Are the workers behind him? (7)
I believe the answer is:
foreman
'are the workers behind him?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'workers behind him?' is the wordplay.
'workers' becomes 'fore' (I can't justify this - if you can you should believe this answer much more).
'behind' is a charade indicator (letters next to each other).
'him?' becomes 'man'.
'fore'+'man'='FOREMAN'
Can you help me to learn more?
(Other definitions for foreman that I've seen before include "Gaffer, boss" , "Gaffer, overseer" , "Male supervisor" , "Fellow in charge" , "Charge hand" .)