Which of the following is a requirement under the Occupational Safety and Health Act (OSHA)?

The requirement under the Occupational Safety and Health Act (OSHA) mandates that employers maintain a safe and healthful workplace for their employees. This legislation was enacted to ensure that workers are provided with a work environment that is free from recognized hazards that could cause death or serious physical harm. It imposes specific obligations on employers to identify and mitigate potential risks, conduct regular safety inspections, and provide necessary training to employees regarding workplace hazards.

The other options do not fall under OSHA's jurisdiction. For instance, providing health insurance, paying overtime, and offering paid vacations are matters primarily governed by different laws and regulations, such as the Affordable Care Act and the Fair Labor Standards Act. Therefore, while employers have various responsibilities related to employee benefits and compensation, maintaining a safe workplace is specifically a core requirement established by OSHA.