This essay delves into the two economic phases of unionism, primarily focusing on the American Federation of Labor and the Congress of Industrial Organizations. It explores the roles of unions in maintaining worker rights, negotiating wage rates, and influencing labor demand and supply. The essay highlights how unionism impacts the economic conditions by improving the structure of the economy and securing the working conditions. It discusses the effects of high wage rates and good working conditions on competition among workers, skill development, and the potential for increased unemployment due to the marginal productivity of workers. The analysis also addresses how unions can maintain the rights and demands of workers while potentially affecting the job market for less skilled workers. Overall, the essay provides an overview of the economic factors influencing labor unions and their impact on market outcomes.