At a big telecom we had an employee that maybe closed 10 tickets in two years. He was the highest paid team member (as reported by our director) and worked remotely from an RV in Oklahoma. When he was finally discovered by our director, he was fired and his immediate manager was fired.
He was a long time employee with a legacy job title "wintel engineer." A transformational ex-IBM director was finally brave enough to PIP and fire him. I think he was mostly retired while putting in 8 hours of work a quarter.