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?"