A respirator without a program is just a mask.

When exposures can't be engineered out, the standard requires a written program administered by someone with appropriate training, covering: hazard-based respirator selection (using NIOSH-certified equipment and assigned protection factors); medical evaluation by questionnaire or exam before anyone is fit tested; initial and annual fit testing for every tight-fitting facepiece; training on use, limitations, seal checks, and maintenance; and procedures for cleaning, storage, inspection, and cartridge change schedules.

The sequence is mandatory: medical evaluation precedes fit testing, fit testing precedes use. Citations routinely land on employers who bought the right respirators and skipped the middle steps — the FY2025 data keeps 1910.134 at #5 overall.

Employees who wear respirators voluntarily when no exposure requires it still trigger obligations. Every voluntary user must receive the Appendix D information, and voluntary use of anything beyond filtering facepieces (dust masks) — an elastomeric half-face, for instance — pulls in medical evaluation and maintenance requirements. Many employers discover this only when an inspector asks why the voluntary-use respirators in the tool cribs have no program behind them.

The medical evaluation requirement also interacts with facial hair policies, contact lenses, and PAPR alternatives — all mapped extensively in OSHA's interpretation letters, which RegLogic attaches directly to the relevant paragraphs.

Between the fit-testing protocols of Appendix A, the medical questionnaire of Appendix C, and a deep catalog of LOIs, respiratory protection is a research project in print. RegLogic's search takes "how often is fit testing required?" straight to §1910.134(f)(2), appendices included, current as of today — and the same-day update discipline matters for a standard OSHA has amended repeatedly, most recently around fit-testing protocols.