This chapter outlines the history of case management in the field of developmental disability, and provides a rational and evidence base for more contemporary approaches. Contemporary principles underpinning the delivery and their families include self-determination and empowerment. These principles are operationalised through a process known as ‘person-centred planning’ wherein the person with a disability is the focal point for the planning process. Where relevant, family members, friends and general community members assist in defining the person’s friends and general community members assist in defining the person’s profile and their future vision, and identify how formal and informal network can provide support. Critical to this process are the preferred goals of the person with the disability towards achieving a satisfying quality life. In this chapter, discussion will be guided by a case study. The case study will develop as the chapter unfolds, demonstrating in practical terms the evolutionary changes in case management practices in the developmental disability field