Which department helps mediate strikes and suggests laws to promote worker safety?

The Department of Labor is specifically tasked with mediating strikes and suggesting legislation aimed at promoting worker safety. This department plays a crucial role in overseeing labor laws and regulations that govern the workplace, ensuring that workers' rights are protected. It addresses labor disputes, provides support in negotiations between employers and employees, and develops policies to enhance occupational safety and health standards. By focusing on promoting safe working conditions and fair labor practices, the Department of Labor directly influences the dynamics between workers and employers, making it an essential entity in the realm of labor relations. The other options, while related to employment and workforce issues, do not have the same level of direct responsibility for mediating labor disputes or safety regulations.