Works hard and saves, hiding the money (6)
I believe the answer is:
slaves
'works hard' is the definition.
(I've seen this in another clue)
'saves hiding the money' is the wordplay.
'hiding' is an insertion indicator.
'the money' becomes 'l' (L can mean 'pounds').
'saves' placed around 'l' is 'SLAVES'.
'and' acts as a link.
(Other definitions for slaves that I've seen before include "Humans owned by humans" , "Servants with no freedom" .)