What do unions and environmental groups have to gain by working together and how do they overcome their differences? In Blue-Green Coalitions Brian Mayer answers these questions by focusing on the role that health-related issues have played in creating a common ground between the two groups. By recognizing that the same toxics that cause workplace hazards escape into surrounding communities and the environment workers and environmentalists are able to collaborate for the protection of all. Mayer examines three contemporary cases of successful labor-environmental alliances to demonstrate how health and safety issues are used to create durable and politically influential social movement coalitions: -Alliance for a Healthy Tomorrow a coalition of environmental labor community and public health organizations in Massachusetts that has developed a successful prevention-based approach to safe workplaces and a clean environment; -the Work Environment Council in New Jersey which succeeded in passing the first statewide right-to-know law and concentrates on protecting citizens from the dangerous toxics generated by the state s chemical industries; -the Silicon Valley Toxics Coalition an organization that began in the 1980s fighting hazardous high-tech practices that were affecting the Valley residents and the high-tech industry s largely immigrant workforce. In Mayer s ethnographic accounts of the challenging work of bringing these blue-green coalitions together it becomes clear that stereotypes about environmentalists and workers are largely irrelevant when thinking about who is at risk of exposure to dangerous toxic substances. Both movements share a common concern for protecting their members health from toxic hazards that are by-products of the modern industrial economy.