Charity a labourer exposed (7)
I believe the answer is:
handout
'charity' is the definition.
(I know that handout is a type of charity)
'a labourer exposed' is the wordplay.
'a labourer' becomes 'hand' (hand is a kind of labourer).
'exposed' becomes 'out' (out on display).
'hand'+'out'='HANDOUT'
(Other definitions for handout that I've seen before include "Donation" , "charity" , "financial support" , "dole?" , "Publicity" .)