Labour, chore (4)
I believe the answer is:
task
I believe this clue is a double definition.
'labour' is the first definition.
(both can mean a chore)
'chore' is the second definition.
(I know that chore can be written as task)
(Other definitions for task that I've seen before include "Burden with work" , "Job, undertaking" , "Assignment" , "Set piece of work" , "commission" .)