In Quebec, the monitoring of the population’s health, including workers’ health, is governed by the Public Health Act. This law provides for the implementation of surveillance plans that define the parameters of the factors to be monitored. The Institut national de santé publique du Québec plays a key role in implementing these surveillance plans. It works closely with other relevant organizations, primarily the Ministère de la Santé et des Services sociaux and the regional public health directorates. In the field of occupational health, the content of regional and national surveillance plans is divided into two sections: general and specific surveillance. General surveillance addresses broad themes such as mortality, morbidity, non-fatal injuries, and workplace exposures. Specific surveillance targets specific health issues in the workplace more precisely. These include musculoskeletal disorders, respiratory diseases, poisonings, infectious diseases, cancers, hearing loss, adverse pregnancy outcomes, heatstroke, and stress. The sources of information required for surveillance are diverse and include, among others, data on compensated work-related injuries, surveys on workers’ exposure and health status, as well as government health and social services databases. Mechanisms for disseminating information to the public, workplaces, and stakeholders and decision-makers are also provided. (R.A.)