Stress at work may be as bad for your health as secondhand smoking, according to a recent study.

Researchers from Stanford University and the Harvard Business School found that people who are worried they might soon lose their jobs are 50 percent more likely to have poor health.

"When you think about how much time individuals typically spend at work, it's not that surprising," Joel Goh, study co-author and an assistant professor of business administration at Harvard Business School, told CNN News.

For the study, researchers reviewed more than 200 studies that looked at the effects of 10 workplace stressors on employee's medical condition, physical health, mental health and mortality.

The results found that in addition to work stress significantly increasing an employee's chance of poor health, it was also associated with the presence of a diagnosed medical condition, self-reported poor physical health, self-reported poor mental health and mortality.

Researchers found that workers with high job demands are 35 percent more likely to be diagnosed with a medical condition that those without a stressor and long hours were associated with a 20 percent greater mortality risk, The Market Business reported.

They found that workplace stressors "predicted negative health outcomes nearly as well as exposure to secondhand smoke does," Rapid News Network reported.

Goh told CNN News he hopes the study will help companies "think about the way they manage their employees."