I recently attended an excellent two day class entitled Positive Outlook. The instructor was Jordan Lewis and it was presented through CWGHR - Canadian Working Group on HIV and Rehabilitation. They have some excellent resources on mental health in the workplace.
mental health commission of canada has initiatives like peer project which could help you give an insight of tackling such issues at workplace.Please visit their website.
see this site:
and this site:
The Workplace Strategies for Mental Health website is also useful. Check out http://www.gwlcentreformentalhealth.com/
If you are in Alberta, have a look at http://www.viablecalgary.ca/
A really good reference is on the CMHA's website. Employment and Mental Illness and the link is :