Feeble fellow who extracts benefits at work? (7)
I believe the answer is:
milksop
'feeble fellow' is the definition.
'milksop' can be an answer for 'fellow' (I have seen 'Unmanly fellow ' mean 'milksop' so perhaps 'fellow' could also mean 'milksop'). I am not certain of the 'feeble' bit.
'extracts benefits at work?' is the wordplay.
I cannot quite understand how this works, but
'extracts' could be 'milks' (milking is a kind of extracting) and 'milks' is found within the answer.
'work?' could be 'op' (abbreviation for opus) and 'op' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'who' acts as a link.
Can you help me to learn more?
(Other definitions for milksop that I've seen before include "Feeble youth" , "Wimpish fellow" , "Weak type" , "Feeble male" , "Cissy (informal) -- limps OK (anag)" .)