This document defines key terms and outlines the social security system in the Philippines as established by law. It covers compulsory and voluntary coverage, contributions and benefits. Compulsory coverage includes all employees under 60 and self-employed individuals. Benefits include monthly pension, dependent's pension, retirement benefits, death benefits, disability benefits, loans and more. The duties of employers and remedies for non-payment of contributions are also described. Disputes are settled by the Social Security Commission and courts.