On the days that they worked, employed men worked about three-quarters of an hour more than employed women.
This difference partly reflects women's greater likelihood of working part time. However, even among full-time workers (those usually working 35 hours or more per week), men worked slightly longer than women—8.2 versus 7.8 hours.
Among part-time workers, men averaged 5.2 hours on days they worked and women averaged 5.4 hours.
Bureau of Labor Statistics, U.S. Department of Labor, The Economics Daily, Average hours that men and women worked in 2007 at https://www.bls.gov/opub/ted/2008/jun/wk4/art04.htm (visited October 04, 2023).