Worried about party after NEC story (8)
I believe the answer is:
anecdote
'story' is the definition.
(I've seen this before)
'worried about party after nec' is the wordplay.
'worried' becomes 'ate' (something worrying may eat someone up).
'about' is an insertion indicator.
'party' becomes 'do' (do is a kind of party).
'after' is a charade indicator (letters next to each other).
'do' put after 'nec' is 'necdo'.
'ate' placed around 'necdo' is 'ANECDOTE'.
(Other definitions for anecdote that I've seen before include "Reminiscence, story" , "A short tale, usually true" , "Neat code (anag.)" , "Pithy account of an incident" , "Account regarded as unreliable" .)