Which of the following is NOT required for a pest control business that employs people?

The choice indicating that at least two service vehicles is not a requirement for a pest control business that employs people is correct. The laws and regulations concerning pest control businesses focus on ensuring safety, compliance with environmental standards, and the welfare of employees. While having service vehicles is necessary for operational purposes, there is no specific regulation mandating a minimum number of vehicles a business must possess.

On the other hand, workers' compensation insurance is a legal requirement for businesses with employees, as it provides coverage for work-related injuries or illnesses. Having 24-hour phone service is often essential for customer service and emergency response, reflecting a business’s commitment to reliability and accessibility. A permit from the Office of Environmental Health Hazard Assessment is typically mandated to ensure that businesses operate within environmental safety guidelines. Therefore, the absence of a requirement for a set number of service vehicles distinguishes this option from the others.