This plain-language guide covers OSHA 29 CFR 1910.95 1910.95(f) — Hearing Protector Fitting and Use — explaining exactly what the section requires, what it means in practice for EHS managers, and the most common compliance gaps. According to CDC/NIOSH, approximately 22 million U.S. workers are exposed to hazardous occupational noise annually. See the complete OSHA 1910.95 guide for the full standard overview.
Soundtrace delivers audiometric testing and noise monitoring that meets every 1910.95 requirement — including hearing protector fitting and use — supervised by a licensed audiologist.
What 1910.95(f) Requires
1910.95(f)(1): "Employers shall ensure that hearing protectors are worn: (i) By an employee who is required by paragraph (b)(1) of this section to wear personal protective equipment; and (ii) By any employee who is exposed to an 8-hour time-weighted average of 85 decibels or greater, and who has not yet had a baseline audiogram established pursuant to paragraph (g)(5)(ii)."
1910.95(f)(2): "In those situations where the duration of exposure to a TWA of 85 decibels or greater is less than the full work shift, the employer shall ensure that hearing protectors are worn for the portion of the work shift during which the employee is exposed to the 85 decibels or greater level."
1910.95(f)(3): "Hearing protectors shall be fitted only by or under the supervision of persons who have been adequately trained to fit the hearing protectors used by the employer's employees."
The "Adequately Trained" Fitting Supervisor Standard
OSHA does not define specific credentials for a "trained" fitting supervisor. The standard is performance-based: the person fitting HPDs must demonstrate the knowledge and skill to ensure workers are wearing appropriately-selected HPDs that fit properly and achieve adequate attenuation. CAOHC-certified hearing conservationists are the most recognized credential, but employers can also train competent EHS staff in proper HPD fitting through NIOSH or hearing conservation organization resources.
Fit Testing as Best Practice for 1910.95(f) Compliance
Individual fit testing — measuring each worker's actual achieved attenuation with their specific HPD — is the gold standard for demonstrating 1910.95(f) compliance. Fit testing replaces the estimated NRR derating calculation with measured data showing exactly how much attenuation each worker achieves. A worker who achieves only 8 dB of attenuation with a foam earplug labeled NRR 33 is identified and can be refitted, retrained, or switched to a different HPD style before an audiometric STS reveals the inadequacy. See: HPD fit testing: complete employer guide.
The most defensible fitting documentation combines: initial fitting by a trained person with signed worker acknowledgment, fit testing records showing measured attenuation for each worker and each HPD type, and annual refitting/retraining records. This documentation directly demonstrates 1910.95(f) compliance and provides WC defense evidence that the employer provided adequate protection.
OSHA 1910.95 compliant — every section covered
Soundtrace automates 1910.95 compliance across monitoring, audiometry, HPD, training, and records — with licensed audiologist supervision of the complete program.
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