His job is to dig out fresh papers (6)
I believe the answer is:
sapper
'his job is to dig out' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'fresh papers' is the wordplay.
'fresh' is an anagram indicator.
'papers' with letters rearranged gives 'SAPPER'.
Can you help me to learn more?
(Other definitions for sapper that I've seen before include "Military miner" , "Writer" , "Private soldier in the Royal Engineers" , "Soldier who digs trenches" , "Private in the British Royal Engineers" .)