Have to follow safety test for record label (6)
I believe the answer is:
motown
'record label' is the definition.
(Motown is an American record label)
'have to follow safety test' is the wordplay.
'have' becomes 'own' (to have something is to own it).
'to follow' is a charade indicator (letters next to each other).
'safety test' becomes 'MOT' (MOT test for a vehicle).
'own' put after 'mot' is 'MOTOWN'.
'for' acts as a link.
(Other definitions for motown that I've seen before include "Detroit musical style" , "Tamla -, US soul music record label" , "Tom won (anag) - music" , "Genre of music originally from Detroit" , "Detroit, the car city" .)