Blue-collar workers are individuals who engage in manual labor or skilled trades. They often work in industries such as construction, manufacturing, and maintenance. These jobs typically require physical strength and technical skills, and they may involve operating machinery or performing hands-on tasks. Many blue-collar workers are employed in roles that do not require a college degree, although some may have specialized training or apprenticeships. Common examples of blue-collar jobs include electricians, plumbers, and factory workers. These workers play a crucial role in the economy by producing goods and providing essential services.