Worker gets fine for complaint (4)
I believe the answer is:
beef
'complaint' is the definition.
(beef can mean a complaint or objection)
'worker gets fine' is the wordplay.
'worker' becomes 'bee' (a worker bee).
'gets' says to put letters next to each other.
'fine' becomes 'f' (abbreviation).
'bee'+'f'='BEEF'
'for' acts as a link.
(Other definitions for beef that I've seen before include "Complaint; strength" , "Meat - complaint" , "Grumble over cattle meat?" , "Grumble - muscle" , "Brawn; complaint" .)