Living in job (10)
I believe the answer is:
occupation
I believe this clue is a double definition.
'living' is the first definition.
(thesaurus)
'job' is the second definition.
(I know that job can be written as occupation)
'in' is the link.
(Other definitions for occupation that I've seen before include "Doctor, for instance" , "period of residency" , "Job, profession" , "end of invasion?" , "Calling" .)