Some work held over before insect repelled in Scottish village (6)
I believe the answer is:
gretna
'scottish village' is the definition.
(village in Scotland)
'some work held over before' is the wordplay.
'some work' becomes 'gr' (I can't explain this - if you can you should believe this answer much more).
'held over' says the letters should be written in reverse.
'before' becomes 'ante' (I've seen this before).
'ante' back-to-front is 'etna'.
'gr'+'etna'='GRETNA'
'insect repelled in' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
(Other definitions for gretna that I've seen before include "border village" , "... Green, for elopers" , "Green for eloping couples" , "Scottish town" .)