Party work (6)
I believe the answer is:
labour
I believe this is a double definition.
'party' is the first definition.
(Labour Party is an example)
'work' is the second definition.
(I know that labour is a type of work)
(Other definitions for labour that I've seen before include "Workforce" , "Painful time" , "See 1" , "Productive work" , "End of term" .)