Americans have always joined together—whether in parent teacher associations or local community organizations—to solve problems and make changes that improve their lives and their communities. Through unions, people join together to strive for improvements at the place where they spend a large portion of their waking hours: work. The freedom of workers to join together in unions and negotiate with employers (in a process known as collective bargaining) is widely recognized as a fundamental human right across the globe. In the United States, this right is protected by the U.S. Constitution and U.S. law and is supported by a majority of Americans.1 Over 16 million working women and men in the United States are exercising this right—these 16 million workers are represented by unions. Overall, more than one in nine U.S. workers are represented by unions. This representation makes organized labor one of the largest institutions in America.2 By providing data on union coverage, activities, and impacts, this report helps explain how unions fit into the economy today; how they affect workers, communities, occupations and industries, and the country at large; and why collective bargaining is essential for a fair and prosperous economy and a vibrant democracy. It also describes how decades of anti-union campaigns and policies have made it much harder for working people to use their collective voice to sustain their standard of living.