My dad works at royal mail
hes about middle management
he manages any number of people from 5-200 depending on what hes doing (more at xmas)
The problem with temps is that they dont really care about the job cos its just a temp job ( cant blame them really)
My dad has to fire so many temps every christmas (hes never fired a permanent employee (except for one guy that was stealing things))

and anyone that does handle mail is on the bottom rung, IE they haven't been promoted, so you never get the best people handling the post, its like at mcdonalds on the tills :p (anyone that is good at the job would either be promoted or get a job else where)