Confront model put to work (6)
I believe the answer is:
oppose
'confront' is the definition.
(I know that oppose is a type of confront)
'model put to work' is the wordplay.
'model' becomes 'pose' (model can mean to pose).
'put to' is a charade indicator (letters next to each other).
'work' becomes 'op' (common abbreviation for 'opus').
'pose' after 'op' is 'OPPOSE'.
(Other definitions for oppose that I've seen before include "Argue against" , "Bar" , "face" , "'Refute, stand against (6)'" , "Resist, contend with" .)