Mo. Rev. Stat. § 197.150
The department shall require that each hospital, ambulatory surgical center, abortion facility, and other facility have in place procedures for monitoring and enforcing compliance with infection control regulations and standards. Such procedures shall be coordinated with administrative staff, personnel staff, and the quality improvement program. Such procedures shall include, at a minimum, requirements for the facility's infection control program to conduct surveillance of personnel with a portion of the surveillance to be done in such manner that employees and medical staff are observed without their knowledge of such observation, provided that this unobserved surveillance requirement shall not be considered to be grounds for licensure enforcement action by the department until the department establishes clear and verifiable criteria for determining compliance. Such surveillance also may include monitoring of the rate of use of hand hygiene products.
§ 197.150, RSMo