The Institute for Women’s Policy Research has been conducting research and providing technical assistance on paid sick days to members of Congress, state legislatures, municipal governing bodies, and other groups since 2000. We have been assessing paid sick days in the District of Columbia since 2004. Analyzing data collected by the U.S. Department of Labor and the National Center for Health Statistics of the U.S. Centers for Disease Control and Prevention and research findings published in peer-reviewed journals, I have documented inadequacies in current paid sick days policies and calculated the costs and benefits of expanding workers’ access to paid time off for sickness.