Occupational Hygiene Services & Exposure Assessment

Identifying, assessing, and controlling workplace health hazards.

Occupational hygiene focuses on protecting worker health by identifying and controlling workplace exposure risks.

Occupational Hygiene Solutions Ltd provides workplace exposure monitoring and occupational hygiene consulting services across New Zealand.

Simplifying Workplace Health Hazards

We help you identify and manage the scientific factors that impact your workers' health and safety across New Zealand.

Workplace Exposure

We identify exactly what substances or agents workers are exposed to, such as dusts, chemicals, or noise.

Exposure Levels

Our monitoring quantifies the volume and duration of exposure to provide a clear picture of the risk level.

Health Impacts

We evaluate whether the exposure poses a harmful risk to worker health based on current standards.

Control Measures

We recommend practical solutions to reduce or eliminate exposure using the hierarchy of controls.

Common Exposure Risks

Dusts and fibres

Respirable crystalline silica

Welding fumes and metal oxides

Chemicals, solvents and VOCs

Noise and impulse noise

Vibration

Thermal stress (heat and cold)

Indoor air quality

Biological contaminants/ aerosols and fungal

Fumes, vapour and mists

Combustion products (diesel particulate)

Our Deliverables

Exposure monitoring reports

SEG-based exposure assessments

Control effectiveness reviews

Risk prioritisation matrices

Compliance gap analysis

Engineering control recommendations

Our Specialties

Noise Monitoring

Noise exposure is one of the most common workplace health risks and can lead to hearing loss, tinnitus, stress, and other health effects if uncontrolled. We assess workplace noise levels to identify risks, evaluate exposure, and ensure compliance with relevant standards.

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Dust Monitoring

We assess inhalable and respirable dust exposures, including silica, wood dust and process dusts, to identify health risks in workplace environments. Our assessments help evaluate exposure levels and verify control effectiveness.

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Chemical & Hazardous Substances Monitoring

We evaluate workplace exposure to hazardous substances including solvents, fumes, gases, vapours, and hydrocarbons using recognised occupational hygiene methods and monitoring equipment.

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Mould & Indoor Air Quality

We assess indoor air quality to identify contaminants such as CO₂, VOCs, dust, and airborne particulates, as well as ventilation performance to improve workplace conditions.

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Vibration Monitoring

We measure hand-arm (HAV) and whole-body vibration (WBV) exposure from tools, vehicles, and machinery to identify risks and prevent long-term health effects like HAVS.

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Local Exhaust Ventilation (LEV)

We assess and test LEV systems to ensure effective capture of airborne contaminants. Our evaluations verify performance, identify deficiencies, and support air quality standards.

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Biological Exposure Monitoring (Urine & Blood)

We partner with qualified and licensed health professionals to provide biological exposure monitoring to assess workplace exposure to hazardous substances through the analysis of biological samples such as urine and blood.

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Lighting

We assess workplace lighting to identify poor illumination and visual strain that contributes to ocular fatigue and eye strain, ocular health, and eye-related health problems.

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Thermal Stress

We evaluate heat and cold stress to ensure compliance with thermal exposure guidelines. Assessments identify risks from extreme temperatures to protect worker health and safety.

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Health Risk Assessments

Structured evaluation of workplace health risks to prioritise controls and support evidence-based decision making for improved occupational hygiene outcomes.

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PPE Selection and Program Development

Guidance on selecting appropriate personal protective equipment and developing effective PPE programs tailored to specific workplace hazards and regulatory requirements.

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Gas Monitoring Solutions and Program Development

Design and implementation of custom gas detection systems and monitoring programs for toxic, flammable, and asphyxiant gases to ensure safe operations.

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Work-related Health Regulatory Compliance Review

Review of health systems and exposure risks to ensure alignment with relevant legislation, standards, and best practice guidelines for full compliance.

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