The state of an employee who has submitted their retirement notice and maintains the facade of working by showing up during office hours. This person exerts no effort and yields no production while on the clock.
When Gary was not chosen for the select sales team, he was told it was because he was "pretired" and considered "deadweight".
Trialling retirement. Typically used when someone has the means to retire and wishes to see whether it suits them, but wants to leave the door open, to rejoining the workforce, should things not work out.
Bob pretired after he sold his company, aged 55. However, after only 6 months he was bored (playing golf, fishing and potteringin the garden) and rejoined workforce.