He shouldn't lose his job (6)
I believe the answer is:
keeper
This might be a double definition.
'he shouldn't lose' is the first definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'job' is the second definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'his' is the link.
Can you help me to learn more?
(Other definitions for keeper that I've seen before include "Zoo or park manager" , "Custodian, steward" , "Goal minder" , "penalties will come my way" , "Zoo official" .)