Reserves unlikely to find a place where work's paid for (9)
I believe the answer is:
bookstall
'a place where work's paid for' is the definition.
(somewhere a literary work might be purchased)
'reserves unlikely' is the wordplay.
'reserves' becomes 'books' ('book' can be a synonym of 'reserve').
'unlikely' becomes 'tall' (I've seen this before).
'books'+'tall'='BOOKSTALL'
'to find' acts as a link.
(Other definitions for bookstall that I've seen before include "Source of reading material" , "A station shop" , "kiosk" .)