The IICRC WRT body of knowledge aligns with OSHA respiratory protection standards, which require that employers provide a medical evaluation, fit-testing, and proper training before an employee wears a respirator. These requirements ensure that respirator use does not endanger the worker and that the equipment provides effective protection.

A medical evaluation determines whether the employee can safely wear a respirator without compromising health. Fit-testing ensures the respirator forms an effective seal to the user’s face, which is essential for respiratory protection. Training educates workers on proper use, limitations, maintenance, and storage of respiratory equipment.

The WRT manual emphasizes that respirators are ineffective without proper fit and training, and improper use can create a false sense of security. Color selection or informal distribution of masks does not meet regulatory or professional standards.

Compliance with these requirements is mandatory when respirators are required due to airborne contaminants, sewage exposure, or mold conditions. This reinforces the WRT priority of worker safety and regulatory compliance.