This report examines the public health, worker safety, and environmental benefits projected from ten proposed or final rules issued between 2009 and 2014 by five federal agencies (the U.S. Environmental Protection Agency, Occupational Safety and Health Administration, National Highway Traffic Safety Administration, Food and Drug Administration, and Department of Agriculture’s Food Safety and Inspection Service). These rules range from reducing toxic air pollutants from power plants and other large industrial sources, to reducing workers’ exposure to disease-causing silica, and to making vehicles safer.