Free E-Learning Courses Canadian Centre for Occupational Health and Safety (CCOHS). Thank you for your interest in workplace safety and the courses sponsored by the Department of Labour and Advanced Education – Occupational Health and Safety Division. Courses are now available through the CCOHS site. Residents of Nova Scotia are able to take 3 courses per year. The courses do not need to be taken all at once but may be done throughout the year. To register please go to CCOHS Nova Scotia OHS Training.