How Loud Is Too Loud? Headset Volume for All-Day Calls

The U.S. National Institute for Occupational Safety and Health (NIOSH) recommends keeping noise exposure at or below 85 A-weighted decibels (dBA), averaged over an eight-hour workday. For someone on video calls with a headset most of the day, that is the number to think about. NIOSH's pages are written for workplaces with machinery, not for headsets, so the guidance below is a reading of the general limit, not a headset-specific rule. The NIOSH pages cited here were read in October 2026.

1. The limit and the 3 dBA rule

NIOSH defines its recommended exposure limit (REL) for occupational noise as 85 dBA averaged over an eight-hour workday. It also says noise is considered hazardous when it reaches 85 dBA or higher, and that workers exposed at or above the REL are at risk of significant hearing loss over their working lifetime.

Louder sound shortens the allowed time. NIOSH uses a 3 dB exchange rate: for each 3 dBA increase in noise level, it recommends cutting the exposure duration in half. If the daily exposure is longer than eight hours, the allowable level is lower.

Applying that rule gives these allowed daily durations:

The table is arithmetic from NIOSH's stated halving rule, starting at the 85 dBA and eight-hour anchor. Decibels are logarithmic, too: NIOSH notes a sound 10 dB louder than another is ten times more intense, so small-looking volume changes matter.

2. Why this matters for calls

Hearing loss from workplace noise is permanent. NIOSH lists signs that can be early warnings: trouble hearing against background noise, thinking people mumble, and often asking others to repeat themselves. It adds that people close to you often notice hearing trouble before you do. NIOSH also reports that about 1 in 9 people in the U.S. working population has hearing difficulty and about 1 in 13 has tinnitus (ringing in the ears).

One practical difficulty is that a headset has no label showing dBA at your ear. Software volume sliders are not decibel readings at the eardrum, and this page cannot tell you what a given slider position produces on your hardware.

3. A simple check from NIOSH

NIOSH offers one rule of thumb for judging noise in a space: levels are likely hazardous if a person must raise their voice to speak with someone an arm's length away. A parallel check for headsets is whether you can no longer hear your own surroundings, or whether you keep turning up the volume to overcome background noise such as street sound or a fan. Raising the volume to beat the environment is how listeners drift toward higher levels without noticing.

NIOSH says noise problems are best addressed by creating a quieter environment. Common-sense ways to apply that at a desk (these specific steps are not NIOSH instructions):

• Reduce background noise at its source (close a window, move away from an appliance) instead of turning the headset up.
• Take your headset off between calls so total daily exposure stays lower.
• Keep the volume at the lowest level at which speech is clear.
• If you notice trouble hearing or ringing in your ears, ask a clinician about a hearing test.

NIOSH also advises workers exposed to hazardous noise to have a yearly hearing test. Whether a headset puts you in that group depends on levels you cannot easily measure at home.

4. The measurement tool NIOSH mentions

NIOSH offers a Sound Level Meter app for iOS devices, with recommended settings of a 3 dB exchange rate, A-weighting and slow response. Its page cautions that sound measurement apps may not comply with regulatory requirements, and the app measures room sound, not what is delivered inside a headset cup.

5. Key takeaways

• NIOSH's recommended limit is 85 dBA averaged over eight hours; every 3 dBA increase halves the recommended time.
• Noise-related hearing loss is permanent but preventable.
• The guidance is for workplace noise in general, not headset-specific, and a volume slider does not show decibels at your ear.
• Needing to raise your voice at arm's length, or to keep raising headset volume, are signs the level may be too high.
• Ask a clinician about a hearing test if you notice changes or ringing.