Income from grannies at work? (8)
I believe the answer is:
earnings
'income' is the definition.
(I know that earnings is a type of income)
'grannies at work?' is the wordplay.
'at work?' indicates anagramming the letters (I've seen 'at work' mean this).
'grannies' is an anagram of 'EARNINGS'.
'from' is the link.
(Other definitions for earnings that I've seen before include "Salaries etc" , "Profits from a venture" , "Moneys brought in for grannies" , "Returns received for work" , "Moneys received for grannies" .)