The person who really hates working at their job and treats all their fellow employees like crap. They usually start lots of fight, yell a lot, and never ever smile or have anything good to say.
Husband: Well they put me working with Jim and he's my department's work jerk. He hates everything and he hates me for no reason. I mean I just started!
There's a new secretary on staff. You can't keep your eyes off of her and you can't stop thinking about her. She just walked by and gave to a hard-on. Now you have to go to the men's room and squeeze out a Work Jerk.
When for any reason, you feel inclined to jack off at work, be it out of boredom, for pleasure, to provide a sperm sample for reproductive purposes or for sperm donation for profit, you are performing what shall hence forth be know as the "work-jerk".
When I have a half hour between clients, I do a quick work-jerk to relievetension