Many states and localities, as well as the U.S. Congress, have considered legislation or ballot measures requiring that employers provide paid sick days to their workers. Such laws have been approved in the state of Connecticut, the cities of San Francisco and Seattle, and the District of Columbia. There has been much debate about the merits of such laws—which could affect the lives of the two-fifths of private sector employees without access to paid sick days—particularly regarding the costs and benefits for affected employees and businesses, as well as health effects for employees. This report focuses on the potential impact of paid sick days on the health of employees and their families and presents the following findings.