国民年金 is Japan's national pension system designed to provide financial support to citizens during retirement. It is mandatory for all residents aged 20 to 59, ensuring that everyone contributes to their future pension benefits. The system is funded through monthly contributions, which vary based on income levels. Upon reaching retirement age, individuals can receive a pension based on their contribution history. 国民年金 also offers benefits for disability and survivors, helping those who are unable to work or have lost a family member. This system plays a crucial role in Japan's social security framework.