On Sundays, they'd have the closer come in an hour earlier so you still got 4.5 hours to get everything done. The only person who got an hour cut was the mid, who had to make sure everything on their end was done by 4pm instead of 5pm.
ETA: When I first started at Food Ave, my hands went through a "molting" stage where all the skin dried up and flaked off due to dryness, twice. After that, though, I was fine. The only ongoing problems I would have from the water would be paper cuts not healing due to constant submersion...it was pretty bad, and painful. Glad I don't have that problem anymore.
But, just in case you don't already know, if you use Oven Degreaser, WEAR GLOVES. I'm serious. Even the tiniest bit on your skin will strip and burn and it is so painful. Your finger tips sound like what mine were like before I realized exactly how potent the degreaser was, and I scrubbed one of the bread stick warmer componants with my bare hands. I lost about three layers of skin on all my fingertips and they were shiny, tight and cracked for ages.
So yeah, wear gloves every time you touch that stuff, and if you get any on your skin, wash it off IMMEDIATELY. If you know you're going to be using degreaser a lot, like if you're cleaning the oven, dress appropriately. When I'd come in early to clean the oven I'd wear thick pants and a high-collared shirt layered over a long-sleeved shirt. Because yes, I'd get degreaser accidentally on my chest and neck and that is kind of awkward to rinse off in an efficient manner, lol.