Doctor gets no work in slump (5)
I believe the answer is:
droop
'slump' is the definition.
(thesaurus)
'doctor gets no work' is the wordplay.
'doctor' becomes 'dr' ('Dr' can be a synonym of 'doctor').
'gets' says to put letters next to each other.
'no' becomes 'o' (resembles 0 - 'no' can mean 'zero').
'work' becomes 'op' (abbreviation for opus).
'dr'+'o'+'op'='DROOP'
'in' is the link.
(Other definitions for droop that I've seen before include "Go limp" , "Dangle" , "Sag wearily" , "Hang limply" , "languish" .)