In family law cases involving children, the best interests of the child will be the primary concern. If joint custody would be in a child's best interest, you and your ex may put arrangements in place to ensure that you will both be closely involved in your children's lives. Joint custody will ensure that you will both be able to participate in making decisions about how your children will be raised, and your children will be able to spend regular, ongoing time with both parents. Sole custody may be an option, although it will usually only be used if there are concerns about children's health, safety, or well-being while they are with one parent.