The CDC advises that critical infrastructure workers may return to work after potential exposure, so long as they remain asymptomatic and the following additional precautions are taken:

• Prescreening the employee’s temperature; we do this every day.
• Regular monitoring under the supervision of the employer’s occupational health program;
• Employees wear a masks at all times in the workplace
• Workplace social distancing;
• Regular and thorough disinfecting of all work areas, especially common areas.