Mo. Rev. Stat. § 622.380
If a person subpoenaed to appear before the division or an administrative law judge fails to obey the command of such subpoena, without reasonable cause, or if a person in attendance upon the division or an administrative law judge shall, without a reasonable cause, refuse to be sworn or to be examined, or answer a question, or to produce a book or paper when ordered to do so by the division or an administrative law judge, or to subscribe or swear to the person's deposition after it has been correctly produced in writing, such person shall be deemed guilty of a misdemeanor, and be punished by a fine of not less than one hundred dollars nor more than one thousand dollars or by imprisonment in the county jail not to exceed one year, or by both such fine and imprisonment, and may be prosecuted therefor in any court of competent jurisdiction; and in case of a continuing violation each day's continuance thereof shall be and be deemed to be a separate and distinct offense.
§ 622.380, RSMo