Missouri Revised Statutes Title XXII. Occupations and Professions § 329.255. Violation of law--penalty

(1) Offering to engage or engaging in the performance of any acts or practices for which a certificate of registration or authority, permit or license is required by this chapter upon a showing that such acts or practices were performed or offered to be performed without a certificate of registration or authority, permit or license; or

(2) Engaging in any practice or business authorized by a certificate of registration or authority, permit or license issued pursuant to this chapter upon a showing that the holder presents a substantial probability of serious danger to the health, safety or welfare of any resident of this state or client of the licensee.