In most countries, hearing protectors are required by law to be tested and labeled in a specific way. The idea is that by using a standardized measurement method and a straightforward, one-number rating, it should help users decide which hearing protector to choose. However, it turns that one number often doesn’t tell the whole story.

When loud noises cannot be reduced or eliminated through engineering controls, workers who are exposed to them must use hearing protection devices (HPDs) to conserve their hearing. This notion is not new, nor is the concept that HPDs require fit-testing to be effective.

Millions of workers are exposed to hearing hazards every year, and even though OSHA regulations and NIOSH recommendations in the U.S. specify hearing protection, occupational hearing loss is still the number one reported worker illness in manufacturing*.

Excessive noise is prevalent across industries. From manufacturing to construction, agriculture to oil and gas, more than 22 million U.S. workers are exposed to hazardous noise each year.1 Wherever unsafe levels of noise exist, employers are responsible for providing hearing protection devices (HPDs).