Well he does food service, which is generally really busy during lunch and dinner, and almost dead outside of those times, so even if he's present for 17 hours, I bet there's some downtime. I know when I worked fast food there was times we kept busy by playing stupid games like hide and seek in the restaurant.

Yeah, it's still work, but it's probably not a hard, strenuous job for all 17 hours of the day.