noun
annuity bond; pension certificate
A document certifying entitlement to a pension or annuity, typically issued by a government or insurance entity.
年金証書を紛失した場合は、再発行の手続きが必要です。
If you lose your pension certificate, you need to apply for a reissue.
年金手帳 is a pension handbook used for recording contributions, while 年金証書 is a certificate proving entitlement to receive benefits.
Compound of 年金 (pension, annuity) and 証書 (certificate, bond).