This project is designed to analyse and compare legal approaches to addiction to alcohol and other drugs (AOD), identifying the strengths and weaknesses of different approaches. Harms associated with AOD cost Australia over $25 billion per year. The law plays a central role in managing these harms. Yet legal responses to AOD and the key concept of 'addiction' are often inconsistent. These variations have unintended and often adverse economic, social and health implications. The expected project outcomes will inform new, more productive approaches to AOD-related harms in Australian law, contributing to improved economic, social and health outcomes.