A new study from the mattress retailer Amerisleep finds that widespread "Sunday Scaries" are cutting into worker sleep and undermining productivity at the start of the workweek, with implications for employee retention, workplace safety and employer risk.
The report shows that a majority of workers experience anxiety heading into Monday, and that stress frequently disrupts sleep the night before the workweek begins. Among employees with higher anxiety levels, 71% say lost sleep negatively affects their Monday performance — contributing to slower response times, errors and irritability.
"Sunday-night anxiety can be an early warning sign of turnover. It shows the employee's stress is spilling into their non-work time," Dr. Jordan Burns, Amerisleep's resident sleep expert, said in a statement prepared for PropertyCasualty360.com. "For employers, the actionable takeaway is to treat Sunday Scaries like a leading KPI. If your people can't mentally 'close the week,' you're going to see higher absence frequency, and, ultimately, more attrition."
The findings highlight a growing connection between employee well-being and operational risk. Poor sleep tied to weekend anxiety doesn't just affect individual performance — it can increase the likelihood of workplace mistakes and incidents, particularly in high-stakes environments.
Sleep loss carries a cost.
"Anxious workers say lost sleep hurts Monday performance, and 71% of those with higher anxiety levels report it," Burns said. "This dip in performance shows up as errors, slower response times, and short tempers, which are exactly the conditions that cause workplace incidents and claims in high-stakes roles."
The study also points to a cultural issue around always-on work expectations. Many employees struggle to disconnect over the weekend, leaving them mentally unprepared for the week ahead. Only a small share of workers report feeling calm on Sunday nights, underscoring the scale of the problem.
Experts say employers can mitigate the impact by setting clearer boundaries and reducing uncertainty at the start of the week.
"Companies should set a real weekend communications boundary and help to reduce Monday-morning ambiguity," Burns said. "If only 15% feel peaceful on Sunday nights, the competitive advantage is being the employer that makes Sunday feel like a weekend."
The report suggests that addressing weekend work anxiety is not just a wellness initiative, but a business imperative — affecting productivity, safety outcomes and long-term workforce stability.
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