Some servant asking for a job (4)
I believe the answer is:
task
'a job' is the definition.
(I know that job can be written as task)
'some servant asking for' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'TASK' is hidden within 'servant asking for'.
(Other definitions for task that I've seen before include "Job, undertaking" , "Chore, job." , "exercise" , "Set piece of work" , "Difficult piece of work" .)