP is talking about, though. I believe the relevant distinction is that (generally speaking) those behaviors don’t do any good to anyone, including the person spreading the gossip. But consider how murkier the situation becomes if you’re competing for a promotion with the person here:
if you overheard someone saying something negative about their job and then going out of your way to tell their boss.
There’s definitely a fair expectation against gossiping and bad-mouthing. I don’t think that’s quite what the OP is talking about, though. I believe the relevant distinction is that (generally speaking) those behaviors don’t do any good to anyone, including the person spreading the gossip. But consider how murkier the situation becomes if you’re competing for a promotion with the person here: