Consequence of workers cutting vehicle test (6)
I believe the answer is:
moment
'consequence' is the definition.
(I know that consequence can be written as moment)
'workers cutting vehicle test' is the wordplay.
'workers' becomes 'men' (men can mean staff or employees).
'cutting' means one lot of letters goes inside another (some letters cut their way into a word).
'vehicle test' becomes 'MOT' (MOT test).
'men' put into 'mot' is 'MOMENT'.
'of' is the link.
(Other definitions for moment that I've seen before include "Importance - point in time" , "Second, flash" , "Instant - importance" , "Significance; minute" , "tick" .)