Workplace Hearing Health & Audiometry Testing in New Zealand

In New Zealand, it is estimated that 1 in 6 adults live with some form of hearing loss. This condition costs the health sector an estimated $131.8 million. Hearing loss profoundly affects the well-being of those who experience it. Imagine not hearing the birds sing or being unable to engage in conversations with friends and family. Such experiences can lead to devastating social isolation, stress, and even depression for individuals with hearing loss.

Conducting workplace hearing tests is crucial for ensuring employee safety. Hearing loss is preventable with proper workplace hearing protection and audiometry testing. Audiometry testing helps identify individuals at risk for noise-induced hearing loss, allowing for early intervention. Workplace hearing tests are essential for maintaining employee safety and well-being.

Understanding Audiometry

Audiometry is the science of measuring hearing. The history of audiometry dates back to the early 1900s. In 1906, Dr. Heinrich von Torklus published the first paper on using audiometry to detect hearing loss in workers exposed to noise. This paper described how to measure loudness discomfort levels and estimate safe exposure levels. The first clinical audiometer was developed in 1910 by Dr. Harvey Fletcher. This device could measure a person’s hearing threshold level, which is the minimum amount of sound that a person can hear.

How Does Hearing Work?

Anatomy of the Ear

The outer ear and middle ear capture and amplify sounds, transmitting them to the inner ear. The inner ear contains delicate hair cells that respond to sound waves. As these hair cells move, they trigger chemical signals that travel to the brain. Different parts of the inner ear are responsible for hearing different frequencies or pitches. Damage to any part of the ear, especially the tiny hair cells and inner ear, can lead to Noise-Induced Hearing Loss (NIHL). NIHL is permanent damage caused by exposure to excessive loud noise. This condition can develop suddenly or over time, but it is preventable.

How Much Noise is Too Much?

The level at which sound becomes harmful depends on both the loudness of the sound and the duration of exposure. The louder the sound, the shorter the time needed to cause hearing damage. For instance, exposure to a loud rock concert for just 15 minutes could harm your hearing.

Sound levels at or above 85 decibels (dB) for extended periods can cause NIHL. Noise levels are measured in dB. To put this into perspective, noise levels at a busy street corner measure about 85 dB. The noise level inside a car on the highway is around 70 dB, while a quiet office measures about 50 dB.

Types of Workplace Hearing Tests

Yes, there are various types of workplace hearing tests. However, the primary type conducted is pure-tone audiometry testing. This test measures a person’s ability to hear pure tones at different frequencies. The results are graphed on an audiogram. If an individual's test indicates damage or hearing loss, we refer them to a specialist or their GP for further investigation.

Legal Requirements for Hearing Tests in New Zealand

The Health and Safety at Work Act 2015 requires employers (PCBUs) to take all reasonably practicable steps to ensure the health and safety of workers. This includes protecting workers from risks to their hearing health. WorkSafe provides an in-depth download to help understand how to identify hazards in your workplace.

Many workplaces may require hearing tests. For instance, construction sites or factories with loud noise exposure need regular assessments. Hearing tests are also beneficial for workers who have been exposed to noise over extended periods, such as musicians or office workers who frequently use headsets.

Integrating Hearing Tests with Other Services

Yes, a workplace hearing test can be conducted as a standalone appointment or alongside our Spirometry testing service. It can also be part of our other services, such as our Safety Check. The Healthbox team consists of highly qualified professionals who conduct audiometry testing and provide comprehensive organizational reports of the results. We recommend that all adults have their hearing checked at least once a year.

How Does a Healthbox Hearing Test Work?

Healthbox workplace audiometry tests are performed by our highly trained Clinical Exercise Physiologists in a quiet room at your workplace during a 15-minute appointment. A short questionnaire is also completed. Results are compared to normative New Zealand data, and any abnormal results are referred to audiologists or General Practitioners for follow-up.

Contact Healthbox to arrange workplace audiometry appointments for your team!

The Importance of Workplace Hearing Tests

Workplace hearing tests are not just a legal requirement; they are essential for fostering a safe and healthy work environment. By prioritizing hearing health, we can enhance employee well-being and productivity.

Imagine a workplace where everyone can communicate effectively, free from the barriers of hearing loss. This is achievable through regular hearing assessments and appropriate interventions.

Investing in hearing health today can prevent costly issues tomorrow. Let's work together to create a sound environment for all employees.

In conclusion, hearing loss is a significant concern that affects many individuals. By understanding the importance of workplace hearing tests and taking proactive measures, we can ensure a healthier future for everyone.