If you operate a business in Australia with employees exposed to noise at or above 80 decibels, you have a legal obligation under Australian Work Health and Safety (WHS) regulations to provide workplace audiometric testing. Yet many employers remain uncertain about what this obligation entails, when it applies, how to comply, and what the process actually involves.

Over the past 15 years, I have conducted more than 4,000 workplace audiometric assessments across NSW, Victoria, Queensland, South Australia, Tasmania, and the Australian Capital Territory. I’ve worked with mining operations, construction companies, manufacturing facilities, agricultural businesses, transport companies, and food processing plants. I’ve seen what happens when employers get it right—and the costly consequences when they get it wrong.

This comprehensive guide distils that experience into a practical resource for WHS managers, HSE managers, HR managers, and operations managers who need to understand their hearing testing obligations, implement a compliant testing program, and protect their workforce from noise-induced hearing loss.

What is Workplace Audiometric Testing?

Workplace audiometric testing is a clinical procedure that measures an employee’s hearing sensitivity across a range of sound frequencies. It produces a detailed graph called an audiogram, which shows whether an employee can hear sounds at normal levels or whether hearing loss has occurred.

The test is non-invasive, pain-free, and typically takes 15–20 minutes to complete. The worker sits in a sound-treated booth wearing headphones and signals when they can hear a series of tones at different frequencies (measured in Hertz) and different volumes (measured in decibels). The audiometrist records the quietest sound the worker can detect at each frequency, and a computer plots this data onto an audiogram.

What makes audiometric testing “workplace” testing is its purpose: to establish a baseline of an employee’s hearing before noise exposure begins, and then to monitor that hearing over time to detect any deterioration caused by occupational noise exposure. This distinguishes it from routine hearing tests a person might have at their GP, which are diagnostic rather than occupational health surveillance tests.

Why Audiometric Testing Matters for Australian Employers

Noise-induced hearing loss (NIHL) is permanent and irreversible. Unlike some occupational health issues that improve when exposure is removed, hearing damage does not repair itself. An employee who loses 20 decibels of hearing sensitivity due to uncontrolled workplace noise exposure will carry that disability for the rest of their life—potentially affecting their quality of life, their ability to communicate, their safety at work, and their mental health.

From a legal and business perspective, audiometric testing serves three critical functions:

1. Baseline establishment: A baseline test conducted before significant noise exposure documents the worker’s pre-exposure hearing status. This protects the employer by creating an objective record against which future changes can be measured, and it protects the worker by establishing what their “normal” was at the time of employment.
2. Early detection: Monitoring tests conducted annually (or at the interval specified by regulations) can detect early signs of hearing damage before it becomes severe. This allows the employer to intensify controls, re-train the worker, or modify work practices before permanent damage occurs.
3. Regulatory compliance: Audiometric testing is a mandatory legal requirement in all Australian states and territories under WHS regulations. Failure to provide testing where required exposes employers to prosecution, significant penalties, and potential civil liability if an employee later claims hearing damage.

Why Audiometric Testing is Legally Required in Australia

Australia’s WHS regulatory framework is built on a model created by Safe Work Australia. Each state and territory has adopted and adapted this model, resulting in similar but not identical WHS laws across the country. What unites them is the requirement for audiometric testing in workplaces where noise exposure exceeds defined thresholds.

The Safe Work Australia Model

At the national level, Safe Work Australia publishes the Code of Practice: Managing Noise and Preventing Hearing Loss at Work (2020 edition). This document sets out the best-practice approach to noise management, including audiometric testing requirements. While the Code of Practice is not itself law, it carries significant weight in regulatory interpretation and is routinely cited by WHS inspectors and in court proceedings.

The Code of Practice makes clear that audiometric testing is part of a hierarchy of hearing protection controls:

1. Eliminate or substitute the noise source (remove the noisy equipment, replace it with quieter equipment, or modify the process)
2. Isolate the noise source (soundproof booths, enclosures, distance)
3. Control the noise at the worker (hearing protection equipment, administrative controls, job rotation)
4. Surveillance and monitoring (audiometric testing)

Audiometric testing sits at the bottom of the hierarchy because it is a surveillance tool, not a control. However, it is a mandatory surveillance tool where noise exposure is significant.

Regulation 58 and the Noise Action Level

The core legal requirement for audiometric testing comes from Regulation 58 in the Model WHS Regulations. This regulation (or its equivalent in each state’s WHS Act) requires that a PCBU (Person Conducting a Business or Undertaking—essentially the employer) must ensure that a worker exposed to noise at or above the “exposure action level” undergoes audiometric testing.

The “exposure action level” is defined as an 8-hour time-weighted average (TWA) noise exposure of 80 decibels. In other words, if a worker’s noise exposure averages 80 dB or more over an 8-hour shift, they must receive audiometric testing.

There is also a “further action level” set at 85 dB TWA, at which point additional controls and more frequent monitoring become mandatory.

Importantly, this is not a threshold where exposure below 80 dB does not matter. Exposure between 75 dB and 80 dB still poses a risk of hearing damage, and employers should still implement controls. However, audiometric testing is mandatory only at or above 80 dB.

Who Needs Audiometric Testing?

Determining whether your workers need audiometric testing requires two steps: first, assessing whether they are exposed to noise at or above 80 dB; second, confirming they are not exempt under WHS regulations.

Workers Requiring Audiometric Testing

Any worker exposed to an 8-hour TWA of 80 dB or more must receive audiometric testing. This includes:

• Full-time workers whose regular job involves exposure to noise at or above 80 dB
• Part-time and casual workers whose shift-average exposure reaches 80 dB or more
• Workers who spend part of their shift in high-noise areas and part in quieter areas, where the combined 8-hour average meets or exceeds 80 dB
• Supervisors and managers who spend time in high-noise areas, if their exposure reaches the action level
• Contractors and labour-hire workers, if they meet the exposure criteria

The key is the 8-hour TWA calculation. If a worker is in a 95 dB environment for 4 hours and a 70 dB environment for 4 hours, the TWA is approximately 85 dB, which exceeds the action level. Conversely, if exposure is episodic or intermittent—for example, a worker operates loud equipment for 2 hours per week in an otherwise quiet job—the 8-hour TWA may fall below 80 dB, and mandatory audiometric testing may not apply, though monitoring is still prudent.

Industries Requiring Audiometric Testing

Certain industries are almost universally above the 80 dB action level. These include:

• Mining: Underground and open-pit mining, mineral processing, quarrying
• Construction: Demolition, excavation, concrete cutting, pile driving, pneumatic tools
• Manufacturing: Metal fabrication, foundries, machinery operation, stamping, pressing
• Agriculture: Grain handling, combine harvesting, tractor operation, machinery maintenance
• Transport: Heavy vehicle maintenance, railway operations, aircraft maintenance, port operations
• Food processing: Meat processing, canning, bottling, high-speed packaging
• Entertainment: Live music venues, nightclubs, recording studios, public address system operation
• Utilities: Power generation, water treatment, waste management facilities

If your business operates in any of these industries requiring audiometric testing, you should assume that audiometric testing is required unless a detailed noise survey demonstrates otherwise.

Workers Who Do Not Require Routine Audiometric Testing

Workers whose 8-hour TWA noise exposure is below 80 dB do not fall under the mandatory audiometric testing requirement in Regulation 58. However, they may still benefit from baseline testing, and if they use hearing protection equipment (HPE), some regulations require testing to ensure the HPE is appropriate for their individual hearing characteristics.

Additionally, workers over 60 years of age may be offered audiometric testing as part of a health surveillance program, even if they do not meet the mandatory trigger.

State-by-State Audiometric Testing Compliance in Australia

While the underlying principle is consistent—audiometric testing is required for workers exposed to noise at or above 80 dB—each state and territory has its own WHS legislation and specific requirements. Understanding your state’s rules is essential for compliance.

New South Wales (NSW)

NSW adopted the Model WHS Regulations in 2011. Regulation 58 of the Work Health and Safety Regulation 2011 sets out the noise exposure and audiometric testing requirements.

From 1 January 2024, NSW introduced a revised clause 58 that strengthens the requirement. Under the updated regulation, employers must now arrange audiometric testing at the baseline and then at intervals no longer than two years (previously three years). The baseline must be conducted before or as soon as practicable after the worker begins exposure to noise at or above 80 dB.

NSW employers should note that the updated regulation also requires documentation of the audiometric testing results, including any abnormal findings, in the worker’s health surveillance record, and requires a documented review of noise controls if abnormalities are detected.

Victoria (VIC)

Victoria’s Occupational Health and Safety Regulations 2017 contain equivalent audiometric testing requirements. Regulation 375 sets out the mandatory testing regime for workers exposed to noise at or above 80 dB TWA.

In Victoria, the baseline test must be conducted before the worker is exposed to occupational noise, or within one month of commencing work. Subsequent monitoring tests must be conducted no less frequently than every two years. Victorian employers must maintain a register of all workers subject to audiometric testing and the results of their tests.

Victorian WHS inspectors have been active in enforcing these requirements, and several high-profile prosecutions have resulted in substantial penalties for employers who failed to provide audiometric testing where required.

Queensland (QLD)

Queensland’s WHS Regulation requires audiometric testing under similar circumstances. However, Queensland has extended the mandatory requirement. From 1 July 2025, Queensland is making audiometric testing mandatory for all workers exposed to noise above 80 dB, with a baseline test and then repeat testing every two years.

Queensland employers should be aware that this deadline is approaching. If you operate in Queensland and have not yet established a baseline audiometric testing program, you have until 1 July 2025 to do so.

South Australia (SA)

South Australia’s Work Health and Safety Act 2012 and associated regulations require audiometric testing for workers exposed to noise at or above 80 dB. The baseline test must be conducted before exposure begins or within one month of commencing work. Subsequent tests must be conducted at intervals set out in the Work Health and Safety Regulations 2012, typically every two years.

Tasmania (TAS)

Tasmania’s Work Health and Safety (Hearing Protection) Regulations require audiometric testing for workers exposed to noise at or above 80 dB. The requirement is aligned with the Model WHS Regulations, with baseline testing before exposure and subsequent tests at intervals no longer than two years.

Australian Capital Territory (ACT)

The ACT’s Work Health and Safety Regulation 2011 includes the same audiometric testing requirement. Workers exposed to noise at or above 80 dB must receive baseline testing and subsequent monitoring tests at least every two years.

Applying the State Requirements: A Practical Summary

For employers operating across multiple states, the safe approach is to apply the most stringent requirement across all locations. This typically means:

• Establishing a baseline audiometric test before or immediately upon commencement of work in a noise-exposed role
• Conducting monitoring tests no less frequently than every two years
• Maintaining comprehensive records of all testing, including dates, results, and any follow-up actions
• Reviewing noise controls whenever abnormal results are detected and documenting this review
• Ensuring that all results are kept confidential and handled according to privacy legislation

Understanding AS/NZS 1269.4:2014—The Testing Standard

Workplace audiometric testing must be conducted in accordance with Australian and New Zealand Standard AS/NZS 1269.4:2014 Occupational Noise Management – Audiometric Testing. This standard sets out the equipment, procedures, environment, and qualifications required to ensure that audiometric tests are accurate, reliable, and valid.

Why This Standard Matters

If an employer faces a claim from an employee alleging work-related hearing loss, the first question a court or tribunal will ask is: “Was audiometric testing conducted in accordance with AS/NZS 1269.4?” If the answer is no, the testing results become vulnerable to challenge, and the employer’s position weakens significantly. Conversely, testing conducted in full compliance with the standard provides a robust, defensible record of the worker’s hearing status at any given point in time.

Key Requirements of AS/NZS 1269.4:2014

Qualified Personnel: Audiometric testing must be conducted by a qualified audiometrist. In Australia, this typically means an audiologist registered with the Hearing Australia scheme or an audiometrist with formal qualifications in occupational audiometry. The person conducting the test must be trained in the use of the specific audiometric equipment and in occupational audiometric procedures.

Sound-Treated Environment: Testing must take place in an audiometric booth or sound-treated room that meets specified noise reduction criteria. Ambient noise levels in the test environment must not exceed certain thresholds, which vary by frequency. This ensures that the test measures the worker’s hearing sensitivity and not the ambient noise in the testing location.

Calibrated Equipment: The audiometer used must be calibrated according to international standards (IEC 60645-1 for conventional audiometry) and must be regularly checked for accuracy. Calibration must be performed by a qualified technician at least annually, and in-clinic validity checks must be conducted regularly.

Pre-Test Procedures: Before testing begins, the worker must receive instruction on how to signal when they hear tones. The audiometrist must confirm that the worker understands the test, that they are not fatigued or unwell, and that they do not have acute ear conditions (such as active infection or recent trauma) that would invalidate the test.

Pure Tone Audiometry Protocol: The test must be conducted at specific frequencies (typically 500 Hz, 1000 Hz, 2000 Hz, 3000 Hz, 4000 Hz, 6000 Hz, and 8000 Hz) presented in a standardised order. Sound pressure levels must range from very quiet (10 dB HL or lower) to loud (up to 120 dB HL) to establish thresholds accurately. Testing must be conducted in both ears and via both air conduction (earphone) and bone conduction (vibrator on mastoid process) pathways.

Test Validity Checks: The audiometrist must perform validity checks during testing to ensure that the worker is responding appropriately and that the results are reliable. If test validity is in doubt, the test may need to be repeated.

Documentation: The audiogram and all associated data must be clearly documented, including the date of testing, the name and credentials of the audiometrist, the equipment used, the calibration status, the ambient noise levels, and any comments on test reliability or worker condition.

What This Means for Employers Selecting a Testing Provider

When you arrange mobile audiometric testing, you should ask prospective providers whether they comply with AS/NZS 1269.4:2014. Specifically, you should verify:

• The qualifications of the audiometrist (ask for proof of registration or qualification)
• The specification of the portable audiometric booth or testing environment (ask whether it meets AS/NZS 1269.4 noise criteria)
• The calibration status and schedule for the equipment (ask for the most recent calibration certificate)
• The documentation and reporting format for results (ask to see a sample report)
• The data management and confidentiality procedures (ask how results are stored and protected)

Selecting a provider who fully complies with AS/NZS 1269.4 protects both your workers and your business.

Baseline vs. Monitoring Audiometric Tests

Workplace audiometric testing programs typically involve two types of tests: baseline tests and monitoring tests. Understanding the difference is crucial for compliance and for interpreting results.

Baseline Audiometric Test

A baseline test is the first audiometric test conducted for a worker who is about to begin or has just begun exposure to occupational noise. The purpose of the baseline is to document the worker’s hearing sensitivity before significant noise exposure occurs, establishing a reference point against which future changes can be measured.

Under Australian WHS regulations, the baseline test must be conducted:

• Before the worker begins exposure to noise at or above 80 dB, or
• As soon as practicable after commencing work in a noise-exposed role (typically within one month)

In practice, many employers conduct the baseline test within the first few weeks of employment as part of an induction process.

The baseline test takes on particular significance if a worker later develops hearing loss. When a court or tribunal is asked to assess whether work-related hearing loss has occurred, the baseline audiogram becomes the essential reference. If no baseline exists, the employer’s ability to defend itself against a hearing loss claim is severely compromised.

Monitoring Audiometric Tests

After the baseline is established, workers must undergo monitoring tests at regular intervals. Australian WHS regulations specify that monitoring tests must be conducted no less frequently than every two years (some states previously required every three years, but the trend is toward more frequent testing).

The purpose of monitoring tests is to detect any deterioration in hearing sensitivity since the baseline or previous monitoring test. The audiometrist compares the new audiogram against the baseline, looking for a significant change in threshold levels at any frequency—typically a decline of 10 dB or more at a single frequency, or 15 dB or more across multiple frequencies, which is considered a “standard threshold shift” (STS).

Detection of a standard threshold shift or any abnormal result triggers employer obligations, which are discussed in detail below.

Timing Considerations

When scheduling baseline or monitoring tests, timing matters for result accuracy. Audiometric testing should ideally be conducted at least 14 hours after the worker’s last exposure to loud noise. This is because temporary hearing threshold shifts (small, reversible changes in sensitivity) can occur immediately after noise exposure and may take many hours to recover. Testing conducted too soon after noise exposure may show artificially reduced sensitivity, which could be mistaken for permanent hearing loss.

For this reason, many employers schedule baseline tests on the worker’s first day before any workplace noise exposure occurs, or conduct monitoring tests at the start of a work week before the worker has re-accumulated noise exposure.

How Mobile On-Site Audiometric Testing Works

One of the most practical solutions available to Australian employers is mobile audiometric testing, in which a qualified audiometrist travels to your workplace to conduct testing on-site. This approach eliminates the need for workers to travel to an external clinic, reduces disruption to operations, and makes compliance easier to achieve.

The Mobile Testing Process: Step by Step

Step 1: Pre-Assessment and Planning

The mobile audiometric testing provider meets with you to discuss your workforce, noise-exposed roles, number of workers requiring baseline or monitoring tests, and preferred testing dates. The provider will confirm compliance with your state’s requirements, determine the number of testing sessions needed, and arrange logistics (vehicle parking, indoor space for the portable booth, electrical access, scheduling).

Step 2: Pre-Test Briefing of Workers

A few days before the testing day, workers are briefed about the testing process. They are informed that the test is painless, non-invasive, and straightforward; that it takes 15–20 minutes; and what time they are scheduled to attend. Workers are advised to avoid loud noise exposure for at least 14 hours before their scheduled test time, if possible, and to rest adequately.

Step 3: Setting Up the Portable Booth

The audiometrist arrives at your site and sets up a portable audiometric booth—a compact, sound-treated enclosure that meets AS/NZS 1269.4 specifications. The booth is typically placed in a quiet area (away from machinery, high-traffic areas, or external windows), and the audiometrist verifies that ambient noise levels meet the required standards.

Step 4: Individual Testing Sessions

Workers attend their scheduled testing time. The audiometrist greets the worker, explains the test procedure, and confirms they understand how to signal when they hear tones. The worker enters the booth, dons calibrated headphones, and the test begins.

The audiometrist sits outside the booth at the audiometer console, presenting tones at different frequencies and intensities in a standardised sequence. The worker raises their hand or presses a button each time they hear a tone. The audiometer records the threshold (the quietest level at which the worker responds) at each frequency.

Testing is conducted in both ears and typically via air conduction. If abnormalities are detected, bone conduction testing may also be performed. The entire process, from entry to exit, typically takes 15–20 minutes.

Step 5: Result Review with the Worker

After testing is complete, the audiometrist may briefly discuss the result with the worker, explaining in simple terms whether the audiogram is normal or whether abnormalities are detected. The audiometrist does not diagnose medical conditions but provides a clear explanation of what the test shows.

Step 6: Documentation and Reporting

A detailed report is prepared for each worker, including the audiogram, the date of testing, the audiometrist’s qualifications, equipment details, and any comments on test validity or abnormalities. Results are typically provided in both a confidential individual format (for the worker and your occupational health files) and a summary format (for your WHS records).

Step 7: Follow-Up Actions (If Required)

If abnormal results are detected, the testing provider typically recommends follow-up actions: repeat testing to confirm results, referral to an audiologist for further assessment, referral to occupational health services, or intensification of noise controls. These actions are discussed in detail in the section below on employer obligations.

Advantages of Mobile Audiometric Testing

• Convenience: Workers do not need to leave the worksite or travel to an external clinic, reducing administrative burden and minimising disruption to operations.
• Compliance assurance: A reputable mobile provider is familiar with state regulations and can ensure your program meets all compliance requirements.
• Cost-effective: Bulk testing of multiple workers on a single day or over a few days reduces per-worker costs compared to individual clinic visits.
• High response rates: When testing is on-site and scheduled during work hours, participation rates are typically much higher than when workers must arrange their own appointments at external clinics.
• Occupational context: Mobile audiometrists understand the occupational noise environment and can interpret results in that context, providing relevant recommendations.

Understanding Audiometric Test Results: How to Read an Audiogram

An audiogram can appear intimidating at first glance, with its array of symbols, lines, and frequency labels. However, once you understand the basics, reading and interpreting an audiogram becomes straightforward. This section demystifies the audiogram and explains what the results mean for your workplace.

The Audiogram Layout

An audiogram is a graph with two axes. The horizontal axis (left to right) shows frequency, measured in Hertz (Hz), ranging from low frequencies (500 Hz) to high frequencies (8000 Hz). The vertical axis (top to bottom) shows hearing level, measured in decibels (dB HL), ranging from -10 dB HL (very sensitive hearing) at the top to 120 dB HL (very poor hearing) at the bottom.

The audiometrist plots the results of testing by placing symbols on the graph at the intersection of each frequency tested and the intensity level at which the worker responded. The symbols differ by ear: typically, an “O” represents the right ear and an “X” represents the left ear. Lines are drawn connecting the points, creating a visual representation of the worker’s hearing sensitivity across frequencies.

Normal vs. Abnormal Audiograms

Normal Audiogram: A normal audiogram shows all thresholds at or above 0 dB HL (meaning the worker can hear very quiet sounds) and with minimal variation across frequencies. The lines for both ears should be relatively flat and should closely track each other. A normal audiogram typically shows all results clustered between -10 and +20 dB HL.

Abnormal Audiogram: An abnormal audiogram shows one or more of the following patterns:

• High-frequency hearing loss: A decline in sensitivity at higher frequencies (typically 4000 Hz to 8000 Hz) with preservation of sensitivity at lower frequencies. This pattern is characteristic of noise-induced hearing loss (NIHL). The hearing thresholds may show a 10, 15, 20, or greater dB decline at these frequencies compared to the baseline, or compared to expected age-related norms.
• Bilateral symmetrical loss: Similar hearing loss patterns in both ears, which is typical of NIHL due to symmetrical workplace noise exposure.
• Low-frequency hearing loss: A decline in sensitivity at lower frequencies (500 Hz to 2000 Hz), which may suggest conditions other than workplace noise (such as inner ear disease, infection, or systemic illness).
• Asymmetrical loss: Significantly different patterns between ears, which may suggest a condition requiring medical investigation.

Understanding Threshold Shifts

Regulatory guidance and occupational health practice define a “standard threshold shift” (STS) as:

• An increase (worsening) of 10 dB or more at a single frequency, or
• An increase of 15 dB or more across multiple frequencies, or
• A pattern consistent with noise-induced hearing loss (high-frequency emphasis) with a confirmed repeat test

The significance of detecting an STS is that it indicates a material change in hearing since the baseline or previous test, likely due to noise exposure or other workplace factors. This change triggers employer obligations, which are discussed below.

Age-Related Hearing Loss (Presbycusis)

It is important to note that hearing sensitivity naturally declines with age. An audiogram may show some high-frequency hearing loss simply due to the worker’s age, not due to occupational noise. Occupational health specialists account for this by comparing the worker’s results against age-matched normative data. An audiometrist conducting workplace testing should be able to explain whether observed changes are consistent with occupational noise exposure or whether they align with expected age-related changes.

Employer Obligations When Abnormal Results Are Detected

When an audiometric test reveals abnormal results or a standard threshold shift, the employer’s obligations intensify. Australian WHS regulations require a documented response to abnormal findings.

Immediate Actions

Notification and Confidentiality: The worker must be informed of the abnormal result in a sensitive and clear manner. Under privacy legislation, the worker’s audiometric results are confidential health information and must be treated as such. The employer should not disclose results to other workers or to external parties without the worker’s explicit consent.

Confirmation Testing: Where an abnormal result is detected, the testing provider may recommend confirmation testing—a repeat audiometric test conducted several days to several weeks later to ensure that the initial finding is accurate and not due to temporary threshold shift, test validity issues, or other transient factors. Confirmation testing is a prudent practice.

Occupational Health Assessment: If abnormal results are confirmed, the employer should refer the worker to an occupational health physician or occupational hygienist for assessment. This assessment may include:

• A more detailed occupational history, documenting the worker’s noise exposure over time
• An assessment of hearing protection equipment use and compliance
• A medical examination to rule out non-occupational causes of hearing loss
• Further audiological testing if indicated
• Advice on risk of further hearing loss and recommendations for management

Review of Noise Controls

Critically, Australian WHS regulations require the employer to review and, if necessary, modify noise controls whenever abnormal audiometric results are detected. This requirement is explicit in state regulations: the presence of abnormal results is a trigger for reassessing whether the current control measures are adequate.

The review should address:

• Noise source controls: Are there opportunities to eliminate or substitute the noise source, or to isolate the noise? Has equipment been upgraded, replaced, or modified to reduce noise?
• Administrative controls: Are workers rotating between noisy and quiet tasks? Are duty hours being managed to limit cumulative noise exposure? Is there effective supervision to ensure control compliance?
• Hearing protection equipment: Is the specified HPE appropriate for the frequency content and intensity of the workplace noise? Is the HPE correctly fitted and being worn consistently? Are workers being trained and supervised in proper use? Is the HPE being maintained and replaced when needed?
• Information and training: Are workers informed about the risks of noise exposure and the reasons for controls? Are they trained in proper HPE use and maintenance? Is there regular refresher training?

This control review should be documented and retained as evidence that the employer took action in response to the abnormal result. If the employer later faces a claim, the documentation of this review demonstrates a responsible, proactive response to the evidence of hearing damage.

Duty to Notify and Consider Referral

In some cases, an audiometric result may suggest a medical condition requiring further investigation. If the occupational health assessment or audiometrist raises concerns about a potential medical issue (such as a conductive hearing loss, a sudden sensorineural loss, or an asymmetrical loss), the employer should encourage the worker to seek medical review with their GP or an ear, nose, and throat (ENT) specialist.

While the employer is not obligated to mandate medical treatment, failing to inform the worker of the need for medical assessment, or discouraging the worker from seeking medical advice, exposes the employer to criticism and potential liability.

Record-Keeping Obligations

All actions taken in response to abnormal audiometric results must be documented and retained. The documentation should include:

• The abnormal result itself (audiogram and report)
• The date and nature of the worker’s notification
• Any confirmation testing conducted
• The occupational health assessment or medical referral
• The review of noise controls and any modifications made
• The outcome of the review and rationale for any control decisions
• Any follow-up actions planned and timeframes

These records should be retained in the worker’s occupational health file for at least the duration of their employment and, in some cases, longer to defend against future claims.

How to Organise Your Workplace Audiometric Testing Day: A Practical Checklist

Organising an on-site audiometric testing program requires planning and coordination. The following checklist will guide you through the essential steps.

Before the Testing Day

• Assess your workforce: Identify which workers are exposed to noise at or above 80 dB. This requires a noise survey or a review of noise levels in your workplace if one has already been conducted. If you do not have recent noise data, engage an occupational hygienist to conduct measurements.
• Determine baseline vs. monitoring needs: For each worker, determine whether this is their first (baseline) test or a monitoring test. Check your records to see when the worker’s last test was conducted (if any) and whether they are due for a repeat test.
• Calculate the number of tests: Count the total number of workers requiring testing. This drives the number of testing sessions needed and helps you plan scheduling and logistics.
• Select and engage a testing provider: Contact reputable mobile audiometric testing providers. Verify their compliance with AS/NZS 1269.4:2014, the qualifications of their audiometrists, their equipment specifications, and their state compliance expertise. Obtain a quotation and agree on dates and logistics.
• Arrange suitable space: Identify a quiet location at your workplace where the portable booth can be set up. The space should be away from machinery, high-traffic areas, and external windows. Ensure that electrical power is available and that there is an area for the audiometrist to set up the testing console and documentation.
• Plan the schedule: Work with the testing provider to develop a testing schedule. Typically, testing can be conducted at a rate of 4–6 workers per hour, depending on test complexity and whether repeat testing is needed. Allocate buffer time for any unforeseen delays. Communicate the schedule to workers and their supervisors well in advance.
• Inform workers: At least one week before the testing date, communicate to affected workers that testing will be conducted, why it is required, what the process involves, the date and time of their scheduled test, and any pre-test guidance (such as avoiding loud noise in the 14 hours before testing). Provide a contact point for workers who have questions or concerns.
• Prepare documentation: Gather current records of workers, their roles, noise-exposed status, and any prior test results. Prepare a sign-in sheet or log for the testing provider to record who has been tested. Clarify how results will be communicated to workers and when follow-up actions (if any) will be scheduled.
• Communicate with line managers: Ensure that line managers understand the importance of the testing program and that they facilitate worker participation. Address any concerns about operational disruption and confirm that workers will be released for testing without penalty.

On the Testing Day

• Facilitate setup: Ensure that the testing provider has clear access to the designated space, that electrical connections are ready, and that the space is as quiet as possible. Minimise non-essential activity and noise in the testing area during the day.
• Coordinate worker flow: Have a supervisor or HR representative manage the schedule, ensuring workers arrive at their scheduled times. Provide workers with clear directions to the testing booth and brief them on the process if they have not already received detailed information.
• Manage operational continuity: Communicate the testing schedule to all staff so that work can be planned around testing times. Avoid scheduling critical operations or maintenance work in the testing area during the testing window.
• Ensure confidentiality: Results are confidential health information. Ensure that the testing is conducted privately, that results are not discussed publicly, and that workers’ privacy is respected throughout the process.
• Monitor progress: Keep in touch with the testing provider to ensure the schedule is on track. Address any logistical issues that arise.

After the Testing Day

• Receive results and reports: Once testing is complete, obtain the individual audiometric reports for each worker tested. Confirm that the reports are clear, complete, and comply with AS/NZS 1269.4 requirements.
• Distribute results to workers: Arrange for individual results to be communicated to workers in a confidential manner. Many employers brief workers individually or in small groups, with a senior manager or occupational health professional present to explain the results and answer questions.
• File results securely: Retain the audiometric reports in secure, confidential occupational health files, accessible only to authorised personnel (usually HR, WHS, and occupational health staff). Do not leave results visible on notice boards or in accessible locations.
• Review for abnormalities: Review all audiometric results for any abnormal findings or standard threshold shifts. If abnormalities are detected, initiate the response procedures outlined above: notification to the worker, confirmation testing if indicated, occupational health assessment, and review of noise controls.
• Document and follow up: Document the overall testing program—who was tested, when, and what the outcomes were. Schedule any follow-up actions, such as confirmation testing or occupational health assessments, and communicate these plans to the relevant workers.
• Update your compliance register: Record the testing dates in your WHS compliance register so that you can track when the next monitoring test is due (typically two years later).

Audiometric Testing Costs in Australia and Return on Investment

Employers often ask: “What does audiometric testing cost, and is it worth it?” The answer involves understanding both the direct cost of testing and the much larger cost of non-compliance or failure to detect hearing damage.

Indicative Costs of Audiometric Testing

Mobile on-site testing: Mobile audiometric testing providers in Australia typically charge between $80 and $150 per worker for a baseline or monitoring test, depending on location, test complexity, and the number of workers being tested. Testing that requires drive time (regional locations) may attract a travel fee or a minimum group size.

For a company with 50 noise-exposed workers, a baseline testing program might cost between $4,000 and $7,500. A monitoring test of the same group two years later would cost the same. Over a 10-year period, assuming two monitoring cycles, the total cost of testing would be between $8,000 and $15,000.

Occupational health assessments: If abnormal results are detected and an occupational health assessment is recommended, additional costs may be incurred. An occupational health assessment by an occupational physician typically costs between $150 and $400 per worker, depending on the extent of the assessment.

Hearing protection equipment: While not strictly a cost of testing, effective hearing protection is an integral part of a hearing conservation program. Quality hearing protection equipment costs between $5 and $50 per set, depending on the type and durability.

Return on Investment: The Cost of Non-Compliance and Hearing Loss

The ROI calculation for audiometric testing becomes clear when you consider the cost of non-compliance and the consequences of undetected hearing damage:

Regulatory penalties: Australian WHS enforcement agencies (Safe Work NSW, WorkSafe Victoria, Workplace Health and Safety Queensland, SafeWork SA, WorkSafe Tasmania, and the ACT Workplace Safety Commissioner) have consistently prosecuted employers for failure to provide audiometric testing where required. Penalties for a single breach can range from $5,000 to $50,000 for an individual and significantly higher for corporations. A company with 100 noise-exposed workers who have not received audiometric testing for five years could face penalties of hundreds of thousands of dollars.

Workers’ compensation claims: An employee who develops hearing loss due to workplace noise exposure and who can demonstrate that the employer failed to provide audiometric testing, failed to implement adequate controls, or failed to warn the worker of the risk may claim workers’ compensation. Depending on the degree of hearing loss and the jurisdiction, a hearing loss claim might be worth between $10,000 and $50,000 or more. A company with a poor hearing protection history might face multiple claims.

Common law damages: In some cases, an employee may pursue a common law claim for personal injury against an employer for negligence in failing to protect hearing. These claims can result in damages well in excess of workers’ compensation entitlements, particularly if the employee can demonstrate that the employer was aware of the risk and failed to take reasonable precautions.

Operational and productivity costs: Employees with undetected hearing loss may experience reduced safety awareness (because they cannot hear warning signals or communication), reduced ability to work in team environments, increased stress, and reduced job satisfaction. Over time, hearing loss is associated with increased absenteeism and reduced productivity.

Reputational damage: A company that faces WHS prosecution for failure to protect worker hearing, or that has multiple employees claiming hearing damage, may suffer reputational damage affecting its ability to attract talent, secure contracts, and maintain customer confidence.

The ROI Calculation

Consider a hypothetical case: A manufacturing company with 60 noise-exposed workers has never implemented audiometric testing. The company conducts a baseline program (cost: $5,400 at $90 per worker) and then conducts repeat testing every two years (cost: $5,400 every two years).

In the baseline testing, two workers are found to have abnormal high-frequency hearing loss. The company investigates and discovers that hearing protection equipment has not been properly supplied or maintained. The company invests $3,000 in upgrading and re-supplying hearing protection equipment and $2,000 in worker training on proper use.

Total cost so far: $15,400 (baseline testing + occupational health assessments + equipment upgrade).

The company then implements an ongoing monitoring program, conducting repeat testing every two years at a cost of $5,400 per cycle.

Over 10 years, the cumulative cost of the testing program is approximately $27,400.

Compare this to the alternative: The company does nothing and continues current practices. Five years later, a former employee who was never tested and was not adequately protected files a workers’ compensation claim for hearing loss. The claim is accepted and costs the company $30,000 in benefits. The employee then pursues a common law claim for negligence, arguing that the company failed to implement the audiometric testing required by law. The common law claim results in a judgment of $50,000. The company also faces a WHS prosecution with penalties of $75,000 and legal costs of $20,000.

Total cost of inaction: $175,000+.

In this realistic scenario, the ROI of implementing a compliant audiometric testing program is substantial—every dollar spent on testing and related controls saves the company multiple dollars in avoided penalties, claims, and associated costs.

Audiometric Testing Cost in Australia: Value Perspective

When evaluating the audiometric testing cost in Australia, consider it not as a discretionary expense but as an essential element of legal compliance and risk management. The cost of testing is small compared to the cost of non-compliance, and the investment protects both your workforce and your business.

WHS Record-Keeping and Compliance Documentation

Audiometric testing is only valuable if results and related actions are properly documented and retained. Australian WHS regulations require specific records to be maintained.

What Records Must Be Kept

Audiometric testing records: For each worker who undergoes audiometric testing, you must retain:

• The original or certified copy of the audiometric test result (audiogram)
• The date of testing
• The name and qualifications of the audiometrist
• The equipment used and its calibration status
• Any comments on test validity or the worker’s condition at time of testing
• Baseline vs. monitoring test designation

Noise exposure assessment records: You should retain records of the noise level assessments or surveys that justified the requirement for audiometric testing. These might include:

• Noise survey reports identifying areas and jobs with noise levels at or above 80 dB
• Sound level measurements by frequency and location
• Occupational exposure profiles for workers in different roles

Control measures documentation: Keep records of the hearing protection equipment and other controls implemented, including:

• Types of hearing protection equipment supplied to each worker or group
• Training records for workers on hearing protection and noise risks
• Fitting and compliance verification records if custom-moulded or precision-fitted ear protection is used
• Equipment maintenance and replacement schedules

Response to abnormal results: If abnormal audiometric results are detected, maintain records of:

• The abnormal result and how the worker was notified
• Any confirmation testing conducted
• Occupational health assessments or medical referrals
• The review of noise controls conducted in response to the abnormal result
• Any modifications made to controls and the rationale for decisions made

How Long Records Must Be Retained

Australian WHS regulations typically require that records related to worker health and safety be retained for a minimum period. For audiometric testing records, the general principle is that records should be retained for at least as long as the worker is employed, and preferably longer (typically 5–10 years) to defend against future claims.

If a worker makes a claim for hearing loss years after leaving employment, you may need to produce audiometric records to defend yourself against the claim. Therefore, retention for a lengthy period is prudent.

Confidentiality and Privacy

Audiometric testing records contain sensitive health information. They must be handled in accordance with privacy legislation and must be kept confidential. Access should be restricted to authorised personnel (typically WHS staff, occupational health professionals, and HR staff with a legitimate need to access the information).

Results should not be disclosed to other workers, posted on notice boards, or discussed in public or group settings without the worker’s explicit consent. If the employer is required to disclose results to a WHS regulator as part of an investigation or inspection, that disclosure should be kept confidential to the extent possible.

Frequently Asked Questions: Workplace Audiometric Testing in Australia

1. Is audiometric testing really mandatory for my business?

If you employ workers exposed to noise at or above 80 dB (8-hour time-weighted average), yes, audiometric testing is mandatory under Australian WHS regulations. The requirement applies in all Australian states and territories. Non-compliance can result in prosecution, penalties, and civil liability.

2. How do I know if my workers are exposed to noise at or above 80 dB?

You need to conduct a noise survey or review existing noise monitoring data for your workplace. A qualified occupational hygienist can measure noise levels in different areas and estimate workers’ exposure based on their job tasks. If you are unsure whether your workplace meets the 80 dB threshold, consult an occupational hygienist.

3. Does every worker in my company need audiometric testing?

No, only workers exposed to noise at or above 80 dB require mandatory testing. Workers in quiet office environments or those whose noise exposure is below 80 dB do not fall under the mandatory requirement, though baseline testing can still be valuable for their records.

4. How often does audiometric testing need to be done?

A baseline test must be conducted before or soon after a worker begins exposure to occupational noise. Subsequent monitoring tests must be conducted no less frequently than every two years. Some employers conduct testing more frequently (annually) in high-risk environments.

5. What is the difference between baseline and monitoring audiometric testing?

Baseline testing documents a worker’s hearing before significant occupational noise exposure. Monitoring testing, conducted at regular intervals thereafter, detects any change in hearing sensitivity. Both are essential components of a compliant hearing conservation program.

6. What if I find abnormal results—what am I legally required to do?

When abnormal results are detected, you must: (1) inform the worker confidentially; (2) consider confirmation testing; (3) arrange an occupational health assessment if indicated; and (4) review your noise controls to identify whether changes are needed. Documenting these actions is critical.

7. Can an employee refuse to undergo audiometric testing?

In most jurisdictions, if an employee is exposed to noise at or above 80 dB, they cannot refuse a mandatory audiometric test. However, some employees may be uncomfortable with the procedure or may have concerns about privacy. Clear communication about the purpose, process, and confidentiality of testing can address these concerns. If an employee has a genuine medical reason for not undergoing testing (e.g., active ear infection), alternative arrangements or timing can be considered.

8. Is audiometric testing expensive?

Mobile audiometric testing in Australia typically costs between $80 and $150 per worker. For a company with 50 workers, a baseline testing program might cost between $4,000 and $7,500. This is a relatively small investment compared to the cost of non-compliance or the consequences of undetected hearing loss.

9. Can testing be conducted off-site, or must it be on-site?

Testing can be conducted either on-site (using mobile testing services) or off-site at an occupational health clinic. On-site mobile testing is often more practical because it minimises disruption to operations and maximises worker participation.

10. What should I do if an employee has already left the company but I discover they had abnormal audiometric results that were never addressed?

Document what occurred and when you became aware of it. If the employee is contactable, consider notifying them in writing that abnormal results were detected and recommending that they seek a medical assessment. Retain this documentation. In the future, implement systems to ensure that abnormal results are identified and acted upon promptly, before the employee leaves the company.

11. How long should I keep audiometric test records?

Retain records for at least as long as the worker is employed, and preferably for 5–10 years after employment ends. These records may be needed to defend against hearing loss claims made years after employment ceases.

12. Can I use the same mobile testing provider every time, or should I rotate providers?

You can use the same provider consistently, which has the advantage of familiarity and continuity. However, if you have concerns about a provider’s compliance, accuracy, or service quality, it is reasonable to seek alternative providers. Consistency can be helpful in ensuring that testing is conducted in a standardised manner and that results are directly comparable over time.

13. What happens if an audiometric test shows that an employee’s hearing has worsened significantly?

If a standard threshold shift or significant deterioration is confirmed, follow the protocol outlined above: notify the worker, consider occupational health assessment, and review controls. The discovery of worsening hearing is a signal that current controls may be inadequate and that intensification is necessary. This might involve upgrading hearing protection, redesigning work tasks, or implementing additional administrative controls.

14. Are there any exemptions to the audiometric testing requirement?

Workers not exposed to noise at or above 80 dB are exempt from the mandatory requirement. In some cases, workers with pre-existing hearing loss may be exempt from certain aspects of hearing conservation programs, though this should be assessed on an individual basis with occupational health advice. Generally, there are few exemptions; the requirement is broad and applies to most noise-exposed workers.

15. What if I cannot arrange audiometric testing for logistical reasons (e.g., workers spread across multiple remote sites)?

Logistical challenges do not excuse non-compliance. Options include: (1) bringing workers to a central location for testing; (2) arranging testing at multiple sites over a period of time; (3) using a mobile service that travels to different locations; or (4) arranging testing at an external occupational health clinic. WHS regulators expect employers to find practical solutions to ensure that all workers receive the testing they are entitled to.

16. How does audiometric testing fit into a broader hearing conservation program?

Audiometric testing is one component of a comprehensive hearing conservation program that also includes: noise assessment and measurement; implementation of noise controls; provision of hearing protection equipment; training and supervision; monitoring and compliance verification; and health surveillance. Audiometric testing provides the surveillance component, allowing early detection of hearing damage so that controls can be intensified if necessary.

Take Action: Implement Compliant Audiometric Testing Today

If you operate a business in Australia with noise-exposed workers, audiometric testing is not optional—it is a legal obligation. Delaying implementation exposes your business to regulatory penalties, worker claims, and reputational risk. More importantly, it leaves your workers vulnerable to preventable hearing damage.

The pathway forward is straightforward:

1. Assess your workforce: Identify workers exposed to noise at or above 80 dB. If you do not have recent noise data, conduct a noise survey.
2. Select a qualified provider: Engage a mobile audiometric testing provider who complies with AS/NZS 1269.4:2014 and understands your state’s WHS requirements.
3. Establish baseline tests: Conduct baseline audiometric testing for all affected workers before significant noise exposure occurs.
4. Implement monitoring: Schedule repeat testing every two years to detect any deterioration in hearing.
5. Respond to abnormal results: When abnormal findings are detected, review controls and take action to prevent further damage.
6. Document everything: Maintain comprehensive records of testing, results, and follow-up actions.

At Anitech, we provide mobile audiometric testing services across NSW, VIC, QLD, SA, TAS, and ACT. Our audiometrists are fully qualified, our equipment complies with AS/NZS 1269.4:2014, and we understand the WHS requirements in every state.

Book a mobile audiometric testing assessment with Anitech today. Visit audiometrictesting.net.au to arrange a consultation, discuss your workforce needs, and schedule your testing program.

Protecting your workers’ hearing is protecting your business. Let us help you achieve compliance and keep your team safe.

About the Author

Isaac Patturajan, MAIOH is a Member of the Australian Institute of Occupational Hygienists with 15 years of experience in occupational health and safety, specialising in hearing conservation and audiometric testing. He has conducted more than 4,000 workplace audiometric assessments across Australian industries and has worked extensively with employers to develop compliant hearing conservation programs. Isaac holds qualifications in Occupational Hygiene and has provided expert advice to WHS regulators, industry bodies, and legal representatives on hearing loss and occupational noise exposure.