1. "Occupational hearing loss" means a permanent sensorineural loss of hearing in one or both ears in excess of twenty-five decibels if measured from international standards organization or American national standards institute zero reference level, which arises out of and in the course of employment caused by prolonged exposure to excessive noise levels.
In the evaluation of occupational hearing loss, only the hearing levels at the frequencies of five hundred, one thousand, two thousand, and three thousand Hertz shall be considered.
2. "Excessive noise level" means sound capable of producing occupational hearing loss.
[C81, § 85B.4]
Referred to in § 85.34
Iowa General Assembly
Search: Iowa Code 1997
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