When I was an RTD, I watched a guy pee himself because management wouldn't let him off the PM reload to relieve himself. There was bad weather, a Postive Pull, and a lot of late couriers coming-in with freight. I told him to go around the corner and pee behind the CTV, but this guy was under the watchful eye of his manager to make sure he didn't leave for one second. Next thing I know, this guy has a large dark stain spreading around the from of his pants. Nobody said a thing, because they didn't want to embarass him further.
Rarely, is there any water anywhere near where trailer/can loading is taking place, and it's by design. Stopping work to have some water takes away from productivity, so the water cooler or fountain is off in the break room or somewhere else, NOT where it actually needs to be. Oh, and when it's 95 outside, it's more like 120 degrees in the cans or the trailer, just in case you didn't know.
Why treat someone like a human being when you don't have to?