A person works at a shop that sells Nitrous cartridges that are frequently used for illicit purposes, but do have legitimate uses.
This person feels that it is wrong to sell these cartridges to anyone.
When a customer comes in and asks for the cartridges he says that they must go somewhere else or come back when he isn't there.
The owner of the establishment doesn't like that his employee isn't selling the product, but doesn't make a stink about it because other than this one "feature" he is otherwise a good employee.
Should the government mandate that the employee be fired because he isn't "doing his job" by selling product that they have in stock?
Why does the answer change when you subsititute Morning After Pills for Nitrous Cartridges?