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Guide · Respirators · OSHA 1910.134(c)(2) and Appendix D

What is voluntary respirator use, and what does Appendix D require?

Voluntary use is when a respirator is not required, by OSHA or by the employer, but an employee wants to wear one anyway and the employer allows it. The air is already below the exposure limits; the mask is for comfort or extra margin. OSHA still sets rules. The employer must first decide the respirator will not itself create a hazard, then hand every voluntary user the Appendix D information sheet. For a voluntary dust mask (N95 or other filtering facepiece) that is the whole duty. For a voluntary reusable respirator, a half mask or full facepiece with cartridges, the employer must also confirm the employee is medically able to wear it and see that it is cleaned, stored and maintained. No fit test is required for voluntary use.

Bayshore Safety. Industrial safety and PPE supplier since 2017. · Current as of October 2026 · 29 CFR 1910.134 and Appendix D (current e-CFR)
3M Aura N95 Particulate Disposable Respirators3M Aura N95 particulate respiratorNIOSH N95 filtering facepiece; the kind of respirator most voluntary use involves

Why does OSHA regulate a mask nobody is required to wear? Because a respirator can hurt the person wearing it. It adds breathing resistance and heat, which matters for someone with a heart or lung condition, and a reusable mask that is never cleaned grows what it collects. Appendix D exists so the employee knows those limits, and paragraph (c)(2) exists so the employer checks the two things the employee cannot check alone: that the mask is not a hazard in that workplace, and, for a reusable mask, that the wearer is medically able to use it.

What does the employer have to do for voluntary use?

The duties depend on the kind of respirator. A filtering facepiece gets the lightest treatment in the standard.

Decide it is safe to allow.Before permitting any voluntary use, the employer determines that the respirator will not in itself create a hazard. If it would, voluntary use is not permitted.
Give out Appendix D.Every voluntary user gets the information in Appendix D, in writing or orally. This applies to a voluntary N95 as much as to a voluntary half mask.
For reusable respirators, two more things.The employer must put in place the parts of a written program needed to make sure the voluntary user is medically able to wear the respirator, and that it is cleaned, stored and maintained so it does not become a health hazard.
Dust masks are exempt from the program.Employees whose only respirator use is voluntary use of filtering facepieces do not have to be covered by a written respiratory protection program at all.
No fit test, no annual training.Fit testing (paragraph (f)) and the training in paragraph (k)(1) are written for required use. Voluntary users get Appendix D instead.
1910.134(c)(2)(i) and (ii), including the exception for filtering facepieces; 1910.134(k)(6).

What counts as voluntary use?

Use is voluntary only when neither OSHA nor the employer requires a respirator for that job. OSHA requires one when exposure is above a permissible exposure limit or a substance-specific standard calls for it; the employer requires one whenever its own program or a supervisor says to wear it. If either is true, the full standard applies: written program, medical evaluation, fit test, training, and the rest. The label "voluntary" cannot be used to avoid those duties on a job that actually needs a respirator.

1910.134(c)(1): program required where respirators are necessary to protect health or are required by the employer; 1910.134(c)(2): where respirator use is not required.

The employer may supply the respirator or let the employee bring their own. Either way, the employer still has to make the hazard determination and provide Appendix D. The employee cannot be charged for a respirator the employer provides.

1910.134(c)(2)(i): provide respirators at the request of employees or permit employees to use their own; 1910.134(c)(4).

What does Appendix D actually say?

Appendix D is a short mandatory notice titled "Information for Employees Using Respirators When Not Required Under the Standard." It says respirators are an effective method of protection when properly selected and worn, that use is encouraged even below the exposure limit, and that a respirator used improperly or not kept clean can itself become a hazard. It then tells the employee to do 4 things.

1910.134 Appendix D (Mandatory).

The 4 points of Appendix D

1. Read and follow all manufacturer instructions on use, maintenance, cleaning and care, and the warnings about the respirator’s limitations. 2. Choose a respirator certified for the contaminant of concern; NIOSH certifies respirators, and a label or statement of certification on the respirator or its packaging tells you what it is designed for and how much it will protect you. 3. Do not wear it into atmospheres it is not designed for; a respirator designed to filter dust particles will not protect against gases, vapors, or very small fume or smoke particles. 4. Keep track of your respirator so you do not mistakenly use someone else’s.

1910.134 Appendix D, items 1 through 4.

Does a voluntary N95 need a medical evaluation or a fit test?

No. The medical requirement in (c)(2)(ii) applies to voluntary use of respirators other than filtering facepieces, and the exception in the same paragraph takes voluntary dust-mask users out of the written program entirely. Fit testing in paragraph (f) is tied to employees being required to use a tight-fitting respirator. A voluntary N95 user gets the Appendix D information and nothing more is required of the employer.

1910.134(c)(2)(ii) and its exception; 1910.134(f) introductory text and (f)(1).

A voluntary half mask or full facepiece is different. The employer must make sure the user is medically able to wear it, which in practice means the medical questionnaire or examination of paragraph (e), and must see that it is cleaned, stored and maintained. Still no fit test, because the fit-test duty attaches to required use.

1910.134(c)(2)(ii); 1910.134(e)(1) and (e)(2); 1910.134(h)(1) and (h)(2) for the cleaning and storage procedures the program can adopt.

How should an employer document voluntary use?

  • A short written determination that the voluntary respirator does not itself create a hazard in that work area, naming the respirator type.
  • A copy of Appendix D with a signature line, one per employee, kept with the program records. The standard allows oral delivery, but a signed copy is the record.
  • For reusable respirators: the medical clearance from the PLHCP and the cleaning and storage procedure the employee follows.
  • A line in the written program (if one exists for required use elsewhere) stating which jobs are voluntary and which are required, so the two are never confused during an inspection.
1910.134(c)(2)(i) and (ii); 1910.134(k)(6): Appendix D in any written or oral format; 1910.134(m)(3): a written copy of the current program.

N95 filtering facepieces and half-mask respirators

26 items · prices live

Filter class and respirator type are as published by the manufacturer and shown on each item. Which group a voluntary user falls in depends on the respirator: filtering facepieces need only Appendix D; reusable half masks also need the medical check and a cleaning routine. Free shipping on orders over $199.

ItemClassPart numberPrice
Moldex 151 Disposable Respirators, N95 Healthcare Particulate Respirators
ClassN95Part151
$48.24
Gerson 1740 Disposable Respirators, N95 Particulate Respirator, Nose and Mouth
ClassN95Part1740
$181.47
Moldex Disposable Respirators, N95 Particulate Respirators
ClassN95Part220
$1.35
Moldex 2400N95 Disposable Respirators, N95 Particulate Respirator, Medium
ClassN95Part2400N95
$64.76
Moldex 2600N95 Disposable Respirators, HandyStrap N95 Particulate Respirator
ClassN95Part2600N95
$38.52
Moldex 2500N95 Disposable Respirators, N95 Particulate Respirator, Two-Strap
ClassN95Part2500N95
$86.72
Moldex 2700N95 Disposable Respirators, HandyStrap N95 Particulate Respirator
ClassN95Part2700N95
$4.40
Moldex 2800N95 Disposable Respirators, HandyStrap N95 Particulate Respirator
ClassN95Part2800N95
$90.04

ItemClassPart numberPrice
Moldex Disposable Respirators, N95 2-Strap Particulate Respirators, Exhale Valve
ClassN95Part230
$3.52
Portwest P201 Disposable Respirators, N95 Valved Cup Respirator
Portwest P201 N95 Valved Cup RespiratorClass: N95 · Sold per pack
ClassN95PartP201WHR
$13.99
JSP 272-RPD725N95 Premium N95 Disposable Respirator, Valve, 10 Pack
ClassN95Part272-RPD725N95
$24.49

ItemClassPart numberPrice
Moldex 2310 Disposable Respirators, N99 Premium Particulate Respirator, Medium
ClassN99Part2310
$5.90
3M 8293 Disposable Respirators, P100 Particulate Respirator, Half Facepiece
ClassP100Part7000002055
$13.35
3M 8233 Disposable Respirators, N100 Particulate Respirator, Half Facepiece
ClassN100Part7000002028
$11.84
Moldex 4700N100 Airwave N100 Disposable Particulate Respirator
ClassN100Part4700N100
$87.05

ItemClassPart numberPrice
Moldex 700 Reusable Half-Mask Facepieces
ClassHalf facepiecePart700
$25.02
MSA Advantage 8154 200 LS Half-Mask Respirator Single
ClassHalf facepiecePart8154
$21.80
MSA Advantage 1010218 420 Series Half-Mask Respirator
ClassHalf facepiecePart1010218
$45.40
MSA Advantage 200 LS Half-Mask Respirator 2-Piece
ClassHalf facepiecePart815
$21.80
MSA 8080 Comfo Classic Respirators
ClassHalf facepiecePart8080
$77.50
MSA Comfo Classic Respirator Silicone
ClassHalf facepiecePart80807
$82.54
3M Half Facepiece Respirator Series
ClassHalf facepiecePart7100134948
$40.23
3M Half Facepiece Reusable Respirator Series Resist Gases
ClassHalf facepiecePart700000193
$18.38

Full facepieces, PAPR systems and cartridges are in the respirator selector.

Questions people ask

What is voluntary respirator use?

Wearing a respirator when neither OSHA nor the employer requires it, because the employee wants to and the employer allows it. The air is below the exposure limits. (1910.134(c)(2).)

Does OSHA require Appendix D for N95 voluntary use?

Yes. Appendix D goes to every voluntary user, including those wearing a filtering facepiece. It is the one duty that applies to all voluntary use. (1910.134(c)(2)(i) and (k)(6).)

Does a voluntary N95 user need a fit test?

No. Fit testing applies to required use of a tight-fitting respirator. (1910.134(f).)

Does a voluntary N95 user need a medical evaluation?

No. The medical requirement for voluntary use does not apply to filtering facepieces, and voluntary dust-mask users are excepted from the written program. (1910.134(c)(2)(ii).)

Does a voluntary half mask need a medical evaluation?

Yes. For a voluntary respirator other than a filtering facepiece the employer must make sure the employee is medically able to wear it, and that it is cleaned, stored and maintained. (1910.134(c)(2)(ii).)

Can an employee bring their own respirator?

Yes, if the employer permits it after determining it will not create a hazard. The employee still gets Appendix D. (1910.134(c)(2)(i).)

Can voluntary use be in writing or does it have to be verbal?

Either. The standard says any written or oral format. A signed copy of Appendix D is the usual record. (1910.134(k)(6).)

When does voluntary use stop being voluntary?

As soon as exposure is above a limit or the employer requires the respirator for the task. Then the full standard applies: program, medical evaluation, fit test and training. (1910.134(c)(1).)

Standards and ratings on this page are as published in the documents named and by the manufacturers named. The employer’s hazard assessment and written program decide what applies at a given workplace. Verify a rating on the product and its spec sheet before use.

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