Missouri has no specific law or regulation requiring most employers to conduct fire drills, with the exception of schools, daycare centers, and nursing homes. Local safety codes may contain additional requirements.
The federal Occupational Safety and Health Act (OSH Act) standards, which govern Missouri's occupational safety and health system, require that companies with 10 or more employees have written fire prevention and emergency exit plans for each workplace. Employers with fewer than 10 employees may communicate the plans orally. To ensure that the exit plan will work in an actual emergency, it is advisable to rehearse regularly with annual or semiannual drills.