Each gang around noon receiving payment for work (7)
I believe the answer is:
earning
'receiving payment for work' is the definition.
(earning money at work)
'each gang around noon' is the wordplay.
'each' becomes 'ea' (abbreviation).
'gang' becomes 'ring' (synonyms).
'around' indicates putting letters inside.
'noon' becomes 'n'.
'ring' placed around 'n' is 'rning'.
'ea'+'rning'='EARNING'
(Other definitions for earning that I've seen before include "Being paid for work" , "Bringing in money" , "Deserving" , "Getting" , "Realising" .)