Occupational Safety and Health Administration (OSHA): 

Federal agency that is responsible for enforcing safety and health regulations in the workplace. OSHA provides resources and training to employers and workers to help prevent workplace injuries and illnesses.

National Safety Council (NSC): 

Nonprofit organization that focuses on eliminating preventable deaths in the workplace. NSC provides training, education, and advocacy on workplace safety issues.

American Society of Safety Professionals (ASSP):

A global association for safety professionals. ASSP provides education, resources, and networking opportunities to its members to promote safety in the workplace.