Workplace Noise Assessment Requirements: A Victorian Employer’s Guide

Workplace noise exposure is one of the most common occupational health hazards in Victoria, affecting workers across manufacturing, construction, mining, and many other industries. Understanding noise testing Victoria requirements isn’t just about regulatory compliance—it’s about protecting your workers from permanent hearing damage. This guide explains when noise assessments are required, what they involve, and how to meet your obligations under Victorian law.

When is a Noise Assessment Required?

Under Victoria’s Occupational Health and Safety Regulations 2017, employers must assess noise exposure when it’s likely that workers are exposed to noise above the exposure standard. But how do you know if this applies to your workplace?

You should conduct a noise assessment if:

• Workers need to raise their voice to communicate at arm’s length (approximately 1 metre)
• Workers experience temporary hearing loss or ringing in the ears after work
• Equipment or processes generate obvious loud noise (machinery, power tools, impact processes)
• Workers in adjacent areas report noise concerns
• You’re required to do so under specific industry regulations or codes of practice
• There have been changes to plant, equipment, or work processes that may affect noise levels

If any of these indicators apply, a formal workplace noise assessment conducted by a competent person is required. The assessment determines whether workers are exposed above the exposure standard and identifies appropriate control measures.

Victorian Exposure Standards Explained

Victoria’s workplace noise exposure standards are designed to protect most workers from noise-induced hearing loss. The standards, specified in the OHS Regulations 2017, are:

LAeq,8h of 85 dB(A): This is the maximum eight-hour equivalent continuous A-weighted sound pressure level. If worker exposure averaged over an eight-hour day exceeds 85 dB(A), employers must implement controls.

LC,peak of 140 dB(C): This is the peak C-weighted sound pressure level. Any single noise event exceeding 140 dB(C)—such as from explosive-powered tools, drop forges, or sudden impacts—poses an immediate risk of permanent hearing damage.

It’s important to understand that these standards don’t represent a safe threshold—they represent the upper limit of acceptable exposure. Hearing damage can accumulate below these levels, particularly for workers with previous exposure or other risk factors. Best practice is to reduce noise exposure as low as reasonably practicable.

The regulations also reference AS/NZS 1269.1:2005 Occupational noise management, which provides detailed guidance on measurement and assessment techniques for workplace noise.

What a Compliance Assessment Includes

A thorough workplace noise assessment for regulatory compliance typically includes:

Noise measurements: Using calibrated sound level meters and/or personal noise dosimeters to accurately measure noise levels throughout the workplace. Measurements should cover all relevant work areas, tasks, and time periods.

Exposure calculations: Calculating worker noise exposures for comparison against the exposure standards, accounting for shift length variations and different work patterns.

Source identification: Identifying the primary noise sources contributing to worker exposure—specific machines, processes, or work activities that generate the most significant noise.

Control recommendations: Recommending appropriate noise control measures following the hierarchy of controls—elimination, substitution, engineering controls, administrative controls, and personal hearing protection.

Documentation: Providing a comprehensive report documenting measurement methods, results, exposure calculations, and recommendations.

Assessments should be conducted by people with appropriate skills and experience in workplace noise measurement—they don’t necessarily need to be occupational hygienists, but competence in the specific requirements of noise assessment is essential.

How Often Should You Test?

Noise assessments aren’t a one-time requirement. The OHS Regulations require that assessments be reviewed and, if necessary, revised when:

• There’s reason to believe the assessment is no longer valid
• Significant changes occur to plant, processes, or work organisation
• New information about noise hazards or controls becomes available
• An incident or health monitoring indicates potential issues

Best practice is to conduct a full noise assessment:

• At least every five years for stable workplaces
• Following any significant changes to plant or processes
• When new equipment is installed
• If workers report hearing problems or concerns
• When audiometric testing identifies workers with standard threshold shifts

Regular monitoring ensures your noise management program remains effective and your workers continue to be protected.

Documenting Your Noise Assessment

Proper documentation is essential for demonstrating compliance and managing workplace noise effectively. Your noise assessment records should include:

Assessment scope and methodology: What areas, tasks, and workers were assessed, what equipment was used, and how measurements were conducted.

Measurement results: Detailed presentation of noise levels measured, including area measurements, task-based measurements, and personal exposure results.

Exposure calculations: How worker exposures were calculated, including assumptions made about task durations and work patterns.

Comparison against standards: Clear statement of which workers or work areas exceed exposure standards.

Control recommendations: Specific, actionable recommendations for reducing noise exposure.

Action plan: Timeline and responsibility for implementing recommended controls.

Maintain records for at least the period they remain relevant—typically until the next assessment or until significant changes occur.

Common Compliance Mistakes to Avoid

Victorian employers often make these mistakes when managing workplace noise:

Relying solely on hearing protection: Personal hearing protectors are the lowest level of control in the hierarchy. Regulations require employers to implement higher-level controls where reasonably practicable before relying on PPE.

Using uncalibrated equipment: Sound level meters and dosimeters must be calibrated to provide accurate results. Using uncalibrated or poorly maintained equipment undermines assessment validity.

Ignoring peak noise: Many employers focus on average noise levels and forget about peak noise events. Both standards must be assessed—peak noise can cause immediate permanent damage.

Inadequate audiometric testing: Employers must provide audiometric testing for workers exposed above the exposure standard. Testing should be provided within three months of commencing work and at regular intervals thereafter.

Failing to review: Initial assessments become outdated as workplaces change. Regular review ensures your noise management program remains current.

Getting Support from Occhygiene

Occhygiene helps Victorian employers meet their noise assessment obligations through:

Comprehensive workplace assessments: Our occupational hygienists conduct thorough noise assessments using calibrated equipment and standard methodologies.

Clear, actionable reporting: We provide detailed reports with practical recommendations tailored to your workplace.

Ongoing support: We help you develop noise management programs, implement controls, and maintain compliance over time.

Training: We deliver noise awareness training for workers and supervisors.

With experience across manufacturing, construction, mining, healthcare, and many other industries, our team understands the specific challenges of Victorian workplaces.

Conclusion

Meeting workplace noise assessment requirements isn’t just about avoiding penalties—it’s about protecting your workers from preventable hearing damage. Victoria’s regulations set clear expectations for when and how assessments should be conducted.

By understanding your obligations, conducting regular assessments, and implementing effective controls, you can create a safer workplace and demonstrate your commitment to worker health. For complex workplaces or where specialist expertise is needed, partnering with a professional occupational hygienist ensures your noise management program meets regulatory requirements and effectively protects worker hearing.