Collection: Hearing Protection

OSHA requires employers to provide hearing protection when employee noise exposure equals or exceeds an 8-hour time-weighted average of 85 dB. At this exposure limit, employers must implement a hearing conservation program that includes noise monitoring, audiometric testing, and hearing protector availability at no cost to employees. Many construction tools and equipment exceed 85dB, making hearing protection essential personal protective equipment on most jobsites.

The Noise Reduction Rating measures how effectively a hearing protector reduces noise exposure in decibels. A higher NRR provides greater protection against loud sounds. However, the NRR listed on packaging represents maximum attenuation under ideal conditions. To estimate real-world noise reduction, subtract 7 from the NRR and divide by 2. For example, earplugs with NRR 33dB provide approximately 13dB of actual noise reduction in typical use.

Both earplugs and earmuffs provide effective hearing protection when properly fitted. Foam earplugs offer high noise reduction ratings and work well in hot environments where earmuffs cause discomfort. Earmuffs are easier to put on and remove, making them ideal for intermittent noise exposure. For maximum protection in extremely loud environments, workers can wear earplugs and earmuffs together, adding approximately 5dB to the higher-rated device.

Roll the foam earplug into a thin cylinder between your fingers. Reach over your head with the opposite hand and pull your ear up and back to straighten the ear canal. Insert the compressed earplug and hold it in place for 20-30 seconds while the foam expands. A properly inserted earplug should sit flush with or slightly inside the ear canal opening.

Disposable foam earplugs should be discarded after each use to maintain hygiene and noise reduction performance. Reusable earplugs can be cleaned and worn multiple times but should be replaced when they show signs of wear, hardening, or damage. Earmuff ear cushions typically last 6-12 months with regular use before the foam degrades and seal quality diminishes.