Honoured officer is bearing down on worker toeing the line (8)
I believe the answer is:
obeisant
'toeing the line' is the definition.
'honoured officer is bearing down on worker' is the wordplay.
'honoured officer' becomes 'obe' (Order of the British Empire).
'bearing down on' is a charade indicator (letters next to each other).
'worker' becomes 'ant' (worker is a type of ant).
'obe'+'is'+'ant'='OBEISANT'
(Other definitions for obeisant that I've seen before include "showing deference" , "Showing deferential respect" , "obsequious" , "Curtsying" , "Being submissive" .)