Rod Hull used to be popular for such a worker (9)
I believe the answer is:
fisherman
'worker' is the definition.
(I know that fisherman is a type of skilled worker)
'rod hull used to be popular for such a' is the wordplay.
I cannot really understand how this works, but
'rod' could be 'fisher' (rod can mean someone who fishes) and 'fisher' is found within the answer.
'a' could be 'an' and 'an' is present in the answer.
A single letter 'm' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for fisherman that I've seen before include "He casts" , "Fin masher might be all at sea" , "St Peter" , "One possibly catching sole" , "Male angler" .)