My minimum wage job was back in 1972.
Dishwasher/porter in a hospital. Paid $1.76 an hour (I think minimum wage was $1.60). Time and a half for holidays and anything over 40 hours a week.
Part time job while I was in high school.
Many a week I when over 40 hours - but that was because I was willing to work double shifts on weekends.
One of my first minimum wage jobs was a dishwasher at a busy restaurant at Logan Airport. This was late 1970s so would have been $2.65/hr. Typically the manager would have two dishwashers on the dinner shift. But the guy I was paired with was a lazy bum and I ended up doing most of the work. When he was out sick, I could easily keep up with the dishes all by myself. The manager noticed and bumped me to something like $3.50/hr and let me work the shift by myself. That lasted a few months until I had to go to boot camp for the Marines. She was sorry to see me go!