Resources
Useful information on workplace hearing testing, Australian noise standards, and hearing conservation.
Provider Comparison Cheat Sheet
For WHS managers, HR, risk & compliance, and procurement. Five questions to ask any audiometric testing provider — and what the answers should tell you.
Key Concepts
What Is Noise-Induced Hearing Loss (NIHL)?
NIHL is permanent damage to the tiny hair cells in the inner ear caused by exposure to loud noise over time. It is the most common occupational disease in Australia — and entirely preventable. Unlike many other injuries, hearing loss develops slowly and is often not noticed until significant damage has already occurred.
The Hierarchy of Noise Controls
Under WHS legislation, noise must be controlled using the hierarchy of controls: Elimination (remove the noise source), Substitution (quieter machinery), Engineering controls (barriers, enclosures), Administrative controls (job rotation, quiet zones), and finally PPE (hearing protection). Audiometric testing monitors the effectiveness of these controls — not a substitute for them.
Significant Threshold Shift (STS)
A Significant Threshold Shift is a defined change in hearing threshold between two tests that exceeds the criteria specified in AS/NZS 1269.4. When an STS is detected, employers are required to investigate the cause, review noise controls, and may need to refer the worker for further audiological assessment.
Baseline vs Monitoring Tests
A baseline audiogram is conducted before or very early in a worker's noise-exposed role — ideally before any occupational noise exposure. Monitoring audiograms are conducted periodically thereafter and compared to the baseline to detect any deterioration in hearing thresholds. Both types are required under Australian hearing conservation programs.
External Resources
Safe Work Australia — Noise
RegulatorThe central source for Australian workplace noise guidance, including fact sheets, codes of practice, and legislation overviews.
Visit →Model Code of Practice: Managing Noise and Preventing Hearing Loss at Work
Code of PracticeThe national code of practice outlining how employers should identify, assess, and control noise risks.
Visit →AS/NZS 1269 Occupational Noise Management Series
StandardThe Australian/New Zealand standard series covering measurement, assessment, and audiometric testing. Available from Standards Australia.
Visit →Audiological Society of Australia
Professional BodyProfessional body for audiologists. Useful for finding registered audiologists for worker referrals and further assessment.
Visit →WorkSafe Victoria — Hearing
Regulator (VIC)Victoria-specific guidance on noise in the workplace, including compliance obligations and control measures.
Visit →SafeWork NSW — Noise at Work
Regulator (NSW)NSW-specific resources including noise exposure assessment guides and health monitoring requirements.
Visit →Need Help Understanding Your Obligations?
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