Good-looking worker? A bit (8)
I believe the answer is:
handsome
'good-looking' is the definition.
(I know that good-looking can be written as handsome)
'worker? a bit' is the wordplay.
'worker?' becomes 'hand' (hand is a kind of worker).
'a bit' becomes 'some' (I've seen this in other clues).
'hand'+'some'='HANDSOME'
(Other definitions for handsome that I've seen before include "Good-looking, as a male say" , "large" , "Attractive, liberal" , "Striking" , "Good-looking or generous" .)