Finance report on uncompleted work (7)
I believe the answer is:
backlog
'uncompleted work' is the definition.
(as in a backlog of work)
'finance report on' is the wordplay.
'finance' becomes 'back' (backing is a kind of financing).
'report' becomes 'log'.
'on' is a charade indicator (letters next to each other).
'back'+'log'='BACKLOG'
(Other definitions for backlog that I've seen before include "Work awaiting attention" , "An arrear as of work" , "Work yet to be done" , "Unfinished business" , "Amount of uncompleted work" .)