For employees in high levels of industrial noise – that is, in an environment where the noise reaches or exceeds 85 dBA LAeq8h (evaluated by a qualified assessor using a sound level meter) – the employer is required to provide a noise control management strategy. This should include:
Under the model Work Health and Safety (WHS) regulations 2019, cited in the Safe Work Australia “Managing noise and preventing hearing loss at work” Code of Practice July 2020, employers are required to ensure that employees are not exposed to noise exceeding prescribed noise dose limits.
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Hearing tests for adults We provide a hearing screening test, which is a basic test of hearing levels. The test results will be explained to the employee, and a report sent to the employer, with a copy provided for the employee.
If the hearing screening test shows the presence of a hearing loss, or a drop in hearing levels compared to the last test, a full hearing assessment is required. As WorkSafe Victoria accredited audiologists, we are able to carry this out, and will provide a detailed report subsequently.
A noise induced hearing loss is the most common cause of tinnitus (noises heard in the ears).
For employees with normal hearing, there is a variety of hearing protection available in the form of ear plugs or ear muffs. They vary in the amount of protection provided, which should be matched to the noise dose in the workplace. Ear plugs need to fit correctly to be effective. We provide a range of custom made ear plugs to fit the unique shape of each person’s ear. These include solid silicon rubber plugs, or silicon “flat attenuation”plugs.
If the noise hazard is moderate (up to 100 to 105 dB leq 8), we can provide “flat attenuation” hearing protection in the form of a custom moulded earplug with an acoustic filter. They are designed to be worn all day and provide a baseline level of protection, with additional protection from ear muffs required for periods of exposure to higher noise levels. They allow easier communication once in place compared to solid earplugs, are easy to fit correctly, have a long life and are very comfortable to wear.
For employees with a hearing loss, there are safety issues in the workplace to consider. The use of conventional ear muffs and solid ear plugs will distort high frequency sounds, leading to reduced understanding of speech and reduced awareness of high frequency warning signals. Depending on the total noise dose the employee is experiencing, either active noise reduction (ANR) ear muffs or flat attenuation custom ear plugs are recommended.
Hearing protection supply companies, listed in the telephone directory under “Safety Equipment and Accessories”, have a range of ear muffs fitted with active noise reduction (ANR) electronics. These are designed to electronically amplify certain sounds, such as voices and warning signals, in a noisy environment. However, they are heavier and cost significantly more than conventional ear muffs.
An employee is entitled to submit a WorkSafe claim for a noise induced hearing injury. To obtain financial compensation, as well as hearing rehabilitation, the Binaural Percentage Loss of Hearing needs to equal or exceed 10%. Below 10%, assistance in hearing rehabilitation only is available.
Hearing rehabilitation involves identifying the person’s hearing needs and determining how they can best be met.
An Ear, Nose and Throat Specialist opinion is needed to determine the percentage of a hearing loss that is related to noise damage. Deductions can also made if part of the hearing loss is caused by conditions other than noise exposure.
Hearing rehabilitation following a successful WorkSafe Victoria claim includes: