I only had one job like this in my life, working for a municipal water company digging up lines. I didn't really mind getting out of the hot sun for a while, but it does sap your vitality and challenge your integrity.
The rest of my jobs were always piecework of one sort or another, and they were hard work. Once I worked in an encyclopedia selling crew. We would meet around 4 or so, drive out to some 'burb and get a beer and sandwich and the crew chief would tell us how much nookie he was getting. Then it was out to hit the street until ten of so, and believe me you were on. I sold so much that the credit department turned down half of them, which really angered me. Give me my commission, and just sell the damn notes! It's not my responsibility to check the customer for a pulse.
I think most of the people I know have to work pretty hard, though that clearly does not apply to the still-working who rack up high post counts on this board. That group should have an easy transition to FIRE.
Ha