These are day-to-day contracts. I don't think you understand how temporary they are. As for flexibility of hours on interim contracts, it's nonexistent, becaus

These are day-to-day contracts. I don't think you understand how temporary they are. As for flexibility of hours on interim contracts, it's nonexistent, because employers don't want to give that. They'll hire whoever just complies with their hours and usually not even allow for swaps. I've even been on the other side of this. Allowing hour swaps leads to first the impression of preferential treatment, then actual preferential treatment (because "he's doing it"), then fights, then a total disaster.