Contemporary with part-timer (4)
I believe the answer is:
temp
'part-timer' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'contemporary with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'TEMP' can be found hidden inside 'contemporary'.
Can you help me to learn more?
(Other definitions for temp that I've seen before include "Short-term office worker" , "Transitory office worker" , "relief" , "N on-permanent worker" , "Non-full time employee" .)