A girl worker coming back about one (5)
I believe the answer is:
dinah
'a girl' is the definition.
'worker coming back about one' is the wordplay.
'worker' becomes 'hand' (hand is a kind of worker).
'coming back' says the letters should be written backwards.
'about' indicates putting letters inside.
'one' becomes 'i' (Roman numeral).
'hand' back-to-front is 'dnah'.
'dnah' placed around 'i' is 'DINAH'.
(Other definitions for dinah that I've seen before include "_____ 15+22, singer" , "Washington perhaps" .)