Force bar staff to accept article (8)
I believe the answer is:
railroad
'force' is the definition.
(railroading is a kind of forcing)
'bar staff to accept article' is the wordplay.
'bar' becomes 'rail' (rail is a kind of bar**).
'staff' becomes 'rod' (I've seen this before).
'to accept' means one lot of letters goes inside another.
'article' becomes 'a' (indefinite article).
'rod' enclosing 'a' is 'road'.
'rail'+'road'='RAILROAD'
(Other definitions for railroad that I've seen before include "Bully" , "US term for train line" , "Unfairly force into decision - way for train" , "[DRAGOON]" , "Rush (someone) into doing something" .)