Lively movement can be a job! (8)
I believe the answer is:
activity
This clue might be a double definition.
'lively movement' is the first definition.
'activity' can be an answer for 'movement' (I've seen this before). I am not sure about the 'lively' bit.
'a job' is the second definition.
(thesaurus)
'can be' is the link.
Can you help me to learn more?
(Other definitions for activity that I've seen before include "Occupation or exercise" , "Recreational pursuit" , "Pastime or bustle" , "Busy movement" , "Hobby, pastime" .)