Contemporary with part-timer (4)

I believe the answer is:
temp
'part-timer' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'contemporary with' is the wordplay.
'with' says the answer is hidden in the clue.
'TEMP' is hidden within '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" .)
