It shall be unlawful for any common carrier to grant, or for any consignee or consignor to receive, any rebate or drawback, or enter into any arrangement whereby such consignee or consignor shall directly or indirectly receive a lower rate for transporting freight than the rate fixed by the orders of this commission or the published schedules. It shall be unlawful for any common carrier, or any agent or employee thereof, or for any person, firm or corporation to enter into any secret agreement with any firm, person or corporation for the purpose of giving any firm, person or corporation any special privileges, favors or discriminations in favor of such firm, person, or corporation.
K.S.A. 66-154