Traveller to work (8)
I believe the answer is:
commuter
'traveller to work' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for commuter that I've seen before include "Person who regularly travels some distance to work" , "One travelling to work" , "traveller of some standing, perhaps?" , "One who travels some distance to work daily" , "Person travelling some distance to work" .)