Business takeover (10)
I believe the answer is:
occupation
This clue is a double definition.
'business' is the first definition.
(I've seen this before)
'takeover' is the second definition.
(thesaurus)
(Other definitions for occupation that I've seen before include "period of residency" , "Job, profession" , "Doctor, for instance" , "Calling" , "the seizure and control of a foreign territory" .)