I would assume it has to do with the low rate of unionization. A high rate of organization among employers and employees really disincentives 'rogue' behavior.

I would assume it has to do with the low rate of unionization. A high rate of organization among employers and employees really disincentives 'rogue' behavior. These online discussions naturally tends to focus on things like salaries and conflicts, but often these organization also have other roles in industry, education and even politics. At least I often find this preferable to just having a few politicians or a few large companies trying to decide what to do.