I think the key thing is the manager knows.

Many years ago I worked in a place with a good service area and toilets and the female ones flooding. clearly unusable and there were no cleaning staff around.

Needed sorting so, the manager got it done. I remember helping well due to a remark he made afterwards about it being a crap job neither of us should have to have done but sometimes you just needed to get it sorted. I'm sure it's one of the reasons I was promoted to management shortly thereafter...

Unfortunately this type of thing isn't common and most managers I've met would have spent hours on the phone trying to find someone else to do it.

Though I do wonder if union rules came into play here?