Missouri Revised Statutes Title IV. Executive Branch § 34.150. Violation by any department renders contract void--liability of head of department

Whenever any department or agency of the state government shall purchase or contract for any supplies, materials, equipment or contractual services contrary to the provisions of this chapter or the rules and regulations made thereunder, such order or contract shall be void and of no effect. The head of such department or agency shall be personally liable for the costs of any order or contract the head of such department or agency knowingly authorized in violation of this chapter and, if already paid for out of state funds, the amount thereof may be recovered in the name of the state in an appropriate action instituted therefor.