Hearing Loss Quiz

The baseline audiogram is the initial audiogram against which all future ones are compared, to yield a measure of hearing change.

Employers are required by OSHA to present baseline audiograms within six months of a worker’sfirst exposure to noise level equal to or exceeding an 8-hour TWA (Time Weighted Average) of 85 decibels. OSHA allows an exception only when employer makes use of a mobile test van for an audiogram, which allows for another six months of leeway, up to a year within the initial exposure to overly loud noise.