Noise-induced hearing loss continues to be one of the most common occupational disorders, even in workplaces where workers are protected by hearing loss prevention programs (HLPPs). Although standards and regulations vary by country, virtually all hearing loss prevention programs require several elements: the measurement of noise exposures; the implementation of noise controls to reduce noise levels; conducting hearing tests on exposed workers; training of exposed workers; the use of hearing protection by exposed workers; and certain recordkeeping activities. See the NIOSH Occupational Noise Exposure Criteria Document and the Practical Guide for Preventing Occupational Hearing Loss for details about implementing a
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