Upset or cover employment (5)
I believe the answer is:
rouse
'upset' is the definition.
The definition and answer can be both to do with motion as well as being verbs in their base form.
Maybe there's an association between them I don't understand?
'cover employment' is the wordplay.
'cover' becomes 'ro' (I can't justify this - if you can you should believe this answer much more).
'employment' becomes 'use' (how something is used).
'ro'+'use'='ROUSE'
'or' is the link.
Can you help me to learn more?
(Other definitions for rouse that I've seen before include "Agitate" , "Activate, wake up" , "Move" , "Cause to wake up and come alert" , "Waken" .)