Student workers’ association given support on course (5)
I believe the answer is:
tutee
'student' is the definition.
(I've seen this before)
'workers' association given support on course' is the wordplay.
'workers' association' becomes 'TU' (abbreviation for trade union).
'given' says to put letters next to each other.
'support on course' becomes 'tee' (golf tee on a golf course).
'tu'+'tee'='TUTEE'
(Other definitions for tutee that I've seen before include "One learns from a personal teacher" , "Student, pupil" .)