The 9-to-5 (or more accurately, the 8-to-6) is making us sick. In 2025, the workplace has become a primary source of chronic stress for millions. While some pressure can be motivating, the line between healthy challenge and harmful anxiety has been crossed. We are in the midst of a burnout epidemic, with the Health and Safety Executive (HSE) reporting that stress, depression or anxiety accounted for 17.1 million working days lost in Great Britain in 2023/24.
The financial toll is staggering — costing the UK economy an estimated £28 billion annually in lost productivity . But for workers, the cost is personal: it is their health, their families, and their futures at stake.
Too often, stress is treated as a personal failing — a lack of resilience or poor time management. In reality, workplace stress is a systemic issue driven by employer decisions. To protect worker rights and well-being, we must identify the root causes. Here are the top 10 causes of stress at work in today's high-pressure economy.
1. Unmanageable Workloads and Unrealistic Deadlines
The number one culprit is simple: there is too much work and not enough time. When employees are constantly under the gun to meet tight deadlines with excessive workloads, it leads to anxiety and exhaustion. The HSE confirms that workload, particularly tight deadlines and too much pressure or responsibility, remains the single biggest contributor to work-related stress, cited by a majority of those suffering from the condition . This isn't just about being busy; it's about being set up to fail. High stress doesn't just stay at work — it spills over into home life, eroding personal time and relationships.
2. Toxic Workplace Culture and Behaviour
You can love your job description but hate your job if the culture is rotten. A toxic environment — characterised by negativity, poor communication, lack of trust, and disrespect — is a massive stressor. Research from Acas and the CIPD consistently highlights that poor workplace relationships and negative behaviours are among the top triggers for stress. Bullying, incivility, and cliques destroy morale and create a climate of fear. This isn't just about "personality clashes"; it's a systemic failure to create a psychologically safe environment.
3. Poor Management and Lack of Support
The old adage holds true: people don't quit jobs; they quit managers. Poor managers are a primary cause of stress. Bad management creates confusion, micromanages tasks, and fails to provide support or guidance. Employees need to feel their manager has their back; without that, they feel stranded, unsure if they are meeting expectations, and without an advocate in the company. The CIPD's annual Health and Well-being at Work report consistently finds that poor management styles and a lack of managerial support are major drivers of stress, as managers are often the first line of defence in identifying and mitigating pressure on their teams.
4. Job Insecurity and Redundancy Fears
In an era of economic uncertainty, restructuring, and constant talk of "rightsizing," the fear of losing one's livelihood is a constant, gnawing source of stress. The threat of redundancy creates a culture of fear that destroys loyalty and productivity. The uncertainty of not knowing if you will have a job next month — and the associated financial anxiety — is a profound psychological burden that the HSE identifies as a key stressor related to organisational change and lack of job security.
5. Lack of Control and Autonomy
Feeling like a cog in a machine with no say in how, when, or where you do your work is incredibly demoralising. A lack of control over work tasks and perceptions of micromanagement contribute directly to stress. This is one of the six key management standards outlined by the HSE for tackling stress: employees need a say in how they do their work. When workers aren't consulted on important issues and are expected to adhere to rigid policies without input, they feel disrespected and trapped. This loss of autonomy erodes professional identity and personal dignity.
6. Workplace Bullying and Harassment
This is one of the most distressing causes of stress. Bullying, whether verbal, emotional, or physical, creates a hostile environment where workers cannot function. Harassment can lead to severe anxiety, depression, and even PTSD. While criticism can be constructive, it is often delivered in ways that belittle rather than build up. Every worker has the right to a workplace free from abuse under the Equality Act 2010, yet for many, this right is routinely violated. Acas guidance is clear that bullying and harassment are major causes of work-related stress, and employers have a duty of care to prevent them.
7. Insufficient Pay and the Cost-of-Living Crisis
While purpose matters, people work to live. When wages fail to keep up with the cost of living, stress inevitably follows. The ongoing cost-of-living crisis has meant that for millions of UK workers, financial anxiety is now a constant companion. This is compounded by the fact that many feel trapped in unfulfilling or high-pressure jobs simply because they need the paycheck to survive. The anxiety of mounting bills and the inability to save doesn't stay at home — it permeates the workday, causing distraction, fatigue, and presenteeism.
8. Lack of Growth and Advancement Opportunities
Humans have an innate need to learn and grow. When workers feel stuck in a dead-end job with no chance for advancement or skill development, it leads to feelings of stagnation and despair. The CIPD highlights that a lack of career development and opportunities to utilise skills contributes significantly to poor well-being. This lack of progression signals that the company does not value its employees or invest in their future, making them feel disposable and unmotivated.
9. Poor Communication and Role Uncertainty
Confusion kills confidence. When communication between colleagues and management is inadequate, it results in misunderstandings and frustration. Role uncertainty — not being clear about job purpose, responsibilities, and expectations — is a major stressor identified by the HSE. Vague instructions, shifting priorities, and a lack of transparency about company direction force employees to work in a fog of anxiety, never knowing if they are doing the right thing or what might be expected of them next.
10. Isolation and Poor Workplace Relationships
Humans are social creatures, even at work. Conflict with co-workers or a lack of social support can make the workplace feel like a lonely and hostile place. The rise of hybrid working, while beneficial in many ways, has also led to increased feelings of isolation for some, blurring the lines between work and home and reducing the informal social support that helps buffer against stress. This is especially acute for the millions of lone workers across the UK. For them, top concerns are psychosocial: fatigue, stress, mental health, and the threat of aggression from the public. When you feel isolated, every challenge feels harder to bear.
Conclusion: A Call for Accountability
These ten causes prove that stress is not simply an individual problem to be solved with mindfulness apps and resilience training. It is a workplace rights issue. With over 17 million working days lost to stress, anxiety, and depression last year alone, the onus falls on employers to act.
Under the Health and Safety at Work etc. Act 1974, employers have a legal duty to ensure the health, safety, and welfare of their employees. This includes assessing the risk of stress-related ill health and taking action to prevent it. The HSE provides clear Management Standards covering demands, control, support, relationships, role, and change — the very factors listed above.
Workers deserve environments that offer psychological safety, manageable workloads, and respect. It is time to stop treating the symptoms of stress and start curing the disease. That means holding organisations accountable for creating the conditions that allow workers not just to survive, but to thrive.
Check out our guide on how to deal with stress at work.
Sources:
- Health and Safety Executive (HSE). (2024). *Work-related stress, anxiety or depression statistics in Great Britain, 2024*. Retrieved from hse.gov.uk/statistics.
- CIPD. (2024). *Health and well-being at work 2024 report*. Chartered Institute of Personnel and Development.
- Acas. (2023). Work-related stress and how to manage it: guidance for employers. Advisory, Conciliation and Arbitration Service.
- Mind. (2023). How to support staff wellbeing at work. Mind charity.
- Chartered Institute of Personnel and Development (CIPD). (2023). Good work index 2023.
- Health and Safety Executive (HSE). (n.d.). Tackling work-related stress using the Management Standards approach. hse.gov.uk.
- Acas. (2024). Bullying and harassment at work: advice for employees.
- Office for National Statistics (ONS). (2024). Cost of living and its impact on workplace wellbeing.
- British Safety Council. (2023). Lone working and mental health: A review of the risks.
- Equality and Human Rights Commission. (n.d.). Harassment at work: legal guidance. equalityhumanrights.com.