Hearing Protection
Hearing protection refers to devices and practices designed to reduce noise exposure and protect the cochlea from damage caused by loud sound. Prolonged or repeated exposure to sounds above 85 decibels can permanently damage the hair cells of the cochlea, causing noise-induced hearing loss. Common types of hearing protection include foam earplugs, earmuffs, and custom-molded ear plugs.
Foam plugs and earmuffs are widely available and appropriate for general occupational use. Custom-molded hearing protection is fitted to the exact shape of the individual's ear canal and provides a more consistent and comfortable seal. Specialty options include musician's earplugs, which reduce volume without altering the clarity of sound, and filtered devices for hunters and shooters.
In Canada, occupational noise exposure limits are governed by federal and provincial regulations. Workers exposed to sustained noise at or above 85 dB over an eight-hour workday are generally required to wear hearing protection. The Canadian Centre for Occupational Health and Safety (CCOHS) provides guidance on hearing conservation programs for workplaces.
