Slight possibility that you won't be working? (3,6)
I believe the answer is:
off chance
'slight possibility that you won't be working?' is the definition.
'off chance' can be an answer for 'slight possibility' (I've seen this in another clue). I am unsure of the remainder of the definition.
'slight possibility' is the wordplay.
'slight' becomes 'off' (I can't justify this - if you can you should believe this answer much more).
'possibility' becomes 'chance' (chance is a kind of possibility).
'off'+'chance'='OFF-CHANCE'
Can you help me to learn more?
(Other definitions for off chance that I've seen before include "Not much likelihood" , "Just a slight possibility" , "Vague possibility" , "Remote possibility" .)