Youth’s rise incorporating state benefit (10)
I believe the answer is:
adolescent
'youth's' is the definition.
(I've seen this before)
'rise incorporating state benefit' is the wordplay.
'rise' becomes 'ascent' (synonyms).
'incorporating' is an insertion indicator.
'state benefit' becomes 'dole'.
'ascent' placed around 'dole' is 'ADOLESCENT'.
(Other definitions for adolescent that I've seen before include "One growing" , "Immature" , "Person in child-adult transition" , "At the stage between childhood and maturity" , "Youngster" .)