What type of workers did the American federation of labor focus on organizing?

The American Federation of Labor (AFL) primarily focused on organizing skilled workers, such as craft and trade workers, who had specific expertise in their fields. This included professions like carpenters, electricians, and machinists. The AFL aimed to improve their wages, working conditions, and job security through collective bargaining and union representation, distinguishing itself from more inclusive labor organizations that sought to represent unskilled workers as well.