Who is referred to as a visitor at the work site?

The correct choice identifies a visitor at the work site as a person not under employer control. This reflects the understanding that a visitor, by definition, has no formal employment relationship with the organization and is present at the site for various reasons such as meetings, inspections, or other activities where they do not have the same obligations and responsibilities as an employee.

This distinction is critical in safety and operational protocols, as visitors often require different precautions and supervisor oversight compared to employees who are under direct employer control. Proper handling of visitors is essential to ensure their safety and the integrity of the work environment, as they may not be familiar with the specific safety practices or procedures in place.

Other potential choices do not accurately describe the nature of a visitor. For instance, a customer under employer control implies that the customer has some form of oversight or responsibility within the organization, which contradicts the definition of a visitor. Similarly, categorizing any employee on site or external auditors only would not specifically tie back to the definition of a visitor, while disregarding the broader spectrum of individuals who might visit the site but do not have an employer-employee relationship.