Professional hearing protection earmuffs are worn over the ears help to protect workers' hearing when used correctly. OSHA guidelines state that any worker exposed to 85 or more decibels of sound over an 8 hour period should have hearing protection to reduce the risk of permeant damage to the worker's hearing. Safety earmuffs are offered in a variety of styles including headband earmuffs, multiple position earmuffs, hard hat earmuffs and behind-the-head earmuffs.