The following highlighted best practices are based upon a literature of recent CHW cost-effectiveness research. The purpose is to draw out CHW program elements that have been found important to success and, where available, to cost-efficacy. It should be noted that the research, particularly in the United States, is only recently emerging. Most of what is available is focused on populations who face health disparities due to racial, ethnic, immigration, and language barriers; often within urban contexts, as opposed to the low-income, rural populations such as comprise a large sector of potential need in Maine.