In addition to any other penalty provided by law, any person, firm, or corporation which violates an order of the director after it has become final, and while such order is in effect, shall, upon proof thereof to the satisfaction of the court, forfeit and pay to the State of South Dakota a sum not to exceed two hundred fifty dollars which may be recovered in a civil action, except that if such violation is found to be willful, the amount of such penalty shall be a sum not to exceed one thousand dollars.
SDCL 58-19-37