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Toolbox talk · 10 min · Health & Ergonomics

Hearing Loss Prevention

Hazards: Permanent noise-induced hearing loss · Tinnitus · Missed warning signals and back-up alarms

Why it matters

Noise kills the hair cells in your inner ear, and they do not grow back. In OSHA's words, the result is permanent hearing loss that cannot be corrected through surgery or with medicine. CPWR's 2025 Construction Chart Book found 12.9 percent of construction workers reporting difficulty hearing in 2023 — fourth highest of any industry. The other half of OSHA's statement is the good news: this is 100 percent preventable.

Key points

  • It happens quietly, and the high notes go first. The cells that pick up high frequencies die first, so speech gets muffled long before anything sounds quieter. Nothing hurts.
  • Muffled hearing after a shift is a warning. OSHA describes a temporary loss lasting 14 to 16 hours; repeat it often enough and hearing stops coming back. Ringing counts too.
  • Know the signs OSHA lists. Groups are hard to follow, people seem to mumble, you ask for repeats, the phone is hard, ears ring, back-up alarms get missed.
  • The baseline audiogram is your reference for the rest of your career. Due within 6 months of first exposure at an 85 dBA average, after 14 hours without workplace noise — protectors can stand in for those hours.
  • The annual test catches a shift early. A 10 dB average shift at 2,000, 3,000 and 4,000 Hz is a standard threshold shift: written notice within 21 days, and refitting to 85 dBA or below.
  • Plugs are the last line, not the first. Quieter gear, distance and barriers come first — above a 90 dBA average, feasible controls are required, not optional.

Do / Don't

Do

  • Take the hearing test when it is offered — it is free and on the clock.
  • Ask what your audiogram showed, and keep track of it.
  • Speak up about a task that leaves your ears ringing.
  • Protect your hearing off the clock too — mowers, saws, ranges, concerts.

Don't

  • Wait until you notice the loss — by then it is permanent.
  • Show up for a baseline test straight off a noisy shift.
  • Treat "I'm used to it" as a sign you are safe.
  • Rely on plugs while a quieter tool or a barrier is available.

Quick site check

  • Does everyone in the noise on this job know when their last hearing test was?
  • Can two people three feet apart talk without raising their voices where we are standing?
  • Which loud task today could be done with a quieter tool, farther away, or behind a barrier?
  • Is anyone reporting ringing or muffled hearing at the end of shifts?
Discussion — ask the crew
  1. Who here has to turn the TV up louder than the rest of the house, or asks people to repeat themselves?
  2. Has anyone noticed ringing in their ears after a shift — and did it go away by the next morning?
  3. When was your last hearing test, and did anyone ever explain the results to you?
  4. Which task on this job is the loudest, and what would it take to make it quieter instead of just wearing plugs?
  5. Do we all hear the back-up alarms and the horn on this site, every time?
Refs: OSHA — Occupational Noise Exposure overview (permanent hearing loss that cannot be corrected through surgery or with medicine; CDC estimate of 22 million workers exposed each year) · OSHA #ListenUp — Hearing Conservation in Construction toolbox talk (hearing loss is permanent and 100% preventable; associated health effects) · OSHA 3498 — Protecting Yourself from Noise in Construction (the signs of hearing loss; temporary loss lasting 14-16 hours; cilia damage) · 29 CFR 1910.95(g) — Audiometric testing program (baseline within 6 months, 14 hours without workplace noise, annual audiogram, standard threshold shift, 21-day notification) · OSHA 3074 — Hearing Conservation (what the employer must do after an audiogram shows a standard threshold shift) · CPWR — The Construction Chart Book, 7th edition (2025), chapter 47: hearing loss and tinnitus in constructionSign-in sheet included in the printed version

Frequently asked questions

No. OSHA states it plainly: loud noise damages and kills the hearing receptor cells in the inner ear, and the result is permanent hearing loss that cannot be corrected through surgery or with medicine. A hearing aid amplifies what is left; it does not restore what is gone.

Under 29 CFR 1910.95(g), it is an average change from your baseline audiogram of 10 dB or more at 2,000, 3,000 and 4,000 Hz in either ear. When one shows up, the employer must fit or refit you with adequate hearing protectors, show you how to use them, require you to wear them, and notify you in writing within 21 days.

Because noise causes a temporary shift that can last most of a day, and a baseline taken inside that window would be the wrong reference for the rest of your career. 29 CFR 1910.95(g)(5)(iii) requires at least 14 hours without exposure to workplace noise before the baseline audiogram; hearing protectors may be used as a substitute for those quiet hours. The next paragraph also requires the employer to tell you to avoid loud non-work noise during the same 14 hours.

The employer. Audiometric testing must be made available at no cost to employees whose exposures equal or exceed an 8-hour time-weighted average of 85 decibels, and it has to be repeated at least annually.

It is a warning. OSHA's construction noise guide describes a temporary loss that can last 14 to 16 hours, and explains that with repeated exposure at high levels hearing may not fully recover. Ringing in the ears, or tinnitus, can also occur without any other obvious hearing loss.

CPWR's Construction Chart Book (7th edition, 2025) reports that 12.9% of construction workers said they had difficulty hearing in 2023 — the fourth highest of any industry and above the 11.3% average — and that construction workers over 50 are about 1.7 times more likely to report poor hearing than others their age.

Sources & references

Content checked against these sources — last reviewed August 28, 2026.

Results are estimates for planning purposes and do not replace a competent person's evaluation or an engineer's design. Follow the OSHA standards that apply to your work and your employer's written program.

By — Editorial team of SteelToeTools.com (published by LSEA SAS) Updated