Vitality's 2026 index finds most health-related productivity loss happens at work, not in absence records, so employers are tracking the smaller problem
Sick days tell U.S. employers only part of the story. Most of the productivity lost to poor health happens while employees are still on the job.
U.S. workers lose an average of 63.4 productive days a year to poor physical and mental health, according to Vitality's Global Health and Productivity Index 2026, conducted with RAND Europe. Just 9.5 of those days come from absence. The other 53.9, or 85 percent, are lost to presenteeism, when employees show up but can't perform at their best.
The index converts both missed time and reduced performance at work into full working-day equivalents. By that measure, the U.S. total sits well above the five-market average of 54.8 days and trails only Germany, at 69.3. Researchers surveyed 2,079 U.S. workers between Feb. 21 and March 16, 2026, as part of a poll of 9,206 workers in the U.S., the U.K., Germany, Japan and Singapore.
Poor workforce health costs the U.S. economy an estimated $2.33 trillion in lost productivity each year, the study found.
Vitality sells health engagement programs to employers and health plans, so it has a commercial interest in the findings. RAND Europe, an independent research organization, partnered on the analysis.
Absence data misses most of the loss
For those tracking employee health through absence records, the gap is hard to ignore. Absence accounts for roughly one in seven of the days lost to poor health.
"While absence often attracts the most attention from employers, it is presenteeism, when left unaddressed, that has the far greater impact on productivity," said Christian van Stolk, deputy chief executive at RAND Europe.
Thirty-two percent of U.S. workers say their health has a medium or high impact on their productivity while they're working. Another 14 percent missed more than four hours of work in the previous week because of health problems.
The health burden behind those numbers is heavy. Twenty-nine percent of U.S. workers are classified as obese, compared with a five-market average of 18 percent, and 65 percent report moderate or serious psychological distress.
Not every dip in performance is a health problem, either. A therapist recently walked HRD through the warning signs of rust-out and how it differs from burnout, another way employees can be present without being fully engaged.
Benefits built for treatment, not prevention
U.S. employers offer a broader range of health and medical support than employers in the other four markets, the index found. But that support leans toward treating illness rather than catching it early. Only 18 percent of U.S. workers report access to employer-organized health screenings.
"U.S. employers already invest heavily in health benefits, but the findings show a significant opportunity to use those systems differently," said Maia Surmava, CEO of Vitality U.S. She pointed to identifying risk earlier and putting more weight on prevention.
That argument arrives as health costs keep climbing. Regulators in New Mexico recently approved a 19.8% average rise in small group health premiums for 2027, topping the national median for a second year.
Managers and targeting are the levers
The index points to managers as one of the clearest places to start. Across all five markets, workers who feel their manager genuinely cares about their wellbeing lose nine fewer productive days a year than those who don't.
That lines up with Gallup research showing strong managers can ease AI-driven job fears. AI shows up in the Vitality data too. While 56 percent of U.S. workers say AI or digital tools make them more productive, workers across the five markets with high AI-related concern lost an extra 27.6 productive days a year compared with those who had none. About 12.9 percent of workers fell into that high-concern group, which skewed younger, less senior and already distressed.
The researchers identified five risk areas tied to lost productivity: mental wellbeing, physical health, AI-related concern, work strain and lifestyle. The risks stack. A worker at high risk in all five loses an estimated 119 productive days a year, close to half a working year.
And for a workforce losing more than 50 days a year to presenteeism, the biggest health cost may never show up in the absence report at all.
