You can develop chickenpox as a result of exposure to a person with shingles if you have not had chickenpox before, but only through direct skin contact with that person’s oozing blisters. When the blisters are dry and crusted over, they are no longer infectious.
People with shingles should be able to continue to work in most areas if they feel well and the affected area can be adequately covered by clothing. However, it should be noted that shingles can vary from very mild with no pain or discomfort to extremely painful and debilitating, and staff may need to take time off to recover.