What is the mission of OSHA?

The mission of OSHA (Occupational Safety and Health Administration) revolves around ensuring safe and healthful working conditions for workers by setting and enforcing standards. This aligns perfectly with the option focused on preventing work-related injuries and fatalities. OSHA's primary objective is to reduce the incidence of workplace hazards that could lead to accidents, illnesses, or fatalities. By conducting inspections, enforcing safety regulations, and providing training and resources, OSHA seeks to create a safer working environment, thus protecting the health and well-being of employees across various industries.

The other options, while important aspects of workers' rights and welfare, do not directly pertain to OSHA's specific mission. OSHA does not oversee equitable pay, healthcare benefits, or labor union activities; these areas are covered by different laws and organizations focused on labor rights and economic issues. Therefore, the focus on injury prevention and workplace safety is the core of OSHA's mission.