In Norway, if a restaurant abuses its staff, it's not just the staff that will strike or sympathetic customers who will organize a boycott. It's the plumbers who won't show up to fix the sink that breaks, the carpenters who won't show up to patch up a dented door jam or install a new shelf, and the shippers who won't drive ingredients out to the restaurant anymore.
In the US, that kind of coordinated cross-discipline striking is explicitly illegal (I'd have to go look up my history to confirm, but I believe that was related to the federal intervention to stop the rail strikes because it disrupted mail delivery).