Good-looking employee takes part (8)
I believe the answer is:
handsome
'good-looking' is the definition.
('handsome' can be a synonym of 'good-looking')
'employee takes part' is the wordplay.
'employee' becomes 'hand' (hand is a kind of employee).
'takes' means one lot of letters go next to another.
'part' becomes 'some' (I've seen this before**).
'hand'+'some'='HANDSOME'
(Other definitions for handsome that I've seen before include "large" , "Easy on the eye" , "Nice-looking" , "Well-proportioned" , "Fit" .)