Businessman's initial stretch for violation (6)
I believe the answer is:
breach
'violation' is the definition.
(I've seen this before)
'businessman's initial stretch' is the wordplay.
'businessman's initial' becomes 'b' (I can't explain this - if you can you should give a lot more credence to this answer).
'stretch' becomes 'reach' (synonyms).
'b'+'reach'='BREACH'
'for' is the link.
Can you help me to learn more?
(Other definitions for breach that I've seen before include "Failure to follow the rules" , "part of firearm, say" , "Non-observance" , "The breaking of a law or agreement" , "Gap (in a wall/barrier)" .)