This briefing paper uses data collected by the U.S. Bureau of Labor Statistics, the Centers for Disease Control and Prevention, and the U.S. Census Bureau to evaluate the costs and benefits of Maryland’s Earned Sick Days Act. It estimates how much time off Maryland workers would use under the proposed policy and the costs to employers for that earned sick time. This analysis also uses findings from previous peer-reviewed research to estimate cost-savings associated with the proposed policy, through reduced turnover, reduced spread of contagious disease in the workplace, increased productivity, minimized nursing-home stays, and reduced norovirus outbreaks in nursing homes. This study is one of a series of analyses conducted by IWPR examining the effects of earned sick leave policies.