Mental Health at Work: An Evidence-Based Guide for Canadian Organizations

Updated13 August 2026

What mental health at work means

Mental health at work refers to the mental well-being of workers in relation to their work environment, work organization, and work conditions. It includes both the absence of mental illness and the presence of positive mental health, such as engagement, meaning, and a sense of accomplishment. Mental health at work should not be reduced to self-care, resilience training, or wellness activities alone. The strongest evidence points to work conditions themselves, workload, autonomy, support, leadership, and fairness, as central determinants of employee mental health, with individual supports playing a complementary rather than a primary role.^[1]^[3]

1. Mental health at work versus psychological health and safety

Psychological health and safety describes a workplace that promotes workers’ psychological well-being and actively works to prevent harm to worker psychological health, including in negligent, reckless, or intentional ways. Psychological safety, a team-level belief that it is safe for interpersonal risk-taking, is related but distinct, since it focuses on team climate rather than organizational systems and psychosocial hazards. Psychosocial risk factors, aspects of work design, organization, and management that can affect workers’ psychological health, include workload, control, support, civility, and leadership, and form the practical bridge between the broad concept of mental health at work and the specific hazards an employer can identify and control.^[4]^[3]

2. The state of worker mental health in Canada

One in five Canadians will experience a mental health problem or illness in any given year, and mental health conditions are the leading cause of disability in Canada. An estimated one million employed Canadians worked during a depressive episode in the past year, while another 310,000 were unable to work because of depression; about 550,000 employed Canadians worked with an anxiety episode, and nearly 170,000 were unable to work because of anxiety. Mental health challenges cost the Canadian economy an estimated $180 billion annually, with most costs borne by employers and linked to presenteeism, which accounts for close to 80% of productivity losses related to mental health challenges. Private-sector full-time employees lost roughly 9.3 total days per worker to all absences in 2024, compared with about 15.7 days for public-sector employees, and Canadian employees miss an average of 2.4 days of work per year specifically due to stress or mental health reasons.^[1]^[8]^[9]

3. How work affects mental health

High job demands, low autonomy, low support, and effort-reward imbalance predict depression, anxiety, adjustment disorder, and burnout. A Canadian longitudinal study found that increased psychological demands were associated with more than double the odds of developing depression over two years. Between 17% and 35% of depressive disorders in Europe might be prevented by eliminating adverse psychosocial working conditions, according to a Lancet analysis. Low job control, low social support, and high workload are associated with increased emotional exhaustion and burnout symptoms, while support from co-workers and managers has the strongest impact on employee mental health, alongside paid time off, personal days, and flexible schedules. Civility and respect are linked to greater job satisfaction, fairness perceptions, morale, teamwork, and engagement, while incivility leads to conflict and emotional exhaustion.^[11]^[13]^[14]^[15]^[16]

4. How mental health affects work

Mental health conditions influence attendance, engagement, and safety at work, but the relationship runs in both directions: work conditions can create or worsen distress, and distress can in turn affect a person’s ability to attend and perform. Presenteeism, working while unwell, accounts for a larger share of mental-health-related productivity loss than absenteeism, making it essential for employers to look beyond attendance records alone when assessing the impact of mental health on their workforce. Disability, including mental illness, is the most common ground in Canadian human rights complaints, representing 54% of complaints in 2020, underscoring the connection between workplace mental health and legal accommodation obligations.^[9]^[23]

5. Psychosocial risk factors with the strongest evidence

The National Standard of Canada for Psychological Health and Safety in the Workplace organizes 13 psychosocial factors, including workload management, civility and respect, clear leadership and expectations, engagement, growth and development, involvement and influence, organizational culture, psychological protection, social support, recognition and reward, and balance. These factors are supported by CCOHS guidance and reflected in free Canadian assessment tools such as Guarding Minds at Work, which is aligned with the Standard and widely used by employers to identify which factors need attention in their own workplace.^[3]^[4]^[5]

6. Organizational versus individual interventions

Organizational-level interventions, such as work redesign, leadership training, and policy changes, can reduce burnout and improve psychosocial work environments, though evidence quality varies by sector, with healthcare showing the strongest results. Multi-level interventions that combine organizational and individual strategies show the most robust evidence for burnout reduction, and organizationally focused interventions tend to have longer-lasting positive effects than individually focused ones. Individual-level interventions, such as cognitive behavioural therapy, mindfulness, and digital eHealth tools, show small but significant short-term improvements in anxiety, depression, and stress, though effects often diminish over 12 to 24 months without organizational reinforcement.^[17]^[18]^[19]

7. Training for managers and workers

Manager training improves managers’ mental health knowledge, reduces stigma, and improves self-reported supportive behaviours, though effects on employee psychological symptoms remain preliminary because few studies measure employee-level outcomes directly. Workplace anti-stigma interventions significantly reduce stigmatizing attitudes in the large majority of studies reviewed, with both online and face-to-face formats showing effectiveness. Training should be understood as one component of a broader strategy rather than a standalone fix: it can improve awareness, knowledge, and supportive behaviour, but it cannot substitute for addressing excessive workload, low control, or a stigmatizing culture.^[20]^[21]

8. Disclosure, stigma, and accommodation

Employees are not generally obligated to disclose a mental health condition unless they are seeking accommodation or safety is at risk, though employers have a duty to inquire when they perceive a disability may be affecting work. Employers are generally entitled to functional information about restrictions and prognosis but not to a diagnosis, and accommodation must be provided up to the point of undue hardship. Because disability is the most common ground for Canadian human rights complaints, organizations benefit from having a clear, well-communicated accommodation process rather than relying on ad hoc responses to individual disclosures.^[22]^[23]

9. Measuring and evaluating workplace mental health

A credible measurement approach tracks absence, turnover, engagement, and psychological-health-and-safety survey indicators together, rather than relying on any single metric. Absence and turnover data offer objective signals, but they lag behind emerging problems, so pairing them with periodic psychosocial-factor surveys, such as those aligned with the National Standard, allows organizations to catch risk earlier. Evaluation should also track implementation quality, since the same training or policy change can produce very different results depending on whether it is genuinely resourced and reinforced by leadership.^[3]^[4]

10. Getting started: priorities for Canadian employers

Organizations early in this work generally see the fastest results from addressing excessive workload and unclear roles, since these are among the most consistently supported predictors of distress and burnout. From there, integrating psychosocial risk assessment into existing OHS processes, training managers on supportive conversations and accommodation, and building a clear, confidential disclosure and accommodation pathway create the foundation for a comprehensive strategy. Quick wins, such as a manager training session or a pulse survey, are useful starting points, but they should be framed publicly as the beginning of an ongoing system rather than a completed initiative.^[3]^[20]

Mental Health at Work: 3 Things HR Can Do This Week

1. Separate your absence data from your presenteeism blind spot

HR can add one presenteeism question to an existing survey, such as how often employees worked while feeling too unwell to perform at their normal level in the past month, since presenteeism drives a larger share of mental-health-related productivity loss than absence alone.^[9]

Outcome: HR gains visibility into a cost that absence records alone will never show.

2. Map your accommodation process against the disclosure reality

HR can review whether the current accommodation process assumes employees will disclose a diagnosis, and revise intake language to request only functional information, restrictions, and needs, consistent with what employers are actually entitled to ask.^[22]

Outcome: The accommodation process becomes easier and safer for employees to use, and less likely to request information the organization does not need.

3. Pick one psychosocial factor and assign it an owner

HR can select one of the 13 psychosocial factors, such as workload management or recognition and reward, where team feedback suggests the biggest gap, and assign a named owner and a 90-day action instead of adding it to a general wellness list.^[3]^[4]

Outcome: One factor gets real ownership and a deadline, which is more likely to produce visible change than a broad, unowned wellness initiative.

Featured Resource: Mental Health Continuum Tool