Which of the following statements is true regarding OSHA guidelines?

OSHA guidelines are indeed mandatory for most employers, which makes this statement true. The Occupational Safety and Health Administration (OSHA) was established to ensure safe and healthful working conditions by setting and enforcing standards as well as providing training, outreach, education, and assistance.

These guidelines apply to a wide range of industries beyond just construction, making them relevant to any employer in the private sector that has employees. This means that employers must comply with OSHA standards to help protect their workers from potential health and safety hazards in the workplace.

The other options reflect misunderstandings about the scope and application of OSHA regulations. For example, they are not limited to construction sites but are applicable across various industries. While there are certain OSHA recommendations that can be voluntary for smaller businesses under specific circumstances, the overarching regulations are generally mandatory, ensuring a baseline level of safety. Lastly, OSHA encompasses both health and safety standards, addressing a comprehensive range of workplace hazards.