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.

In this article, we’ll examine hearing loss and leading causes, an overview of the history of hearing protection, and seven elements that workplaces should consider when implementing a Hearing Conservation Program (HCP) or Hearing Loss Prevention Program (HLP).