Part-time worker left eastern place of worship (6)
I believe the answer is:
temple
'place of worship' is the definition.
(temple is a kind of place of worship)
'part-time worker left eastern' is the wordplay.
'part-time worker' becomes 'temp' (a temporary office worker).
'left' becomes 'l' (common abbreviation).
'eastern' becomes 'e'.
'temp'+'l'+'e'='TEMPLE'
(Other definitions for temple that I've seen before include "'Shirley ..., child movie star (6)'" , "centre of interest?" , "Coy, composed" , "Once an archbishop" , "child actress ..." .)