Not demanding extra requirement for film (4,5)
I believe the answer is:
easy rider
'film' is the definition.
(I've seen this before)
'not demanding extra requirement' is the wordplay.
'not demanding' becomes 'easy' (I've seen this in another clue).
'extra requirement' becomes 'rider' (extra proviso on a contract).
'easy'+'rider'='EASY RIDER'
'for' is the link.
(Other definitions for easy rider that I've seen before include "Picture" , "Film about motor cyclists' travels" , "1969 road movie" , "Peter Fonda film" , "counter-culture movie" .)