Bullies start to target your workers (7)
I believe the answer is:
tyrants
'bullies' is the definition.
(I've seen this before)
'start to target your workers' is the wordplay.
'start to' indicates taking the first letters.
'your' becomes 'yr' (shortened version of 'your' in eg textspeak).
'workers' becomes 'ants' (worker ants).
The first letter of 'target' is 't'.
't'+'yr'+'ants'='TYRANTS'
(Other definitions for tyrants that I've seen before include "Cruel people" , "Despots, oppressors" , "Powerful people" , "Cruel and oppressive dictators" , "Bullies" .)