This document summarizes a study analyzing the Seoul 50 Plus Project in South Korea, which provides social services to support sustainable social participation for those aged 50 and older. The study examines how the project integrates various services through factors like accessibility, systematic function distribution, and participation. It finds that providing interconnected services around leisure, hobbies, and self-development, along with links to related jobs and social contributions, is important for supporting the 50 plus generation. The document also reviews literature on social welfare delivery systems and services in other countries to support social participation for those aged 50 and older.