Historically, labor unions arose when people had gotten a taste of a different lifestyle and were willing to pay a lot more for their basic livelihood and had gotten into a fix they couldn't get out of - because they had accepted the unacceptable to begin with. Accepting something you have to form a labor union to fight after the fact only tells me that people were acting against their own best (or even good) interests for a long time. I don't see any rational, coherent explanation for this sort of behavior in humans, but it's all over the place.