Unvarying way worker supports scam (8)
I believe the answer is:
constant
'unvarying' is the definition.
(I know that unvarying can be written as constant)
'way worker supports scam' is the wordplay.
'way' becomes 'st' (abbreviation for street).
'worker' becomes 'ant' (worker is a type of ant).
'supports' is a charade indicator (letters next to each other) (bottom letters provide a support for the top ones).
'scam' becomes 'con' (both can mean a fraudulent scheme).
'st'+'ant'='stant'
'stant' after 'con' is 'CONSTANT'.
(Other definitions for constant that I've seen before include "staying the same" , "Regular" , "Steady and unceasing" , "Faithful - unchanging" , "Perpetual" .)