Work, profession (10)
I believe the answer is:
employment
I believe this clue is a double definition.
'work' is the first definition.
(I know that work can be written as employment)
'profession' is the second definition.
(I know that profession can be written as employment)
(Other definitions for employment that I've seen before include "Paid work" , "Utilization" , "The utilisation of something" , "A person's work or profession" .)