Groups of laborers, also known as gangs, are a common form of labor organization in many industries. They are typically composed of a small number of workers who work together to complete a task or project. Gangs are often used in construction, mining, and other manual labor jobs, where the tasks require multiple people to complete. They are also used in some manufacturing processes, such as assembly lines. Gangs of laborers can be beneficial for employers, as they can increase efficiency and productivity.