To the people who asked:
There's nothing in the Quran about not touching pork, but there are hadiths and sunnahs that state both that using pork byproducts (oil for lamps, etc) and profitting from pork are also forbidden.
So, in effect, a hard-line muslim could take the stance that by selling pork as an employee, he would be profitting from a forbidden activity. That said, any muslim scholar with half a brain would tell him that whether he sells the pork or his coworker does, the profits from that sale still indirectly funds his paycheck, and that he should not under any circumstances be working at that store.
And I agree--if you can't do the job, you shouldn't have applied.