On March 19, the U.S. Department of State issued a Level 4 “Do Not Travel” advisory warning U.S. citizens to avoid all international travel due to the global impact of COVID-19. The U.S., Mexico, and Canada have also suspended all non-essential travel between the two countries. However, you generally cannot prohibit otherwise legal activity, such as travel abroad by an employee. While a federal court of appeals recently held that it is not necessarily a violation of the ADA to terminate an employee who refuses to cancel personal travel to an area of the world with a high risk of exposure to a deadly disease, you still could risk legal exposure, reduced employee morale, and negative publicity if you do so. This includes pregnant employees or those with medical conditions. However, you should educate your employees before they engage in travel to risky environments to try and work out a solution, and you can – and should – monitor those employees returning from such travel for signs of illness.