One who works for his deserts (6)
I believe the answer is:
earner
This clue could be a double definition.
'one who works' is the first definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'his deserts' is the second definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'for' is the link.
Can you help me to learn more?
(Other definitions for earner that I've seen before include "Someone paid for work" , "Breadwinner" , "Employed person" , "One receiving income (for work)" , "One bringing in wage" .)