After revolution, unions getting share (3)
I believe the answer is:
cut
'share' is the definition.
(I know that cut is a type of share)
'after revolution unions' is the wordplay.
'after revolution' shows that the letters should be reversed in order (letters revolve back).
'unions' becomes 'tuc' (Trades Union Congress).
'tuc' reversed gives 'CUT'.
'getting' is the link.
(Other definitions for cut that I've seen before include "Shorten; remove" , "Make an incision" , "Shorten; (one's) share" , "dropped" , "Abbreviate" .)