Scold a worker for hiding a traitor (6)
I believe the answer is:
berate
'scold' is the definition.
(I know that scold can be written as berate)
'a worker for hiding a traitor' is the wordplay.
'a worker for' becomes 'bee' (I can't justify this - if you can you should believe this answer much more).
'hiding' is an insertion indicator.
'a traitor' becomes 'rat' (I've seen this in another clue).
'bee' enclosing 'rat' is 'BERATE'.
Can you help me to learn more?
(Other definitions for berate that I've seen before include "Have words with" , "Carpet" , "Scold, castigate" , "Reprimand" , "Scold or chide severely" .)