Field worker finding insect on vegetables (7)
I believe the answer is:
peasant
'field worker' is the definition.
(I've seen this in another clue)
'insect on vegetables' is the wordplay.
'insect' becomes 'ant' (ant is a kind of insect).
'on' says to put letters next to each other.
'vegetables' becomes 'peas' (I've seen this before).
'ant' after 'peas' is 'PEASANT'.
'finding' is the link.
(Other definitions for peasant that I've seen before include "One from the country" , "Poor farmworker" , "Rural person of low class" , "rude fellow" , "Lowly 20 worker" .)