Revolutionary oral employment contract (6)
I believe the answer is:
reduce
'contract' is the definition.
(synonyms)
'revolutionary oral employment' is the wordplay.
I cannot quite see how this works, but
'revolutionary' could be 'red' and 'red' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for reduce that I've seen before include "Make smaller or take off weight" , "Cut down, lose weight" , "Boil down or cut back" , "Slim down or discount" , "'Cut down, abridge (6)'" .)