Make do: work on collecting income support (9)
I believe the answer is:
improvise
'make do' is the definition.
(I've seen this before)
'work on collecting income support' is the wordplay.
'work on' becomes 'improve' (I can't explain this - if you can you should believe this answer much more).
'collecting' is an insertion indicator.
'income support' becomes 'IS' (abbreviation for income support).
'improve' enclosing 'is' is 'IMPROVISE'.
Can you help me to learn more?
(Other definitions for improvise that I've seen before include "Create without preparation" , "play by ear" , "Vamp" , "ad lib" , "wing it" .)