Fellow in no condition to work on a tough paper (7)
I believe the answer is:
manilla
'paper' is the definition.
(I know that manilla is a type of paper)
'fellow in no condition to work on a tough' is the wordplay.
I cannot really see how this works, but
'fellow' could be 'man' (fellow can mean a man) and 'man' is found within the answer.
'condition' could be 'ill' (ill is a kind of condition) and 'ill' is present in the answer.
'a' is within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for manilla that I've seen before include "Bracelet made of metal" , "West African bracelet; sounds like capital of thirty across" , "type of brown paper" , "cigar" , "Hemp fibre" .)