Work related asthma is a serious breathing disease that is caused by, or made worse by, something in your workplace. There are two types of work-related asthma.
Type 1: Occupational Asthma
You did not have asthma prior to joining your workplace.
Your asthma is caused by exposures within the workplace.
Your symptoms may require you to change jobs.
Your asthma symptoms may occur within minutes to hours after exposure.
Your asthma Symptoms may improve on your days off.
As symptoms may not appear immediately and may improve with days off, it can be difficult to recognize the connection to your work.
Substances that can potentially cause Occupational Asthma to Develop:
Enzymes (e.g., in detergents or laboratories) and moulds
Proteins from animals, plants, foods, insects and fish
Fish and shellfish such as snow crab in fisheries and fish processing industries (particularly in Atlantic Canada).
Wheat or other flour exposures in bakers
Isocyanates in spray paints, some glues, foundry moulds, polyurethane foam used in foam products or insulation. Common jobs are roofers, spray painters in the automobile industry, insulators, and/or polyurethane workers.
Western Red Cedar dust in the logging industry in British Columbia.
Type 2: Work Exacerbated Asthma
Your pre-existing asthma is made worse by something in the workplace.
Certain areas and tasks within your workplace trigger your asthma.
How you are affected will depend on how well your existing asthma is controlled.
Substances that can potentially cause Work Exacerbated Asthma:
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