Yes. Two negative tests are required before an employee may be considered recovered. In addition, as with other viruses, COVID-19 may cause other complications that make it unsafe for the employee's own health to return to work even after the viral infection is cleared. Return to Work policies vary widely from company to company, but a doctor's note helps ensure the health and safety of the returning employee as well as other workers on site. The investigating health authority may impose additional protocols for return to work as well.