Toy sat on by officers when everyone’s out (7,6)
I believe the answer is:
general strike
'when everyone's out' is the definition.
(being out can mean being on strike)
'toy sat on by officers' is the wordplay.
'toy sat on' becomes 'trike' (I can't explain this - if you can you should believe this answer much more).
'by' means one lot of letters go next to another.
'officers' becomes 'generals' (general is a kind of officer).
'trike' put after 'generals' is 'GENERAL STRIKE'.
Can you help me to learn more?
(Other definitions for general strike that I've seen before include "Everybody out!" , "all-out effort" , "National work stoppage" , "When everyone's out" , "national crisis" .)