OSHA (the U.S. Occupational Safety and Health Administration) recommends that if an employee has been potentially exposed in the workplace that they be notified. What does exposed mean? If you’re in a complex with 50 buildings and it’s somebody 17 buildings over, you’re probably not exposed. Most employers are … trying to find out who’s been in close contact with this employee and they’re providing just a general notice that, “You may have been exposed in the workplace.” What you want as an employer is to identify people quickly, exclude them from the workplace, identify other people they’ve been in contact with, exclude them from the workplace, so you don’t have to have a continuing growing problem.