Hospital workers finding instruction isn't honest (9)
I believe the answer is:
orderlies
'hospital workers' is the definition.
(I've seen this before)
'instruction isn't honest' is the wordplay.
'instruction' becomes 'order' (an order to do something).
'isn't honest' becomes 'lies' (tells lies).
'order'+'lies'='ORDERLIES'
'finding' acts as a link.
(Other definitions for orderlies that I've seen before include "Hospital attendants or soldiers working for officers" , "Hospital workers" , "Solderer I join as soldiers who do errands for officers" , "Soldiers attending superior officers" , "Servants" .)