Speaking of anecdotes, my best union anecdote was when I was working at a construction company as a seasonal general laborer.
One day my job was to clean out some office trailers out in the back lot so they could haul them to a new site in a few days. To do this I needed a vacuum cleaner (which they had) and a generator to run it (which they also had). No problem, I said.
Until I found out that the generator was so low on oil that it wouldn't start due to the low oil cutoff switch. The oil was black and needed to be changed.
No problem again, I knew where the oil was, and I knew how to change it so I started to do just that. Until a union mechanic yelled at me and asked me what the H I was doing and that only a mechanic could do that job. I said "Ok, I'll just top it off so I can start it" ,and he said "Nope, you can't do that". I thought he was joking and kind of laughed until he called my boss over to explain it to me.
The mechanics, of course, were busy, so wouldn't get a chance to change my oil until next week, so I told my boss that I wouldn't be able to do my job. He said he'd take care of it.
And take care of it he did -- he said to go to the trailers and wait, and sure enough, a union driver showed up with a tractor trailer towed generator -- it must have been a 500KW generator, maybe larger. The union generator operator showed up soon after and started it up for me, and said he'd be back at quitting time to shut it down.
So all day long a 500KW generator sucked down 10 (?) gallons of fuel per hour (not to mention the wear and tear on that huge generator and the cost of the driver and generator operator)... just so I could run a shop-vac.
All because I wasn't allowed to put a few dollars of oil into a 5kw generator due to union rules.
That is when I lost all respect for unions.