It's rude to poop exclusively at work.
Ron is at home, about to go to work when he realizes he has to use the bathroom, he has lately been trying to last until work.
Ron wants to poop.
Ron decides to poop in his own toilet for a change.
Ron decides to wait to get to work, so he can get paid for it.
Ron is more efficient at work, not wasting hours on the clock.
Ron's boss notices that he's been doing this a lot lately, and yells at him for it.