Respiratory Protection & Fit Testing: OSHA 1910.134 Explained
Quick answer: Whenever employees use respirators, OSHA's Respiratory Protection standard (29 CFR 1910.134) requires a written program with a hazard assessment, a medical evaluation before use, a fit test before use and at least annually, and annual training on proper use, limitations, and maintenance.
When a Program Is Required
A full written program is required whenever respirators are required by the employer or by a hazard, or when their use could create a hazard. Even purely voluntary respirator use carries some obligations (see below).
The Written Program
The program must be administered by a trained program administrator and cover respirator selection, medical evaluations, fit testing, use, maintenance, and training. Selection must be based on the hazard and the workplace exposure.
Medical Evaluation
Because wearing a respirator places stress on the body, each user must complete a medical evaluation (via a questionnaire or exam) before fit testing or use, and again if conditions or health status change.
Fit Testing
Tight-fitting respirators must be fit tested with the same make, model, and size the employee will wear — before first use, when the facepiece changes, and at least annually. Fit testing is either qualitative (pass/fail by taste or smell) or quantitative (instrument-measured). Users must also perform a seal check every time they don the respirator.
Annual Training
Training is required before use and at least annually, covering why the respirator is needed, its limitations, how to don/doff and seal-check it, and how to maintain it. Retrain sooner if understanding lapses or conditions change.
Voluntary Use
If employees voluntarily use respirators (including filtering facepieces/N95s) where not required, the employer must at minimum provide the information in Appendix D and ensure use doesn't create a hazard.
Frequently Asked Questions
How often is respirator fit testing required?
Before first use, whenever the make/model/size changes, and at least once every 12 months thereafter.
Does an N95 require a full program?
If the N95 is required, yes — medical evaluation, fit testing, and training all apply. Truly voluntary N95 use has lighter requirements (Appendix D).
Manage Respiratory Protection with Vetted Safe
Vetted Safe delivers annual respiratory protection training and tracks each employee's training and fit-test due dates so nothing lapses.