OSHA term · Glossary
Hearing Conservation Program
Verified vs OSHA sources · 2026-10-05
A program 29 CFR 1910.95 requires in general industry whenever a worker's noise exposure equals or exceeds an 85 dBA 8-hour TWA — the "action level." It includes noise monitoring, audiometric (hearing) testing, hearing protectors, training, and recordkeeping, and its goal is to catch and prevent noise-induced hearing loss before it becomes permanent. Note the two thresholds: the program triggers at the 85 dBA action level, which sits below the 90 dBA permissible exposure limit.
Also known as: HCP, hearing conservation
On this page
Hearing Conservation Program at a glance
- Triggered at the 85 dBA 8-hour TWA action level (general industry, 1910.95).
- Elements: noise monitoring, audiometric testing (baseline + annual), hearing protectors at no cost, annual training, and recordkeeping.
- The noise PEL is 90 dBA TWA with a 5-dB exchange rate — so the program starts below the PEL.
- In construction (1926.52) the codified PEL/trigger is 90 dBA TWA; the 85 dBA action level and audiometric testing are a NIOSH/OSHA-recommended best practice there, not a codified construction requirement.
In plain English
The workplace program that protects your hearing when it's loud on the job. Once average noise hits 85 dBA over 8 hours, your employer has to test your hearing every year, give you hearing protection, and train you — all to stop gradual, permanent hearing loss.
What the rule says
“The employer shall administer a continuing, effective hearing conservation program ... whenever employee noise exposures equal or exceed an 8-hour time-weighted average sound level (TWA) of 85 decibels.”
In context
An enforcement, recordkeeping, or general-duty concept under the Occupational Safety and Health Act and 29 CFR. These terms define how OSHA inspects, cites, and penalizes employers.
Where this is written in OSHA's rules
- 29 CFR 1910.95Read on eCFR / OSHA.gov
- 29 CFR 1926.52Read on eCFR / OSHA.gov
- 29 CFR 1910.95(c)(1)Read on eCFR / OSHA.gov
Example
A stamping plant measures a press operator at 88 dBA TWA — above the 85 dBA action level but below the 90 dBA PEL. That still triggers the full hearing conservation program: annual audiograms, hearing protectors offered, and training, even though the exposure is under the PEL.
Why it matters
Noise-induced hearing loss is permanent, painless, and gradual — workers often don't notice until it's irreversible. The program exists to detect early shifts on the annual audiogram and intervene, which is why it starts at the 85 dBA action level rather than waiting for the 90 dBA PEL.
Action level (85 dBA) vs. PEL (90 dBA)
These are two different thresholds. The 85 dBA action level triggers the hearing conservation program (monitoring, audiograms, protectors, training). The 90 dBA PEL is the legal exposure limit above which the employer must reduce noise through controls. Because the action level is lower, the program kicks in before exposures reach the PEL.
Noise thresholds under 1910.95
| Threshold | Level (8-hr TWA) | What it triggers |
|---|---|---|
| Action level | 85 dBA | Hearing conservation program |
| PEL | 90 dBA | Feasible noise controls required |
| Exchange rate | 5 dB | Halves allowed time per +5 dB |
Hearing Conservation Program: frequently asked questions
- When is a hearing conservation program required?
- In general industry, whenever a worker's noise exposure equals or exceeds an 85 dBA 8-hour TWA — the action level under 1910.95(c). At that point monitoring, audiometric testing, hearing protectors, and training are required.
- What's the difference between the 85 dBA action level and the 90 dBA PEL?
- The 85 dBA action level triggers the hearing conservation program; the 90 dBA PEL is the legal exposure limit requiring noise controls. The program starts at the lower action level, before exposures reach the PEL.
- What does a hearing conservation program include?
- Noise monitoring, audiometric (hearing) testing with a baseline and annual audiograms, hearing protectors provided at no cost, annual training, and recordkeeping.
Related terms
Free tools for this
More OSHA terms
The action an employer takes to fix a cited violation or eliminate a hazard OSHA identified during an inspection. The citation sets an abatement date, the deadline to correct the hazard, and within 10 calendar days after that date the employer must certify to OSHA that the violation was abated. Failure to abate accrues additional penalties of up to $16,550 per day.
Area DirectorThe senior OSHA official in charge of a specific OSHA Area Office — the local unit that runs inspections and enforcement in its geographic territory. The Area Director has the authority to issue citations, propose penalties, hold informal conferences with employers, and approve settlement agreements. When a Compliance Safety and Health Officer (CSHO) completes an inspection, it's the Area Director who ultimately issues the citation.
Bureau of Labor Statistics (BLS)The federal statistical agency within the U.S. Department of Labor that collects, analyzes, and publishes data on workplace injuries, illnesses, and fatalities. BLS conducts the annual Survey of Occupational Injuries and Illnesses (SOII) — compiled from employer OSHA 300 logs — and the Census of Fatal Occupational Injuries (CFOI). SOII data drives OSHA's Site-Specific Targeting (SST) program: establishments whose DART rates significantly exceed their BLS industry average are placed on the SST inspection list.
Competent PersonUnder OSHA's construction standards, a person who is capable of identifying existing and predictable hazards in the surroundings or working conditions, and who has the authorization to take prompt corrective measures to eliminate them. The role requires both knowledge and the authority to act, and is mandated by name in many specific standards — excavations, scaffolds, fall protection, asbestos, and more.
CitationThe formal written notice OSHA issues to an employer after an inspection, describing each alleged violation, the standard cited, the proposed penalty, and the date by which the hazard must be corrected (abated). OSHA must issue a citation with reasonable promptness and no later than six months after the violation occurred.
Closing ConferenceThe meeting at the end of an OSHA inspection where the compliance officer confers with the employer and informally advises them of any apparent violations found. Importantly, the closing conference discusses what was observed and the employer's rights — but it does NOT state final citations or penalties, which come later in the written Citation and Notification of Penalty.
Compliance Officer (CSHO)An OSHA Compliance Safety and Health Officer — the inspector who conducts workplace inspections. A CSHO presents credentials (a photo ID and a serial number), holds the opening conference, performs the walkaround, collects evidence, interviews employees, and recommends citations. CSHOs are either safety specialists or industrial hygienists.
ContestAn employer's formal challenge to an OSHA citation, penalty, or abatement date. To contest, the employer must file a written Notice of Contest with the OSHA Area Director within 15 working days of receiving the Citation and Notification of Penalty. Filing sends the case to the independent Occupational Safety and Health Review Commission (OSHRC); missing the deadline makes the citation a final, un-appealable order.
Sources & verification
- 29 CFR 1910.95 (eCFR / OSHA.gov)
- 29 CFR 1926.52 (eCFR / OSHA.gov)
- 29 CFR 1910.95(c)(1) (eCFR / OSHA.gov)
- OSHA — 1910.95 (Occupational Noise Exposure)
- OSHA — Occupational Noise Exposure (Safety Topics)
Reviewed by HazComFast against eCFR, OSHA.gov, NIOSH, and the Federal Register. Last reviewed 2026-10-05. This glossary is general information, not legal advice; OSHA State-Plan states (e.g. California, Michigan) may adopt stricter requirements.
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