Roused about employment (3)
I believe the answer is:
use
'employment' is the definition.
(how something is used)
'roused about' is the wordplay.
'about' indicates the answer is hidden within the clue (the clue goes around or about the answer).
'USE' can be found hidden inside 'roused'.
(Other definitions for use that I've seen before include "particular church liturgy" , "Employ or exploit" , "Function, purpose" , "Employment; utilise" , "Employ - advantage" .)