Ill. Admin. Code tit. 50, § 9130.20 - Nature and Extent of Disability
a) The Workers' Compensation Commission shall
use the following rebuttable presumptions to determine percentage loss of
hearing in cases where the hearing loss was caused by exposure between July 1,
1975, and September 15, 1980:
b)
The percentage loss of hearing shall be calculated using the average, in
decibels, of the thresholds of hearing for the frequencies of one thousand, two
thousand and three thousand cycles per second. If such losses of hearing
average thirty decibels American National Standards Institute (ANSI) or less in
the three frequencies, such losses of hearing shall not constitute any hearing
disability. If the losses of hearing average eighty-five decibels (ANSI) or
more in the three frequencies, such losses of hearing shall constitute total
loss of hearing. Every average decibel loss exceeding thirty decibels (ANSI)
shall constitute 1.82 percent of loss of hearing.
c) Pure tone conduction audiometric
instruments shall be used for measuring hearing loss pursuant to this
guideline. Audiometric tests must not be conducted before a Petitioner has been
separated from noise exposure for 16 hours or more.
Notes
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