Workplace Stress: Causes, Effects, Prevention and Support

Updated13 August 2026

What workplace stress is

The Canadian Centre for Occupational Health and Safety defines workplace stress as the combination of harmful physical and emotional responses that can happen when there is a conflict between job demands on the worker and the amount of control a worker has over meeting those demands. Stress is a reaction to a situation, not the situation itself, occurring when people perceive demands as exceeding their resources to cope. Short-term stress, sometimes called eustress, can be motivating and help people meet deadlines or performance targets. Chronic workplace stress is different: it involves sustained activation of the body’s stress response without adequate recovery, leading to physical and mental health deterioration, because the body’s stress-response system does not get to turn off.^[1]

1. What causes workplace stress

Canadian and international evidence identifies a consistent set of workplace stressors. Heavy workload and time pressure are the most frequently reported stressor across Canadian surveys. Low decision authority and limited input into how work is done, central to the job strain model, are independently associated with mental and physical health outcomes. Role ambiguity and conflicting expectations are associated with psychological distress and burnout, while low co-worker or supervisor support and interpersonal conflict are linked to distress, work injuries, and even migraines. Bullying, harassment, and violence are significant psychosocial hazards in their own right, and job insecurity combined with poorly managed organizational change elevates stress by increasing uncertainty, workload, and reduced perceived control. Poor leadership, marked by lack of recognition, inconsistent communication, or unfair treatment, and difficulty balancing work and personal life round out the major categories.^[2]^[6]

2. How workplace stress affects health

Chronic workplace stress is strongly associated with mental health outcomes. High job strain, the combination of high demands and low control, approximately doubles the risk of incident depression, with a pooled effect estimate near 2.0 in meta-analytic research, and high work demands are similarly associated with incident anxiety disorders. Burnout is the most frequently observed outcome among workers exposed to high workload, role ambiguity, and resource inadequacy. Workplace stress is also associated with multiple physical health conditions: moderate evidence links job strain and effort-reward imbalance to increased risk of coronary heart disease, hypertension, and stroke, and psychosocial stress at work is connected to metabolic dysregulation and increased risk of type 2 diabetes. Job strain is additionally associated with musculoskeletal disorders and work injuries, and chronic stress is linked to weakened immune function and slower recovery from illness.^[7]^[8]^[9]

3. Workplace stress versus burnout

Workplace stress and burnout are related but distinct. Workplace stress is a response to excessive job demands relative to control and available resources, and it can be measured with perceived-stress scales or job-strain models. Burnout is a syndrome of emotional exhaustion, cynicism or depersonalization, and reduced personal accomplishment resulting from prolonged exposure to unmanaged workplace stress, particularly high workload combined with low reward, and it is typically measured with tools such as the Maslach Burnout Inventory or the Copenhagen Burnout Inventory. Burnout is best understood as a severe, chronic manifestation of unmitigated workplace stress, particularly common in helping professions where emotional demands and resource constraints compound over time.^[9]

4. Canadian statistics and sector differences

In April 2023, 21.2% of employed Canadians, approximately 4.1 million people, reported high or very high levels of work-related stress. Heavy workload was identified as a cause by 23.7% of employed people, and difficulty balancing work and personal life by 15.7%. Women were more likely than men to report high or very high work-related stress, at 22.7% compared with 19.7%. The health care and social assistance sector had the highest prevalence at 27.3%, with workers citing heavy workload, at 32.3%, and emotional load, at 21.4%, as primary stressors. Core-aged workers between 25 and 54 experienced higher stress, particularly those in management roles, at 37.3%, and occupations requiring a bachelor’s degree or higher, at 29.5%. In the 2022 Survey of Employees under Federal Jurisdiction, 28.5% of employees reported being always or often stressed by their volume of work, the most commonly cited source of workplace stress in that population.^[2]^[3]

5. Absenteeism and presenteeism

7.5% of employed Canadians took time off in the 12 months before April 2023 because of stress or mental health reasons. Systematic reviews indicate that individual-level stress-management interventions do not significantly reduce absenteeism, while organizational physical activity programs show some reduction, and participatory stress-reduction interventions, where management and employees jointly redesign work, have significantly reduced absenteeism in some reviews compared with control groups. Presenteeism, working while unwell, is correlated with elevated job demands and felt stress, job insecurity and strict absence policies that discourage taking leave, lack of job and personal resources such as low support, and negative relational experiences such as perceived discrimination. A systematic review and meta-analysis found that job stress, mental health problems, job insecurity, exhaustion, and job demands showed moderate positive correlations with productivity loss during the COVID-19 pandemic specifically.^[2]^[10]^[19]

6. Measuring workplace stress

Several validated tools support Canadian employers in assessing workplace stress and psychosocial hazards. StressAssess, developed by the Occupational Health Clinics for Ontario Workers and CCOHS, is a free, evidence-based online survey tool based on the Copenhagen Psychosocial Questionnaire and adapted for Canadian workplaces, allowing organizations to compare their results against a validated Canadian dataset. Guarding Minds at Work offers surveys and tools aligned with the 13 psychosocial factors in the CSA Z1003 standard and ISO 45003. The Public Services Health and Safety Association’s Radius tool assesses risk of psychological harm related to 18 job-specific psychosocial factors. A recommended measurement approach reviews internal data such as incident reports, absenteeism records, and turnover rates, audits organizational structures for role clarity and decision-making processes, gathers anonymous survey feedback using a validated tool, prioritizes interventions that address the source of hazards, and re-assesses using the same tool after interventions to measure change.^[14]^[15]^[16]

7. What works: evidence on interventions

Individual-level interventions such as cognitive behavioural therapy and stress-management training produce meaningful effects on individual mental health outcomes, including anxiety, depression, and stress, but they do not address organizational sources of stress and have limited or no impact on absenteeism. Resilience training can improve personal resilience and mental health outcomes with small-to-large effect sizes in some reviews, though a 2024 systematic review protocol described the certainty of this evidence as very low, and resilience training is less effective for workers with prior trauma exposure. Manager mental health training significantly improves managers’ knowledge, non-stigmatizing attitudes, and supportive behaviours, and a cluster randomized controlled trial in a fire and rescue service found that a four-hour manager training programme reduced work-related sick leave, with a return on investment of £9.98 per pound spent, though no significant pooled effect on employee psychological symptoms has been found due to limited studies evaluating employee-level outcomes.^[10]^[11]^[12]^[18]

Job redesign and workload interventions show mixed results in the literature: older meta-analyses found non-significant effects for organizational interventions overall, but more recent meta-analyses found that organization-directed interventions, including workload reductions, leadership improvements, and mindfulness, resulted in meaningfully reduced burnout. Job-design interventions rarely achieve sustained workload reduction in practice despite theoretical promise. Organizational-level psychosocial interventions show limited evidence of reducing stress or absenteeism compared with no-intervention controls, though participatory approaches involving joint employee and management action teams appear more promising than top-down changes. CCOHS is explicit on this point: stress management training and counselling services can help individuals, but organizations should not forget to look for the root causes of stress and address them as quickly as possible.^[1]^[13]

8. What employers should do

Canadian guidance recommends a hierarchy of controls approach to workplace stress. Primary prevention addresses psychosocial hazards at their source through job redesign, workload management, clear roles, and improved leadership. Secondary prevention provides manager training, early intervention through employee assistance programs, and self-care tools. Tertiary prevention ensures access to psychological treatment, coordinated disability management, and support for staying at or returning to work. The CSA Z1003 standard and the Mental Health Commission of Canada’s Workplace Standard call on employers to collect information annually on psychosocial hazards, establish decision rules for when action must be taken, and use scientifically valid and reliable assessment instruments rather than informal surveys.^[17]

9. Common misconceptions

Workplace stress is often framed as an individual problem that resilience training will fix, but it is primarily driven by organizational factors such as workload, control, and leadership, and individual interventions help without addressing the root causes. Telling stressed employees to simply manage their time better ignores that heavy workload, low control, and role ambiguity are structural issues that individual time management cannot resolve. Offering an employee assistance program is valuable for tertiary support, but it does not prevent psychosocial hazards; primary prevention requires organizational change. Chronic stress is sometimes treated as simply part of the job in high-pressure industries, but it is a preventable occupational hazard linked to serious health outcomes, and Canadian law and standards require employers to assess and control psychosocial risks. Finally, stress and burnout are often used interchangeably, though burnout is a specific syndrome resulting from chronic, unmanaged workplace stress, characterized by exhaustion, cynicism, and reduced efficacy.^[1]^[9]

Workplace Stress: 3 Things HR Can Do This Week

1. Run a StressAssess survey on one high-stress team

HR can deploy the free StressAssess tool with a team showing signs of strain, such as the health care or client-facing groups that Canadian data identify as higher risk, and compare results against the validated national dataset to see where the team falls.^[14]

Outcome: HR gets a benchmarked, evidence-based read on workload and control issues instead of relying on informal impressions.

2. Separate workload data from performance conversations

HR can ask managers to review team workload and staffing levels as a distinct agenda item from individual performance reviews, so that workload problems are identified as a team or role-design issue rather than folded into an individual employee’s performance narrative.^[6]

Outcome: Workload issues get surfaced and addressed at the source instead of being reframed as individual performance gaps.

3. Pilot a participatory stress-reduction session

HR can convene a short session where a team and its manager jointly identify one source of stress they have influence over, such as scheduling, handoffs, or unclear priorities, and agree on one change to test for four weeks, following the participatory model shown to reduce absenteeism in some reviews.^[10]

Outcome: The team tests a concrete, jointly designed change rather than receiving a generic stress-management tip sheet.

Featured Resource: Mental Health Continuum Tool