Heads up: You’re going to want to keep a close eye on those workhorses who log a significant amount of overtime week after week.

Why? A recent study at the University of Glasgow found that people who work more than 10 hours a day are approximately 60% more likely to develop heart disease or have a heart attack than people who work seven hours per day.

In fact, during the study, 369 of the 6,000 subjects had heart attacks – sometimes fatal ones – or were diagnosed with heart disease.

Workplace experts say the results of the Glasgow study can be directly translated to business in the United States.

Even if your company can’t afford to bring in more workers, it may be a good idea to talk to your employees about the health risks associated with constantly working extra hours. You may even want to lower the cap on the number of overtime hours employees can work during the week.

Tags: Europe, Heart attack, Heart disease, Heart-attack risks, University of Glasgow, Workhorses, Workplace behavior