This report analyzes the policy contributions of Ruth Lister, a prominent UK social scientist known for her research on poverty, social security, and the welfare state. The report begins with an introduction to Lister's background and expertise, highlighting her work in poverty research and her influence on policy development. It then delves into Lister's contributions, focusing on her research methods, which often involved strong gender dimensions and collaborative approaches. The report examines Lister's motives for advocating for social policies, including poverty reduction, social security, and social justice. It also explores the impact of her work on understanding social problems such as social exclusion, discrimination, and gender inequality. The report concludes with an evaluation of Lister's overall contribution to policy and our understanding of social issues, emphasizing her influence on social policies and her role in shaping debates around poverty, welfare, and social justice. The report references various books and journals to support its analysis, demonstrating Lister's lasting impact on the field of social policy.