University course right for employer (4)
I believe the answer is:
user
'employer' is the definition.
(thesaurus)
'university course right' is the wordplay.
'university' becomes 'u'.
'course' becomes 'se'.
'right' becomes 'r' (common abbreviation).
'u'+'se'+'r'='USER'
'for' acts as a link.
(Other definitions for user that I've seen before include "Ruse for employer" , "Junkie's" , "Manipulator" , "Drug addict (colloq.)" , "One getting benefit from" .)