Reunification is the first permanency option state and local child welfare agencies consider for children entering care. It is also the most common permanency resolution for children leaving foster care. In many ways, reunification is the most challenging path. However, it is most desirable for a child to maintain existing attachments when it is safe to do so and when the bonds support the well-being of the child. Reunification services include family preservation, parenting support, counseling, and substance abuse and domestic violence treatment. Successful permanency through reunification requires many things, including, at minimum, skilled caseworkers, readily available support and treatment resources, clear expectations and service plans, and excellent collaboration across involved agencies.