Which of the following statements about employee health reporting is true?

The statement that all illnesses must be reported is true because maintaining a safe food establishment requires that any health condition that could potentially impact food safety or employee performance be communicated to management. This helps ensure that proper precautions can be taken to prevent the spread of illness, particularly in environments where food is prepared and served.

All illnesses, not just contagious ones, can affect an employee's ability to work safely—for example, allergies, gastrointestinal issues, or even general fatigue can impact their job performance and food handling abilities. By encouraging comprehensive reporting, the establishment can effectively manage any health risks and protect both employees and customers from potential foodborne illness outbreaks. This holistic approach to health reporting is vital in maintaining food safety and operational integrity.

The other statements limit the scope of what should be reported and do not reflect the comprehensive and proactive stance that food safety regulations generally encourage.