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Basic recording criterion:
Employers must record work-related “Standard Threshold Shift”, or STS
(an average change of 10 dB at 2000, 3000, and 4000 Hz in either ear,
compared to baseline; age-adjustments allowed) provided that the
employee’s average hearing level at the same frequencies in the same ear
is 25 dB HL or greater (an average hearing level of 25 dB or more,
regardless of employee’s age, i.e., no age adjustment allowed).
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Baseline/reference
audiogram: To determine
whether a STS has occurred, the employer must compare the current hearing
test results to the employee’s baseline audiogram. The baseline audiogram
is the employee’s original audiogram
or revised audiogram as defined under
OSHA’s noise standard 29 CFR 1910.95.
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Reconfirmation of STS:
If the annual audiogram shows a STS, a hearing retest may be performed
within 30 days. If the retest does not confirm the STS, then the case need
not be recorded. However, if the retest confirms the STS, then the STS if
work-related, must be recorded within 7 calendar days of retest. If a retest
is not performed, then the case (again, if work-related) must be recorded
within 37 days of test.
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Results of subsequent
testing: If later testing
performed as part of the hearing conservation program indicates that the STS
is not persistent, then the employer may erase or line-out the recorded
entry.
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Determination of
work-relatedness:
Work-relatedness must be determined according to specifications of section
1904.5 of the general recordkeeping rule. If an event/exposure in the
workplace caused or contributed to the shift in hearing or “significantly
aggravated” a previously existing hearing loss, then the STS is recordable.
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Forms: OSHA has
also updated its recordkeeping forms (now OSHA Form 300, 301 and
300A). Beginning January 1, 2004, employers will be required to
record hearing loss cases in a separate column. In 2003, employers
should record cases of occupational hearing loss as an “injury”
(single event acoustic trauma) or “other illness” (long term
noise exposure), as appropriate.
Click
here for OSHA's revised Form 300 Log of Work-Related Injuries
and Illnesses.
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State plans:
Although state-run OSHA plans were allowed to continue utilizing more
stringent enforcement criteria during 2002, all are required to adopt the
final federal rule for hearing loss recordability, effective January 1,
2003.
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Applicable industries:
Certain industries are not covered under the general hearing conservation
amendment 1910.95 (construction, agriculture, oil and gas drilling, etc.),
but are included under 1904. If such employers choose to conduct audiometric
testing programs, then the hearing loss recordability provisions of 1904.10
will apply.
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