Devon formerly worked at Dunder-Mifflin.
Devon is briefly seen working in the background several times. When Michael instigates Diversity Day 2, Devon is seen, alone on a blacony taking a smoke break, in a deleted scene with a "West Nile" card on his forehead.
Due to downsizing, Michael was forced to fire somebody by the end of the month. Although he first attempted to fire Creed, Creed convinced Michael that Devon was a worse worker and that Devon should be fired instead. As a result, Devon, dressed as a hobo for Halloween, was fired by Michael. Devon did not take his firing lightly and invited everybody except for Michael, Creed, Dwight, and Angela to come to Poor Richard's with him. Before heading to the bar, however, Devon smashed a pumpkin over Michael's windshield.
In deleted scenes from Valentine's Day, Devon, who has apparently stayed true to his Halloween costume as he is now a bum, encounters Michael on the streets of New York. He yells at Michael and chases him down the block. Afterwards, a typically clueless Michael reflects on how good it was to see Devon again.