Blue-collar workers are individuals who work in manual labor jobs that typically require physical labor, specialized skills, and technical knowledge. Examples of blue-collar jobs include construction workers, mechanics, factory workers, plumbers, and electricians. These workers may also be referred to as working-class or labor-class individuals. They often work in industries such as manufacturing, construction, mining, and transportation. Blue-collar workers are generally paid hourly wages and may belong to a trade union or an organization that represents their interests.