Mo. Rev. Stat. § 324.077
The board may issue a limited permit, upon the payment of applicable fees and completion of the required application, to a person who sufficiently provides proof of eligibility to set for the first available examination upon completion of all other necessary requirements for certification by the certifying entity. The limited permit shall allow the person to practice occupational therapy under the supervision of a person currently licensed pursuant to sections 324.050 to 324.089. A limited permit shall only be effective up to but not to exceed the time the results of the second available examination are received by the board unless the person successfully passes the examination in which instance the limited permit shall remain valid for an additional sixty days.
§ 324.077, RSMo