Notice member bending rules (8,6)
I believe the answer is:
marching orders
'notice' is the definition.
(I know that marching orders is a type of pink slip)
'member bending rules' is the wordplay.
'member' becomes 'm' (political abbreviation).
'bending' becomes 'arching' (arching is a kind of bending).
'rules' becomes 'orders' (order is a kind of rule).
'm'+'arching'+'orders'='MARCHING ORDERS'
(Other definitions for marching orders that I've seen before include "may be issued on the parade ground" , "Eg "Best foot forward"" , "Notice" , "Military command" , "what the infantry may be given" .)