Last example. My father owned a tin smith shop. He employed approximately 30ish tradesmen. One day a few of them got together and decided that it was time that the shop become a union shop. Sometimes you have to wonder about the intelligence of some people. The end result was, Dad lowered their wages to the union rates. took away the perks like taking the company trucks home. A couple of them lost vacation time. The guys then started to grumble, and this was then the final excuse dad needed to retire. He sold the shop to a new owner that new nothing about the business. In two years, he ran it to the ground. The shop closed, and everyone became unemployed. The union really helped out here
Caveat: I know jack about union laws. It seems to me though, that your dad's employees went about this the wrong way. Had they said, "As a group of people working together toward common purpose, we declare ourselves a Union," things may have worked out better for them. Unless they were dicks with unrealistic expectations, which sorta sounds like it might have been the case. I see no reason though, that people need to seek out an already existing union when they collectively have the bargaining power necessary to fulfill their needs. Every time I hear about a business with nothing but miserable employees, who complain that they can't do anything about it because they don't have a union, I want to scream, "So fucking make one! You don't need anyone's permission! They can't afford to lose every single one of you at once so you can take control of this situation!"
Of course, I'm probably wrong. There's probably some law on the books that says all the sexually harassed waitresses at that Italian restaurant in my town can't be part of a union, or that they can only part of a specific regional union that doesn't give a flying shit about them.