Professionally useless

The kind of coworker who is completely useless to any component of their job. They accomplish nothing when they’re there and you’re actually better off without them. This person is worthless to the job that other departments know about them too. He may also fake being sick to get out of work. All they’re good at is taking up oxygen. They are the weakest link

Mike: where is joe?

Sam: he’s out sick again.

Mike: wasn’t he just sick like a week ago?

Sam: yeah he was.

Mike: that guy is professionally useless