Working for the utility as a Temporary full time interim worker with no benefits and no vacation to get into the company years ago I worked in a small town head quarters with a garage. We serviced and repaired the line trucks, trouble trucks, cars and pickups, cranes what ever the company could bring the three of us that worked there. After working like dogs thru the winter spring came in easy and the work slowed, I washed windows, cleaned the floor lift pits, even got some of the dysfunctional tools working better while the day foreman was on vacation.
He looked out the windows three days after getting back said "Damn, who cleaned the window to the fuel island, now they can see I am screwing off" never touched them again!! He later admitted he had considered doing the very same thing but just as got the gumption a call would come to go on a road call.