Public health officials recommend that people take the same precautions for preventing the spread of COVID-19 as they do the flu. A pdf flyer is available here.
Preventive measures include frequent handwashing, covering the mouth and nose when coughing or sneezing, avoiding touching your eyes, nose or mouth, avoiding close contact with sick people, and to stay home when you are sick.
Additional protections at work include cleaning frequently touched objects and surfaces like doorknobs and phones, cross-training employees to provide additional cover in the event that illnesses occur, keeping tissues, soap, paper towels, and disposable wipes available at work, and go home if you feel sick. Face masks are generally not successful in preventing the spread of COVID-19.