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6 Negative Effects of Overtime on Employee Productivity

Explore the negative effects of overtime on employees and why managing these effects is critical for maintaining a productive and healthy workforce.

Sarah Altemus

By Sarah Altemus

An exhausted employee experiencing the effects of overtime on productivity.
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In many workplaces, overtime is seen as a necessary way to meet competing deadlines or manage workload surges. Some organizations view overtime as proof of an employee’s commitment to the company. But the long-term implications of extended working hours are detrimental to individual employees and organizational efficiency. 

Productivity – how much quality work an employee gets done – is not the same as how many hours an employee works. Ironically, working more hours reduces productivity for many reasons. Good mental health and physical well-being are the base of any productive employee. Breaks and rest restore well-being and allow employees to perform their best. 

Employees working long hours cost organizations more than just the overtime pay. Consider the negative effects of overtime on employees and why managing these effects is critical for maintaining a productive and healthy workforce.

The effects of overtime on productivity

1. Decreased efficiency

The intention behind overtime – to increase productivity – often has the opposite effect. Research from Stanford University showed overworking actually leads to decreased total output. Productivity per hour declines after employees work more than 50 hours a week and is even worse after 60 hours. For example, based on calculations, productivity during 60-hour weeks would be less than two-thirds of what it was for a 40-hour week. As productivity declines, individual performance declines. This contributes to lower overall team output and starts to affect project timelines.

2. More errors, accidents and safety risks

Extended hours also contribute to more errors and accidents on the job. One study from the Occupational and Environmental Medicine Journal showed working in jobs with overtime was associated with a 61% higher injury rate. In fact, working 12 hours or more a day meant a 37% increased hazard rate and 60 hours per week meant a 23% increase. An injury on the job obviously stops productivity, but increased errors also cause productivity problems for other team members who have to pick up the slack or spend time fixing mistakes.

3. Higher absenteeism 

Higher rates of overtime lead to higher rates of absenteeism as employees try to address their overwhelm and stress. Employees who call out sick from work can’t produce. Unplanned absences cause problems for team members who have to find ways to complete work when their colleagues are out. This causes a cascading effect, hurting productivity for the entire team and leading to even more overtime.

4. Increased turnover

Higher overtime contributes to employee turnover because overworked employees often start to look for a new job. According to research by McKinsey & Company, unsustainable workloads were a major driver for the Great Resignation that took place after the COVID-19 pandemic shutdowns. Companies that attempt to continue producing the same amount of work with fewer employees inevitably lose even more productivity as employees quit to preserve their well-being.

5. Greater health risks

Working overtime also correlates with health problems, including a higher risk of cardiovascular disease like increased blood pressure, obesity and diabetes. The World Health Organization (WHO) found working long hours is a significant health hazard. Workers who work 55 hours or more a week have a 35% increased risk of stroke and a 17% higher risk of dying from ischemic heart disease. Employees who are sick are more likely to suffer from burnout, call out more often or simply be unable to work, all of which affect productivity.

6. Poor mental health

Chronically high stress levels and burnout from long work hours also affect mental health and emotional well-being. Anxiety and depression often arise from the overwhelming demands of excessive overtime. A report from the National Institutes of Health showed employees who report working 60 hours or more are 1.4 times more likely to have depression and 1.66 times more likely to have poor mental well-being. Many overworked employees increase their alcohol consumption, which also contributes to poor mental health outcomes. Creating a supportive work culture helps prevent mental health issues and keeps productivity up by fostering work-life balance.

Increase productivity without overtime with ActivTrak

Overtime can be a tool for managing workloads and deadlines, but organizations must recognize its negative effects on employee productivity. Leverage ActivTrak’s productivity management software to increase productivity without asking employees to work overtime. The advanced workforce analytics platform gives you insights to balance workloads, enhance well-being and optimize productivity across your organization. Whether you manage a hybrid or remote workforce, our solutions give you the visibility and actionable data to support informed decisions and foster a healthier, more engaged workforce. 
Join the 9,500+ customers who trust ActivTrak to help their teams achieve their full potential. Contact our sales team today to get started.

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Meet the author

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Sarah Altemus
Manager, Productivity Lab
Sarah Altemus is Productivity Lab Manager at ActivTrak, where she contributes to the company’s research and advisory efforts focused on work intelligence in the AI era. Working with one of the world’s largest datasets on how work actually happens, she partners w... Read more
Sarah Altemus is Productivity Lab Manager at ActivTrak, where she contributes to the company’s research and advisory efforts focused on work intelligence in the AI era. Working with one of the world’s largest datasets on how work actually happens, she partners with global enterprises to benchmark performance, apply best practices and translate behavioral data into measurable improvements in productivity, workforce effectiveness and organizational design.

Sarah brings a decade of experience advising organizations through complex, large-scale transformations where workplace strategy, culture and business operations must evolve simultaneously. Her work spans global enterprises including Expedia Group, ExxonMobil and Wizards of the Coast, where she shaped the human-centered strategies required to sustain performance through periods of significant disruption — including headquarters relocations, mergers, operating model shifts and digital transformation.

At Expedia Group, Sarah directed change management for the relocation of 5,000 employees to a new headquarters, developing enterprise-wide readiness programs, behavioral research initiatives and cross-functional alignment strategies. When COVID-19 emerged during the transition, she supported the company’s pandemic response, enabling a rapid and coordinated shift to remote work at scale. At ExxonMobil, she supported leadership through the organizational and cultural complexities of one of the largest corporate headquarters projects in the world, alongside a concurrent merger integration.

Earlier in her career, Sarah advised enterprise organizations including Amazon, Nordstrom and Philips Healthcare on workplace strategy and new ways of working, applying human-centered research and design thinking to align employee experience with business performance. She also served as a researcher at APQC (the American Productivity and Quality Center), where she developed expertise in benchmarking, process improvement and organizational effectiveness.

At ActivTrak, she focuses on helping organizations operationalize work intelligence — enabling leaders to embed data-driven ways of working and drive adoption at scale. Her work emphasizes that sustainable performance gains require not just new technology, but a fundamental redesign of how work happens, supported by continuous measurement and organizational accountability.

Sarah’s areas of expertise include organizational design, workforce analytics, return-to-office strategy, employee listening at scale and change management in the context of AI and productivity technologies.
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