Protest without working -- getting warning (6,6)
I believe the answer is:
object lesson
'warning' is the definition.
(I know that object lesson is a type of warning)
'protest without working' is the wordplay.
'protest' becomes 'object' (as in objecting to something).
'without' becomes 'less' (I've seen this in another clue).
'working' becomes 'on' (on can mean working or activated).
'object'+'less'+'on'='OBJECT LESSON'
'getting' acts as a link.
(Other definitions for object lesson that I've seen before include "Instructive experience" , "shows what one should do" , "Example typifying a principle" , "What may be striking" , "punishment intended as a warning to others?" .)