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OSHA's hearing conservation recordkeeping requirements are among the most frequently cited violations in general industry—not because employers fail to run their programs, but because they fail to document them. Under 29 CFR 1910.95(m), employers must maintain specific records for noise exposure measurements, audiometric test results, and employee notifications—each with distinct retention periods, access requirements, and transfer obligations. This guide covers every recordkeeping obligation under 1910.95, the OSHA 300 Log hearing loss recordability test, employee access rights, and how digital platforms eliminate the gaps that paper-based programs consistently miss.
Soundtrace provides a cloud-based hearing conservation platform that automates recordkeeping under 29 CFR 1910.95(m)—capturing noise exposure measurements, audiometric test results, STS flags, employee notifications, and HPD fit test data in a single audit-ready system.
29 CFR 1910.95(m) specifies three categories of records that must be maintained. These are not optional documentation practices—they are mandatory compliance elements that OSHA inspectors verify during every hearing conservation inspection.
All noise monitoring measurements, including employee name or classification, date, instrument make/model, calibration records, and measured levels. Retain: 2 years minimum.
Baseline and annual audiograms for every enrolled employee, plus physician/audiologist review notes, STS determinations, and employee notification documentation. Retain: Duration of employment.
Written notification to each employee within 21 days of STS determination. Records of annual training completion and employee acknowledgment of audiogram results. Retain: Best practice 3 years.
Not explicitly required under 1910.95, but OSHA compliance guidance and ANSI S12.71 best practice strongly recommend retaining fit test results (PAR values) for all enrolled employees.
Under 1910.95(m)(2)(i)(E), each audiometric record must include the employee’s most recent noise exposure assessment. This cross-reference—linking audiogram to noise measurement—is the element most paper-based programs fail to maintain. Without it, an otherwise complete set of records can still draw a citation.
All noise exposure measurements and monitoring records under 1910.95(m)(1)
Audiometric test records must be kept for the duration of employment; OSHA 29 CFR 1910.1020 extends this to 30 years post-employment for occupational health records
OSHA requires 21-day STS notification but does not specify a retention period; 3 years is the industry standard defensible practice
Injury and illness records including recordable hearing loss cases must be retained for 5 years under 29 CFR 1904
The written hearing conservation program document itself must be maintained and updated; retain all superseded versions with effective dates
PAR values, instrument data, and technician records; retain to demonstrate ongoing fit testing compliance
The 30-year post-employment rule under 29 CFR 1910.1020 means audiometric records for a 20-year employee must be retained for 50 years from their hire date. Cloud storage is the only practical solution at scale.
Under 1910.95(m)(1), noise monitoring records must include sufficient information to fully recreate and defend the measurement. OSHA does not prescribe a specific form, but inspectors look for these fields:
The name of the monitored employee, or the job classification they represent if classification-based sampling was used. Each monitored worker’s record must be identifiable.
The specific date (not just month/year) each measurement was taken. This allows inspectors to correlate monitoring with production conditions and any triggering changes.
For both the dosimeter/SLM and the calibrator. Without this, the measurement cannot be validated against ANSI S1.4 / S1.25 requirements.
Calibration must be performed before and after each monitoring session. Both readings must be documented—a missing post-calibration record is a common citation trigger.
The actual dosimeter or SLM reading, the computed 8-hour TWA, and whether the result is at or above the action level (85 dBA) or PEL (90 dBA).
Area monitoring vs. personal dosimetry, production conditions at time of survey, and any deviations from normal operations that may affect representativeness.
Audiometric test records are the most complex recordkeeping obligation under 1910.95. Under 1910.95(m)(2)(i), each record must contain:
Full legal name and current job title/classification at time of test.
The specific date the test was administered, not just the year.
Name of the audiologist, otolaryngologist, or OHC who administered or supervised the test.
The audiometer calibration record must be current and documented per 1910.95(h)(5).
This is the most commonly missed field. The TWA from the employee’s last noise survey must be cross-referenced in the audiometric record.
For manual audiometry, the background noise levels in the testing environment must be documented and must not exceed ANSI S3.1 limits.
The OSHA 300 Log requirement is separate from 1910.95—it falls under 29 CFR 1904. A hearing loss case is recordable on the 300 Log if the employee experiences a standard threshold shift (averaged shift of 10 dB or more at 2,000, 3,000, and 4,000 Hz) and the resulting hearing level is 25 dB HL or greater at those frequencies after age correction.
STS identified but post-shift hearing level is better than 25 dB HL at 2k/3k/4k average. Also not recordable: STS that is reversed on retest within 90 days of original determination.
STS identified AND average hearing level at 2k/3k/4k is 25 dB HL or greater (after age correction). Must be logged on OSHA 300 within 7 calendar days of determination.
Recordable hearing loss on the OSHA 300 Log requires both prongs: a qualifying STS and a post-shift hearing level at or above 25 dB HL. Failing either test means the case is not recordable—but the STS still triggers all 1910.95 follow-up obligations.
Employees have two separate access rights under OSHA that apply to hearing conservation records:
Employees must be notified of monitoring results. For STS determinations, written notification within 21 days is mandatory. Employees may request access to their noise exposure records and audiograms at any time.
OSHA’s Access to Employee Exposure and Medical Records standard gives employees the right to inspect and copy their records upon request. Employers must respond within 15 working days.
OSHA inspectors will ask to see the written STS notifications sent to employees. If the employer cannot produce dated, signed copies (or electronic delivery receipts), the notification element becomes an open citation—even if the audiometric testing itself was flawless.
When an employee transfers to another employer—or when the business is sold—audiometric records must transfer with them. Under 1910.95(m)(3)(ii), if the employer ceases to do business without a successor, all records must be transferred to the Director of the National Institute for Occupational Safety and Health (NIOSH) at least 3 months before closure.
Audiometric records must be provided to the receiving employer. The new employer uses the transferred baseline for STS comparisons—unless a new baseline is warranted.
Successor employers inherit the recordkeeping obligation. All existing audiometric and noise exposure records must be transferred and retained per original retention schedules.
Transfer all records to NIOSH at least 90 days before closure. NIOSH provides a records transfer process at their Cincinnati office. Failure to transfer is a federal violation.
Per citation item. Applies when an employer knew or should have known of the violation and it creates a substantial probability of death or serious harm. Most recordkeeping failures qualify as serious.
Per citation item. Applies when employer intentionally disregarded obligations, or when same violation recurs within 3 years of a prior citation. Recordkeeping failures that persist post-inspection become willful on re-inspection.
Audiogram printouts stored in employee folders. Noise survey results in binders. STS notifications tracked by HR. Common failures: missing cross-references, lost records during staff turnover, inability to produce records in 15 days, no audit trail for STS notifications.
All records linked by employee ID: noise TWA auto-attached to audiometric records, STS flags automatically generate notification workflows, audit logs show when records were created and accessed, and records are transferable in standardized format on demand.
Full breakdown of every recordkeeping element under 29 CFR 1910.95(m) with common compliance gaps and how to close them.
Read guide → 📋Retention PeriodsExact retention schedules for every record type under 1910.95 and 1910.1020, including the 30-year post-employment rule.
Read guide → 🎤Noise RecordsExactly what fields must appear in noise monitoring records, calibration documentation requirements, and the 2-year retention rule.
Read guide → 📝OSHA 300 LogWhen a standard threshold shift becomes a recordable injury on the OSHA 300 Log—the STS trigger, the 25 dB HL threshold, and age correction mechanics.
Read guide → ☁Digital ComplianceHow digital hearing conservation platforms eliminate the manual cross-referencing failures that drive the most common 1910.95(m) citations.
Read guide → 📝Record ContentsThe six required fields for audiometric records, what noise monitoring records must contain, and the cross-reference requirement most programs miss.
Read guide → 🔴Violations & PenaltiesSerious, willful, and repeat violation categories, per-item penalty maximums, and the recordkeeping violations that most commonly elevate citations.
Read guide → 💻Digital vs. PaperHow paper-based audiometry creates recordkeeping gaps, and what a digital platform does differently to protect employers during inspections.
Read guide → 🔍InspectionsThe inspection sequence, which records OSHA always requests first, and how to prepare your recordkeeping system before an inspector arrives.
Read guide → 🤔Fit Test RecordsWhat PAR data to retain, how long to keep fit test records, and how fit test recordkeeping links to the STS follow-up documentation chain.
Read guide → 🪝StrategyWhy recordkeeping is not administrative overhead but the evidentiary foundation of every enforcement defense and workers’ comp dispute.
Read guide → 📚Full ProgramRecordkeeping in context: how 1910.95(m) fits within all six required program elements and the full compliance framework.
Read guide →Soundtrace automatically links noise exposure measurements to audiometric records, generates STS notification workflows, and stores every compliance document in a cloud system built for OSHA inspection readiness.
Book a DemoGet a quote for your facility →Noise monitoring records must be retained for at least 2 years under 1910.95(m)(1). Audiometric test records must be kept for the duration of employment; under 29 CFR 1910.1020, occupational health records must be retained for at least 30 years after the employee’s last date of employment. OSHA 300 Logs must be retained for 5 years under 29 CFR 1904.
Under 1910.95(m)(2)(i), audiometric records must include: employee name and job classification, date of audiogram, examiner name and certification, date of last audiometer calibration, the employee’s most recent noise exposure assessment (the cross-reference most programs miss), and background sound pressure levels in the test room. The most commonly missing element is the cross-reference to the noise exposure assessment.
A standard threshold shift must be recorded on the OSHA 300 Log when (1) the STS criteria are met (10 dB or more average shift at 2,000, 3,000, and 4,000 Hz) AND (2) the employee’s post-shift hearing level at those frequencies averages 25 dB HL or greater after age correction. Both prongs must be satisfied; the STS alone is not sufficient for OSHA 300 recordability.
Under 1910.95(m)(3)(ii), if an employer ceases to do business with no successor employer, all audiometric test records must be transferred to NIOSH at least 3 months before closure. Failure to transfer records is a federal violation. Noise monitoring records with remaining retention periods must also be transferred or delivered to affected employees.
Yes. Under 29 CFR 1910.1020, employees have the right to inspect and copy their noise exposure records and audiometric test results. Employers must provide access within 15 working days of a written request. Employees must also be notified of their audiogram results and, within 21 days, of any standard threshold shift determination.