Vehicle always needed for job (6)
I believe the answer is:
career
'job' is the definition.
(thesaurus)
'vehicle always needed' is the wordplay.
'vehicle' becomes 'car' (car is a kind of vehicle).
'always' becomes 'eer' (poetic way of saying ever).
'needed' says to put letters next to each other.
'car'+'eer'='CAREER'
'for' acts as a link.
(Other definitions for career that I've seen before include "Not intellectual" , "race" , "Whole of employment" , "Run; calling" , "Hurtle" .)