Growing up, I didn't even know how powerful unions were.
My mom worked at a factory and hurt herself when I was a kid. She couldn't work for months. The union was why I was able to still get food and do hospital visits. She healed up and went right back to work.
With my first kid, my wife's job decided her pregnancy was interfering with their need for labor so they fired her. They made it ABSOLUTELY CLEAR it wasn't a pregnancy-related firing over and over again, but that she wasn't meeting expectations... Because her body hurts from being pregnant. No legal protection either.