Hearing Conservation Program: OSHA 1910.95 Requirements
Quick answer: When employee noise exposure reaches an 8-hour average of 85 dBA (the "action level"), OSHA's 29 CFR 1910.95 requires a hearing conservation program: noise monitoring, baseline and annual audiograms, free hearing protectors, and annual training. The permissible exposure limit (PEL) is 90 dBA.
The Two Key Thresholds
- 85 dBA action level — at this 8-hour time-weighted average, the full hearing conservation program is triggered.
- 90 dBA PEL — the permissible exposure limit; above it, you must use feasible controls to reduce exposure.
What the Program Requires
| Element | Requirement |
|---|---|
| Monitoring | Measure noise when exposures may reach 85 dBA; repeat when conditions change |
| Audiometric testing | Baseline audiogram, then a new audiogram at least annually |
| Hearing protectors | Provided free, with a choice of suitable types, for anyone at/above 85 dBA |
| Training | Annual training on noise effects, protectors, and audiometric testing |
| Recordkeeping | Retain noise measurements and audiometric records |
Annual Audiograms and Standard Threshold Shifts
Each year's audiogram is compared to the baseline. A Standard Threshold Shift (a defined change in hearing) triggers follow-up: refitting protectors, retraining, and in some cases a referral. Catching shifts early is the whole point of the program.
Training: Every Year
Training must be repeated annually and cover the effects of noise on hearing, the purpose and use of hearing protectors, and the purpose of audiometric testing. See how this fits your overall training schedule.
Frequently Asked Questions
Is hearing protection mandatory at 85 dBA?
It must be made available at 85 dBA and must be worn by employees who have experienced a standard threshold shift or who are exposed above the PEL.
How often are audiograms required?
A baseline, then at least annually for employees in the program.
Run an Audit-Ready Hearing Program with Vetted Safe
Vetted Safe delivers annual hearing conservation training and tracks each employee's 12-month due date, with records ready for inspection.