For more information on employee assistance and assessment services, look to the resource material through the Canadian Centre on Substance Use and Addiction: https://www.google.com/search?client=firefox-b-d&q=canadian+centre+on+substance+use+and+addiction
The Centre also provides information and research on marijuana use in a series of reports dealing with impacts on health and driving skills among other things. https://www.ccsa.ca/cannabis
Information and the results of the Canadian Tobacco, Alcohol and Drugs Survey (2017) are found at:
Statistics Canada has been regularly posting quarterly surveys specific to cannabis which can be found on their web site.
The 2018 Health Canada Canadian Cannabis Survey can be viewed at: https://www.canada.ca/en/services/health/publications/drugs-health-products/canadian-cannabis-survey-2018-summary.html
For information about on-line supervisor training programs, contact Corridor Interactive through their web page at: http://corridorinteractive.com
Most legal decisions are posted at: http://www.canlii.org/en/index.html
Information on human rights legislation and related issues can be accessed through the Federal Human Rights Commission web site: http://www.chrc-ccdp.ca/eng and through the various provincial commission sites. (see Human Rights resource on this web site).
For general information about alcohol and drug use and impacts:
Health Canada information about alcohol and other drugs: http://recherche-search.gc.ca/rGs/s_r?st=s&s5bm3ts21rch=x&num=10&st1rt=0&langs=eng&cdn=health&q=alcohol+and+drugs
The Ontario Centre for Addiction and Mental Health in Ontario has a wide range of information resources best sorted through their alphabetical index at: http://www.camh.net/Publications/CAMH_Publications/alphabetical_pubsindex.html
The U.S. Department of Transportation Office of Drug and Alcohol Policy and Compliance: http://www.dot.gov/odapc/index.html