Application for employment (3)
I believe the answer is:
use
I believe this is a double definition.
'application' is the first definition.
(I've seen this in other clues)
'employment' is the second definition.
('use' can be a synonym of 'employment')
'for' acts as a link.
(Other definitions for use that I've seen before include "Apply, employ" , "Practise" , "Bring into play" , "Manipulate" , "Exploit; custom" .)