Introduction: Records as Evidence

An audiometric testing program is only as credible as the records it generates. If a regulator inspects, or if a worker claims hearing loss years after employment, the records are the evidence of what was (or was not) done.

Regulation 58 does not explicitly specify a records retention period, but best practice and regulatory expectations are clear: audiometric testing records must be retained for at least 30 years from the test date. This reflects the long latency of NIHL and the possibility of workers’ compensation claims years or decades after exposure ceases.

This guide explains what records must be kept, how to store them securely, who can access them, privacy obligations, and how to manage records through business changes.

What Records Must Be Kept?

Essential Components of Audiometric Test Records

Each audiometric testing event should generate a record file containing:

• Worker identification: Full name, date of birth, employee ID, current role/occupation, department/work area
• Test date and time: Exact date and time of the test
• Tester information: Tester’s name, qualifications (degree, registration number), professional credentials, accreditation details
• Testing location: Address or description of where test was conducted
• Sound booth details: Booth certification/accreditation, ambient noise level measurements, booth compliance with AS/NZS 1269.4:2014
• Audiometer details: Make, model, serial number, last calibration date, calibration due date, daily biological check results
• Test type: “Baseline” or “Monitoring (annual, biennial, etc.)”
• Prior baseline/monitoring test date: For monitoring tests, reference to the previous test for comparison
• Hearing thresholds: Audiogram showing dB HL at each test frequency (500 Hz to 8000 Hz)
• Test validity assessment: Was the test valid? Any anomalies or factors affecting reliability?
• Comparison to baseline: For monitoring tests, quantitative or qualitative comparison showing whether thresholds have changed
• Significant threshold shift notation: If STS is present, clear indication and calculation of dB change at affected frequencies
• Tester’s recommendations: Any recommendations (referral for medical assessment, review of controls, intensified monitoring)
• Worker notification: Record that the worker was informed of results (date, method)

Associated Documentation

Beyond the individual test record, maintain supporting documentation:

• Noise assessment report: The assessment identifying exposure levels and which workers meet Regulation 58 criteria
• Worker identification list: The documented list of workers in noise-exposed roles and the rationale for inclusion
• Testing schedule: Documented schedule showing baseline dates and monitoring schedules for each worker
• Testing provider credentials: Documentation of the provider’s accreditation, tester qualifications, compliance with AS/NZS 1269.4:2014
• Equipment calibration records: Audiometer calibration records (daily biological checks, 6-monthly electroacoustic, annual full calibration)
• Communication records: Evidence that workers were informed about the program, informed of results, referred for further assessment if STS detected
• Control review records: If deterioration is detected, records showing that noise controls were reviewed and any changes made

The 30-Year Retention Requirement

Why 30 Years?

Noise-induced hearing loss has a long latency. A worker exposed to high noise for 10 years may not recognize or claim the hearing loss until years or decades later, after they have left the employer. The 30-year retention period ensures that records are available to defend against (or validate) retrospective NIHL claims.

Workers’ compensation claims for NIHL have been made 20, 30, even 40 years after initial exposure. Having records from the initial employment period is invaluable in such cases.

Legal Basis

While Regulation 58 does not explicitly state 30 years, this has become the accepted standard across Australian jurisdictions. Safe Work Australia guidance reflects this practice. Workers’ compensation law also expects employers to retain records for this period.

Practical Implications

30 years is longer than the typical employment duration. This creates a challenge: how to retain records for workers who have left the organization, particularly if the organization changes ownership or winds up?

Secure Storage: Physical and Digital

Physical Records

If records are maintained in physical form (paper audiograms, documents), they must be stored in a secure location with:

• Limited access (restricted to necessary personnel: occupational health staff, WHS managers, HR)
• Secure filing (locked cabinets or secure room)
• Protection from water, fire, and environmental damage
• Organization and indexing for easy retrieval

Digital Records

Most organizations now maintain digital records. Digital storage offers advantages (easy retrieval, searchability, backup capability) but requires security measures:

• Access controls: Password protection and role-based access (only occupational health and WHS personnel can access)
• Encryption: Records should be encrypted, particularly if stored on cloud platforms
• Backup and disaster recovery: Regular backups to prevent loss due to system failure, cyber-attack, or natural disaster
• Audit trail: System should log who accessed what records and when

Hybrid Approach

Many organizations maintain both physical copies (as a legal backup) and digital copies (for ease of access and management). If adopting a hybrid approach:

• Digitize records promptly after receipt
• Maintain physical copies for 5–7 years (statute of limitations for most claims)
• After that period, maintain digital copies only
• Ensure digital and physical versions match

Privacy Obligations: Health Records Act and Privacy Act

Privacy Act 1988 (Cth)

Audiometric test results are personal health information covered by the Privacy Act. The Privacy Act requires that:

• Personal health information is collected only for a lawful purpose (in this case, WHS compliance)
• Information is kept secure and confidential
• Individuals have access to their own information upon request
• Information is not disclosed to third parties without consent (with limited exceptions)

State Health Privacy Laws

Each state has its own health privacy legislation (e.g., Health Records Act 2001 (Vic), Privacy Act 2014 (NSW)). These impose similar obligations and often have stronger protections than the national Privacy Act.

Who Can Access Records?

• The worker: Has a right to access their own audiometric test results and records. This right should be honored promptly (typically within 30 days).
• The employer: Has access for WHS management and compliance purposes.
• WHS regulators: Have right of access during an inspection.
• Workers’ compensation insurer: May have access to determine eligibility for NIHL claims.
• Other workers: Do NOT have access to another worker’s individual results (confidentiality must be maintained).
• Third parties: Generally do NOT have access without consent, with limited exceptions (e.g., legal proceedings, with worker’s consent).

Practical Privacy Management

• Store records separately from other employment records
• Restrict access to a need-to-know basis (occupational health staff, WHS managers, HR benefits admin only)
• Do not disclose individual results to site managers, supervisors, or coworkers
• Provide aggregate, anonymized data to management if trend information is needed (e.g., “15 workers at facility X have undergone baseline testing; none show STS”)
• Have a process for workers to access their own results (provide upon written request)

Managing Records Through Business Changes

Business Sale or Acquisition

If the organization is sold, acquired, or merged, what happens to audiometric testing records?

• New owner’s obligation: The new owner becomes the PCBU and assumes responsibility for ongoing WHS compliance, including continuing the audiometric testing program and retaining historical records.
• Records transfer: Historical records should be transferred to the new owner. This should be specified in the sale agreement.
• Continuity: The new owner should assume that the 30-year retention obligation continues from the original test dates, not from the acquisition date.
• Access for workers: Workers’ right to access their own results should continue under the new owner.

Business Wind-Up or Closure

If the organization winds up or ceases operations, records must still be retained:

• Responsibility: The winding-up entity (directors, liquidator) becomes responsible for record retention.
• Practical approach: Records may be transferred to an archival service, a legal custodian, or the workers’ compensation insurer. An arrangement should be made to ensure records can be accessed if needed.
• Worker notification: Workers should be informed of where their records are stored and how to access them.

Critical Concern: Records Lost in Business Changes

A common problem: records are lost, destroyed, or inaccessible during business changes. To prevent this:

• Include record management obligations in sale/acquisition agreements
• Maintain a master list of all workers who have undergone testing, with dates and locations of records
• Before business closure, arrange for record transfer or archival
• Notify workers of the location of their records before the business closes

Record-Keeping System: Practical Structure

Recommended System Structure

• Master worker list: Database or spreadsheet with all noise-exposed workers, baseline dates, monitoring schedule, testing provider contact info
• Individual worker files: Digital folder for each worker containing all baseline and monitoring test reports, communication records, referral records
• Chronological audit trail: Log showing: test date, worker, test type, result summary, any STS, referrals or follow-up actions
• Testing provider documentation: Credentials, accreditation, calibration records, sound booth certification (in a separate file for reference)
• Compliance documentation: Noise assessment, worker identification rationale, testing schedule, communication records with workers

Technology Solutions

Several occupational health and WHS software platforms offer audiometric testing record management. Key features to look for:

• Automated monitoring schedule reminders (alerts when tests are due)
• Baseline-to-monitoring comparison reports
• STS detection and flagging
• Access controls and audit trail
• Worker portal (workers can view their own results)
• Export capability (for regulator requests or business transitions)

Auditor Verification: What Regulators Look For

During a WHS inspection or audit, regulators will request documentation. They typically verify:

• Is there a master list of noise-exposed workers?
• For each worker listed, is there a baseline test on file?
• Are monitoring tests conducted on schedule (every 2 years)?
• Are records well-organized and easily retrievable?
• Are records complete (all required elements present)?
• Do records show compliance with AS/NZS 1269.4:2014?
• Are there records of notification to workers of results?
• If STS is detected, are there records of follow-up actions?

Disorganized records, missing elements, or inability to quickly produce requested documentation suggests non-compliance and weakens the employer’s position in an enforcement scenario.

Internal Links: Related Compliance Areas

• WHS audiometric testing requirements across Australia
• Full explanation of Regulation 58
• Baseline vs monitoring tests and record linkage

Conclusion

Audiometric testing records are critical evidence of WHS compliance and worker health protection. Records must be comprehensive, secure, and retained for at least 30 years. They must be maintained with proper privacy controls, accessible to workers upon request, and readily available to regulators.

A well-organized record-keeping system demonstrates due diligence and provides legal protection in the event of future claims or regulatory action. Digital systems, with secure access controls and automated scheduling, are increasingly standard and offer efficiency advantages.

For organizations planning a business transition (sale, closure, merger), record management should be addressed explicitly to ensure continuity and compliance beyond the transition.