The minimum wages fixed by the director, as provided in this article, shall be the minimum wages paid to the employees, and the payment to such employees of a wage less than the minimum so fixed is unlawful, and every employer or other person who, individually or as an officer, agent, or employee of a corporation or other person, pays or causes to be paid to any such employee a wage less than the minimum is guilty of a misdemeanor and, upon conviction thereof, shall be punished by a fine of not less than one hundred dollars nor more than five hundred dollars, or by imprisonment in the county jail for not less than thirty days nor more than one year, or by both such fine and imprisonment.