Foe-Worker
A co-worker that is hated by antother co-worker openly.
Marcus left a pair of underwear on his foe-worker Kristi's car.
foe-worker
That person at work who you dislike. Maybe they passed you up for a promotion, maybe they're just annoying - either way they're your foe-worker.
"What do you mean I have to work on that project with Emma? Doesn't everyone know we're foe-workers since she called me out for expensing a coffee?"