Final answer:
Labor and industrial relations refer to the ideas developed by labor unions and worker organizations to protect workers' rights and improve working conditions.
Step-by-step explanation:
The idea of 'Labor and Industrial Relations' refers back to older ideas developed by organizations of workers and labor unions, who worked together to protect their rights and further their interests. These organizations advocated for better wages, work hours, safety in the work environment, an end to child labor, health benefits, and worker support programs. The labor movement in the United States has a long history, with various unions and leaders working to improve working conditions for workers and promote solidarity among laborers.