Try a couple of times to accommodate part-time worker (7)
I believe the answer is:
attempt
'try' is the definition.
(I know that try can be written as attempt)
'a couple of times to accommodate part-time worker' is the wordplay.
'couple of' says to double the letters.
'times' becomes 't' (this might be a standard abbreviation I've not previously seen).
'to accommodate' is an insertion indicator.
'part-time worker' becomes 'temp' (a temporary office worker).
't' duplicated is 'tt'.
'tt' going around 'temp' is 'ttempt'.
'a'+'ttempt'='ATTEMPT'
(Other definitions for attempt that I've seen before include "Tackle" , "Shot" , "Stab" , "bid to kill someone" , "Effort; go" .)