Two sided.
Some likely problems include:
1) Discipline issues: How easy will it be to discipline the family member you are considering hiring? What will you do if he or she doesn’t live up to your expectations? Will you feel comfortable doing employee reviews of the person?

2) Gossip: Family members who work in the business may gossip about your personal life with nonfamily employees or may tell your family members things about your business that you’d rather keep private

3) There’s also a chance that the friend or family member you choose to hire might take advantage of you. If they can’t take you seriously as a boss, odds are they’ll talk to other employees about you in a manner that undermines your authority and causes you to lose your image as the person in charge.