Drink nothing having turned up for work (4)
I believe the answer is:
opus
'work' is the definition.
(I've seen this before)
'drink nothing having turned up' is the wordplay.
'drink' becomes 'sup' (I've seen this before**).
'nothing' becomes 'o' (looks like zero - 0).
'having turned up' is a reversal indicator.
'sup'+'o'='supo'
'supo' written backwards gives 'OPUS'.
'for' is the link.
(Other definitions for opus that I've seen before include "Soup (anag.)" , "Major work" , "A Latin work" , "Musical composition in the soup" , "(Numbered) musical composition" .)