Which workers are at risk of occupational asthma due to exposure to plicatic acid?

Workers who are at risk of occupational asthma due to exposure to plicatic acid are primarily woodworkers. Plicatic acid is a chemical compound found in Western red cedar and other types of wood. Exposure to wood dust, particularly from cedar, can lead to respiratory issues, including asthma, as well as other allergic reactions.

Woodworking involves processes that release wood dust into the environment. When inhaled, this dust can contain plicatic acid, which is known as a sensitizing agent. In sensitive individuals, exposure to plicatic acid can provoke an immune response leading to bronchial inflammation and asthma symptoms.

The other groups of workers mentioned, while they may face exposure to various allergens or irritants in their respective fields, do not typically encounter plicatic acid at levels that would pose a risk for occupational asthma in the same way that woodworkers do. Understanding the specific risks associated with particular occupational exposures is crucial for implementing effective workplace safety measures and protecting workers' health.