Dubious results upset grasping employers (5)
I believe the answer is:
users
'employers' is the definition.
(I've seen this before)
'dubious results upset grasping' is the wordplay.
'USERS' is hidden backwards within the letters.
But, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for users that I've seen before include "People who take drugs" , "Drug addicts" , "Customers" , "Drug takers" , "Operators" .)