Hearing Conservation Program Audit: What OSHA Actually Checks

An OSHA inspection that touches hearing conservation rarely starts with the audiometric booth. It starts with paper, or more often now, a shared drive folder: noise monitoring data, the written hearing conservation program, and every audiogram the employer has on file. A compliance safety and health officer working a 1910.95 case is not there to listen to a hearing test, they are there to confirm the program exists, was followed on schedule, and produced records that match what the standard requires. Employers who treat the annual audiogram as the whole program are usually the ones who find gaps once an inspector starts asking for the supporting documentation behind it.

What triggers a hearing conservation review in the first place?

Most 1910.95 reviews happen inside a broader inspection, prompted by a complaint, a referral, a programmed inspection in a high-noise industry, or a recordable hearing loss case that shows up on the employer's OSHA 300 log. Once noise exposure or audiometric testing comes up, the compliance officer works from OSHA's Field Operations Manual procedures for document review, which direct them to the employer's actual records rather than to a verbal description of the program. That means the inspection's outcome depends heavily on what was captured and filed in the months and years before the inspector ever showed up, not on what gets explained to them that day.

What does the inspector ask for on noise monitoring?

1910.95 requires noise monitoring when information indicates any employee's exposure may equal or exceed an 8-hour time-weighted average of 85 decibels, and a compliance officer will ask to see that monitoring data, the dates it was taken, and how it mapped to the hearing conservation program's enrollment decisions. Federal recordkeeping obligations attached to the standard, confirmed in a 2025 Federal Register notice renewing the standard's paperwork burden, specifically list noise monitoring, worker notification at or above the action level, and audiogram records among the required collections of information under the standard. An employer that enrolled employees in the program based on a job title or a general sense of "it's loud in there," without dated monitoring results, has nothing to show when asked how that decision was made.

How closely do inspectors compare audiograms to baseline?

This is where most document review time goes. The compliance officer pulls a sample of employee audiograms and checks whether each has an identifiable baseline, whether the annual test was actually compared against that baseline, and whether any standard threshold shift was identified, documented, and followed up on. A test that was performed but never compared to anything is functionally the same as a missing test from an enforcement standpoint, because the comparison is what the standard requires, not the test by itself. Audiograms that are scattered across multiple vendors, years, or formats because of staff or contractor turnover make this comparison harder to produce on request, which is itself a finding.

Document category	What the inspector is checking
Noise monitoring data	Exposure levels and enrollment basis for the hearing conservation program
Baseline and annual audiograms	Existence, dating, and comparison to baseline for each enrolled employee
STS determinations and follow-up	Written notice, protector refitting/retraining, referral where applicable
Training records	Annual training delivered, topics covered, who attended
OSHA 300/300A log	Recordable hearing loss cases cross-checked against 1904.10 criteria

Do training records get checked the same way as audiograms?

Yes, and they are often the weaker half of the file. The standard requires annual training for employees in the hearing conservation program covering the effects of noise on hearing, the purpose and use of hearing protectors, and the purpose of audiometric testing. An inspector asking for training records wants attendance tied to specific employees and dates, not a generic slide deck with no sign-in sheet. A program that runs solid annual testing but cannot produce who attended training and when has a real, separately citable gap, even if every audiogram on file is perfect.

How does Foster help employers stay ready for this before an inspection happens?

The gap that shows up during an OSHA document review is almost always a continuity gap, a baseline from one vendor, annual tests from another, training sign-in sheets in a filing cabinet, and nobody who can produce the full set for a given employee inside the time an inspector allows. Foster runs baseline and annual hearing testing as one continuous record per employee rather than a fresh file each visit, and Foster's Compliance Workspace keeps the noise monitoring basis, the audiogram trend, STS determinations, and training attendance attached to that same employee record. See the full rundown of program elements OSHA's checklist covers for how the pieces fit together, and how a confirmed shift separately becomes an OSHA 300 log entry at when an STS is recordable. Employers on Foster's on-site testing schedule can pull a complete employee file in minutes instead of reconstructing it across vendors during an open inspection.

Frequently Asked Questions

What is the first document an OSHA inspector asks for in a hearing conservation review?

Typically the noise monitoring data that established who needed to be enrolled in the hearing conservation program, followed by the audiometric test records for a sample of enrolled employees.

Does a completed annual audiogram satisfy the standard on its own?

No. The annual test has to be compared against the employee's baseline audiogram, and that comparison, including identification of any standard threshold shift, is part of what gets reviewed, not just whether the test occurred.

Can missing training sign-in records be cited separately from audiogram gaps?

Yes. Training documentation and audiometric testing documentation are evaluated against separate provisions of 1910.95, so a program can have clean audiograms and still be cited for training recordkeeping gaps.

Does a hearing conservation citation always trace back to a recordable case on the OSHA 300 log?

No. A citation can result from a programmatic gap, such as missing monitoring data or incomplete training records, independent of whether any specific case was ever recordable under 1904.10.

Sources

• OSHA Field Operations Manual
• OSHA 29 CFR 1910.95, Occupational Noise Exposure
• Federal Register, OSHA Information Collection Request Renewal, Occupational Noise Exposure Standard (2025)