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Concept
Occupational hearing loss
Summary
Occupational hearing loss (OHL) is hearing loss that occurs as a result of occupational hazards, such as excessive noise and ototoxic chemicals. Noise is a common workplace hazard, and recognized as the risk factor for noise-induced hearing loss and tinnitus but it is not the only risk factor that can result in a work-related hearing loss. Also, noise-induced hearing loss can result from exposures that are not restricted to the occupational setting.
OHL is a prevalent occupational concern in various work environments worldwide. In the United States, organizations such as the Occupational Safety and Health Administration (OSHA), the National Institute for Occupational Safety and Health (NIOSH) and the Mine Safety and Health Administration (MSHA) work with employers and workers to reduce or eliminate occupational hearing hazards through a hierarchy of hazard controls. OHL is one of the most common work-related illness in the United States. Occupational hearing hazards include industrial noise, and exposure to various ototoxic chemicals. Combined exposure to both industrial noise and ototoxic chemicals may cause more damage than either one would in isolation. Many chemicals have not been tested for ototoxicity, so unknown threats may exist.
A 2016 study by NIOSH found that the mining sector had the highest prevalence of hearing impairment at 17%, followed by the construction sector (16%) and the manufacturing sector (14%). The public safety sector had the lowest rate of hearing impairment, at 7%. Overall, audiometric records show that about 33% of working-age adults with a history of occupational noise exposure have evidence of noise-induced hearing damage, and 16% of noise-exposed workers have material hearing impairment. In the service sector the prevalence of hearing loss was 17% compared to 16% for all industries combined. Several sub-sectors however exceeded the overall prevalence (10-33% higher) and/or had adjusted risks significantly higher than the reference industry.
Official source
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