With nothing to do, take some paid leave (4)
I believe the answer is:
idle
'with nothing to do' is the definition.
(I've seen this before)
'some paid leave' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'IDLE' can be found hidden inside 'paid leave'.
'take' acts as a link.
(Other definitions for idle that I've seen before include "Indolent" , "Not busy" , "Inactive - lied (anag)" , "Not in active use" , "Futile" .)