No vegetarian's likely to be dismissed (3,3,4)
I believe the answer is:
get the chop
'be dismissed' is the definition.
(to get the chop is to get fired or dismissed)
I cannot understand how the remainder of the clue works.
(Other definitions for get the chop that I've seen before include "Lose job" , "Collect one's P45" , "what the butcher might do" , "Be sacked" , "Sack" .)