Charlie’s new salary reduced pressure over work (10)
I believe the answer is:
nincompoop
'charlie's' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's an association between them I don't understand?
'new salary reduced pressure over work' is the wordplay.
'new salary' becomes 'nincom' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'reduced pressure' becomes 'p' (abbreviation; 'reduced' suggests an abbreviation).
'over' becomes 'o' (cricket abbreviation).
'work' becomes 'op' (common abbreviation for 'opus').
'nincom'+'p'+'o'+'op'='NINCOMPOOP'
Can you help me to learn more?
(Other definitions for nincompoop that I've seen before include "jerk" , "dunce" , "Wally" , "Stupid person" , "Foolish person" .)