I always tell people this.
The hardest I ever worked was at the K-cafe at K-mart for $6.25 and hour when I was in high school. I literally ran the entire restaurant myself. I cooked the pizza, hot dogs, hot sausages, pretzels, chicken fingers, served the customers, washed the dishes, washed the restaurant, made the soda was stocked and did the inventory and put the truck restocks away myself. They only had one worker each day and I did everything myself and since I was the only guy, I was always scheduled when the truck came to restock........I've never worked harder than that and when I got a raise, they bumped me from $6.25 to $6.75.
I made more money DJing, doing sports media and sports betting and haven't worked nearly as hard. I've had 30K on an MLB game.