Which governing body addresses worker's rights and safety in Guam?

The Guam Labor Department is the primary governing body responsible for addressing workers' rights and safety in Guam. This department plays a crucial role in enforcing labor laws, protecting employee rights, ensuring safe working conditions, and overseeing labor-related regulations and standards. It also handles issues related to workplace safety, thereby promoting a safe environment for all workers in the territory.

In contrast, other options do not focus on worker rights or safety. The Department of Labor Relations typically handles issues surrounding the mediation and arbitration of labor disputes but does not directly manage worker rights or safety regulations. The Guam Power Authority is involved in the utilities sector, primarily focusing on electricity and energy matters, while the Guam Environmental Protection Agency deals with environmental regulations and issues, not labor or workplace safety. Thus, the Guam Labor Department's specific mandate makes it the correct choice for addressing worker's rights and safety in the region.