Managing Workplace Stress: What the Evidence Actually Shows Works

Workplace stress is a leading mental health concern worldwide, and global health authorities have spent the past decade reviewing which interventions actually reduce it. According to the World Health Organization (WHO), 16% of working-age adults had a mental disorder in 2023, and depression and anxiety together cost the global economy an estimated US$1 trillion a year in lost productivity through 12 billion lost working days annually.

Why organizations, not just individuals, matter

The U.S. National Institute for Occupational Safety and Health (NIOSH), part of the CDC, reviewed more than 10,000 studies published between 2007 and 2017 and found only 37 that met its criteria for evaluating workplace stress interventions. Of those, 33 tested individual-level strategies — mainly mindfulness, cognitive behavioral techniques and coping skills — while only two targeted organizational factors and two combined both approaches.

NIOSH's review concluded that most workplace stress-reduction strategies focus on increasing a worker's tolerance to stress rather than removing the source of that stress within the job or organization. NIOSH states that organizational changes — such as matching workload to a worker's capacity, clarifying roles, giving employees a voice in decisions, and designing predictable schedules — should be given top priority, because individual coping skills alone do not address the underlying causes of stress and can lose effectiveness over time.

What WHO recommends

The WHO's 2022 guidelines on mental health at work, built using the GRADE evidence-grading system, recommend organizational interventions that reduce or remove psychosocial risk factors such as excessive workloads, long or unpredictable hours, low job control, and workplace bullying or harassment. The WHO notes, however, that most of the evidence behind organizational interventions is still rated as very low quality, mainly because such workplace changes are difficult to test with rigorous trials.

WHO also recommends training managers to recognize distress and respond supportively, stating explicitly that this training is not meant to turn managers into mental health care providers. Individual interventions — including psychosocial support and physical activity — are also recommended, but WHO cautions that offering only these can make workers feel personally responsible for problems rooted in how the job itself is organized.

Techniques with supporting evidence

Harvard Health Publishing, reviewing clinical literature on stress management, highlights three approaches with evidence behind them. Relaxation techniques — including meditation, guided imagery, yoga, and deep breathing — are described as triggering the body's "relaxation response," a physiological shift that can lower blood pressure, heart rate, breathing rate and stress hormone levels. Cognitive behavioral therapy (CBT) works by helping people identify unhelpful thought patterns and replace them with more constructive ones. Structured goal-setting across areas such as career, relationships and health is also associated with a greater sense of control and optimism.

• Relaxation response techniques: meditation, guided imagery, yoga, deep breathing
• Physical activity: recommended by WHO as a supportive individual measure
• Cognitive behavioral therapy: reframing unhelpful thought patterns
• Organizational change: workload matching, role clarity, schedule predictability
• Manager training: recognizing distress and responding supportively

Taken together, the bodies reviewed here converge on one point: stress-management techniques aimed at individuals can help people cope day to day, but health authorities say they work best as part of a wider effort that also changes the working conditions generating the stress in the first place.