The money you are paid for holding political office is an example of emolument.
Origin of emolumentMiddle English ; from Classical Latin emolumentum, the result of exertion, gain, profit ; from emolere, to grind out ; from e-, out + molere, to grind: see mill
Origin of emolumentMiddle English, from Latin &emacron;molumentum, gain, originally a miller's fee for grinding grain, from &emacron;molere, to grind out : &emacron;-, ex-, ex- + molere, to grind; see mel&schwa;- in Indo-European roots.
From Old French emolument, from Latin emolumentum
emolument - Legal Definition