Mo. Rev. Stat. § 516.140: What actions within two years.

Within two years: an action for libel, slander, injurious falsehood, assault, battery, false imprisonment, criminal conversation, malicious prosecution or actions brought under section 290.140. An action by an employee for the payment of unpaid minimum wages, unpaid overtime compensation or liquidated damages by reason of the nonpayment of minimum wages or overtime compensation, and for the recovery of any amount under and by virtue of the provisions of the Fair Labor Standards Act of 1938 and amendments thereto, such act being an act of Congress, shall be brought within two years after the cause accrued.