You might think that white-collar workers clock in for the 9-to-5 grind, while service employees work longer hours at a smaller wage. But according to new research published by the Washington Center for Equitable Growth, this isn’t always the case in the U.S.

Recent data shows highly paid Americans (think people who work in law, business management, engineering, and finance) often put in more than 40 hours per week, whereas people in low-income service jobs, like health care support and food preparation, actually work less. This article by The Weekdiscusses the trend and how it might be the result of the competitive job market and the cutthroat nature of high-paying industries. Click below to read the full story.