Use the information contained in the summary of the FMLA to discuss how the students can take leave to care for a parent or spouse and still keep their jobs. Discuss how to handle family responsibilities at work. It is not appropriate for family members and friends to drop in at work on a frequent basis. If a family member needs to visit you at work, get permission from your supervisor. It should not be a social visit.
Emergencies happen to families.
There are very few bosses that are not going to understand if you have to leave because someone has been in an accident, someone is stranded with car troubles, or someone is sick. However, if this happens frequently, your boss is going to want to know if you are working for the emergency service or for her. Again, the important thing is communication. Don't leave your job site for 30 minutes to handle a crisis over the phone. Go and talk to your boss and tell him what is up.