Expert forced to accept work (9)
I believe the answer is:
practised
'expert' is the definition.
(I've seen this before)
'forced to accept work' is the wordplay.
'forced' becomes 'prised' (I've seen this before).
'to accept' indicates putting letters inside.
'work' becomes 'act' ('act' can be a synonym of 'work'**).
'prised' placed around 'act' is 'PRACTISED'.
(Other definitions for practised that I've seen before include "Expert" , "Learned by repetition" , "Carried out or rehearsed" .)