The Local Youth Development Office (LYDO) in the Philippines, mandated by the SK Reform Law (RA 10742), plans, implements, and monitors programs for youth welfare, development, and empowerment, working with the Sangguniang Kabataan (SK) to promote youth participation in nation-building, covering areas like education, livelihood, health, and social protection. Its core functions include facilitating the Local Youth Development Council (LYDC), supporting SK activities, providing technical assistance, and coordinating with the National Youth Commission (NYC).