Mo. Rev. Stat. § 621.165
Upon receipt of a written complaint filed pursuant to section 536.050, RSMo, the administrative hearing commission shall as soon as practicable thereafter give notice of such complaint and the date upon which the hearing will be held by delivery of a copy, or by certified mail, of such complaint and notice both to the office of the agency whose authority is challenged and to the complainant.
(L. 1978 S.B. 661)
*Transferred 1984; formerly 161.334