How often should the respiratory protection program be evaluated?

OSHA does not have a required interval. Employers must review the written program and revise, as necessary, the written program elements specified in paragraph (c)(1) when workplace conditions affecting the use of respirators change. Evaluation frequency is to be based on program complexity and on factors such as the nature and extent of workplace hazards, types of respirators in use, variability of workplace processes and operations, number of respirator users, and worker experience in the use of respirators. The employer must review respirator use in the workplace with sufficient frequency to ensure that continuous, successful implementation of all written respirator program elements prescribed under the standard are being achieved.