As Skinner put it, when he was a miner and working down in the coal pits, if someone came down stinking of ale then they wouldn't be there long. They would be removed, sent home, and if it was a first offence then docked a day's pay.
That profession isn't alone. I can't think of many where you would be allowed to stagger around, and carry on as normal.
In fact in some you would be considered such a liability, that you would face suspension, termination, and possibly criminal negligence charges.
