I have a friend who for years has been a longshoreman. For years they only job he took was working car ships. The drove the car off the ship and walked back on got another and drove it off. Wash, rinse, repeat. If they unloaded the ship they were done for the day and were paid and given credit for 8 hours irrespective of how few hours they actually worked.
After several years of that, he got his first aid ticket. For the rest of his career he sat in the first aid room waiting for someone to get hurt. He mostly read and napped. He retired in luxury at 55.