An occupational illness is a health condition or disorder that is caused by the work environment or related activities.
They can be disruptive, disabling and sometimes fatal.

From cancer to heart disease to respiratory issues, illness of many types can be related to our work.

It is important to know the hazards of your job, and take whatever precautions are required to work safely and stay healthy on the job.


Work-related cancer is any cancer that results from exposure to cancer-causing agents* at work.

*also known as carcinogens.

Examples of work-related cancer include:

lung   •   bladder    •   kidney   •   leukemia  •  stomach   •  liver   •   mesothelioma   •   melanoma
as well as many others

Most work-related cancers do not appear until years after exposure to the carcinogen.
Even if you were exposed many years ago, your cancer may still be related to your work.

Learn more about work-related cancers using the following resources:

Note:  Use the dots above to view all related resources.

…or visit our Work-related Cancer page.


Cardiovascular disease (CVD) is a general term for conditions affecting the heart or blood vessels.
It can be related to workplace stress and exposures as well as poor lifestyle choices such as smoking and drinking.

Use the following resources to learn more about the causes, symptoms and prevention of these work-related cardiovascular illnesses:

Note:  Use the dots above to view all related resources.


Respiratory illnesses potentially related to your work include:

Pneumoconiosis*   •   Occupational Asthma  •  Chronic Obstructive Pulmonary Disease (COPD)
•   Lung Cancer   •  Mesothelioma  •
as well as others

*Asbestosis, Silicosis, Byssinosis

Use the links above to learn more about specific illnesses or the following resources to learn more about the causes, symptoms and prevention of respiratory illnesses:

Respiratory Hazards

A webinar presented in 2019 by Kimberly O’Connell, CIH, ROH, CRSP,  Kevin Hedges, PhD, COH, CIH and Todd Irick M.Sc, CIH

Selecting Effective Respiratory Protective Equipment for SARS-COVID-19

A 2020 presentation by Simon J. Smith providing an overview of respiratory protection; respiratory types relevant in healthcare; filtration, fit and function; standards for respiratory protection as well as selection and guidance.

Preventing Occupational Disease through the Designated Substance Codes for Exposure Measurement, Respiratory Protection and Medical Surveillance

A submission regarding the Ontario Ministry of Labour’s Consultation on Proposed Changes to Ontario Regulation 490/09 – Designated Substances and the Requirements for Medical Surveillance, Respiratory Protection and Measuring


Noise-induced hearing loss (NIHL) is the depletion of one’s hearing as a result of prolonged exposure to high levels of noise.

Learn more about NIHL using the links to the featured resources below:

Noise-Induced Hearing Loss (NIHL) Audiogram Calculator

Updated August 2021

Designed to assess values based on the worker’s audiogram to clarify if their NIHL meets the minimum requirement for establishing a NIHL claim with the Ontario Workplace Safety and Insurance Board (WSIB).

Noise – Its Effects and Methods to Reduce Exposure

A presentation
Presented by James Miuccio, MSc, CIH
Occupational Hygienist

Doing Something About
Workplace Noise

Thumbnail of an infographic title Doing Something About Workplace Noise

An infographic presenting the types and effects of noise, control measures and goals, as well as the benefits of noise control.


This section is currently under development.
We will be adding content and resources here soon.

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