How often do you yawn on the job?
Nearly 78 percent of Detroit workers said they work while tired at least somewhat often, according to a study by Accountemps.
Detroit tied with Boston, Dallas and San Francisco at #8 for the U.S. cities with the sleepiest staff.
Nashville came in #1.
The staffing company's survey found a growing number of workers report being tired on the job these days.
Exhausted workers can lead to more on-the-job errors, a decrease in effectiveness and workplace issues like high staff turnover and toxic environment.
Accountemps surveyed more than 2,800 workers age 18 and older employed in office environments across the country.