Spooner's Canadian diver could possibly have a second job (9)
I believe the answer is:
moonlight
'job' is the definition.
The definition and answer can be both to do with social activities as well as being verbs in their base form.
Maybe you can see a link between them that I can't see?
'spooner's canadian diver could possibly have a second' is the wordplay.
I cannot quite see how this works, but
'second' could be 'mo' (both are short periods of time) and 'mo' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for moonlight that I've seen before include "Secretly work" , "Work in a secondary job" , "Natural (and romantic?) illumination" , "name for sonata" , "Night-time illumination" .)