Sick note doctor put in resting place (6)
I believe the answer is:
entomb
'put in resting place' is the definition.
(put into a entomb)
'sick note doctor' is the wordplay.
'sick' indicates an anagram.
'doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus).
'note' anagrammed gives 'ento'.
'ento'+'mb'='ENTOMB'
(Other definitions for entomb that I've seen before include "Place in a grave" , "Incarcerate" , "Put in a grave" , "Bury in vault" , "to finish Aida, for example" .)