Worked for a city for 15 years. I can tell you their main goal in life is to find someone else to do it.
After 37 years of working in the private sector, I accidentally ended up working for a county when the union rep came by to join me to the union...
I said, great! I just get to pick the charity of my choice as the legal alternative. I worked an additional 8 years; never did joined the dammed union.