Highlights from a 30-page report from 2008 written for a business audience that digests key findings and action strategies from over 80 research studies. PROBLEM: Many studies show that mental health and alcohol/drug conditions are common in Canadian society and yet most cases are under-diagnosed and under-treated. Research also shows that workers with untreated mental health conditions are costly to employers. THE SOLUTION: Other research documents that available treatments for mental health are both clinically- and cost-effective. There are proven strategies that employers can use to encourage the proper identification, treatment and prevention of mental health conditions. These strategies occur at three levels: the employee, the workplace, and the organization. THE CHALLENGE: Workplace mental health issues are important to business success and they can be effectively addressed. More employers need to adopt existing strategies and services.