Not all the time. I worked for a company that treated me pretty well around the union, but the union would protect the workers who screwed up and would get them back, even when the screw up was a major one that violated booze laws. And since it was seasonal work, they didn’t really have a good method for helping find work out of the season… I really think the company would still act the same without the union.

Or in qualified workers shortage.

This is the only answer.