Work gangs are groups of people who work together to complete a task or job. They are usually composed of skilled workers and are often used in construction, mining, and other labor-intensive industries. Work gangs are typically organized by a supervisor or foreman and can be made up of anywhere from two to dozens of workers. The term 'crews' is often used interchangeably with work gangs, as they both refer to groups of people working together to complete a job.