In Ontario, most workplaces with 20 or more workers must have a joint health and safety committee (JHSC), made up of at least one worker and one employer member. The committee's primary role is to identify workplace health and safety issues and bring them to the attention of the employer. Under the Occupational Health and Safety Act, at least one worker and one employer on a JHSC must be certified. JHSC members who successfully complete all parts of an approved training program are eligible to be certified by the Chief Prevention Officer.