noun
social insurance office
A government office that handles social insurance matters such as health insurance and pensions. This term was used before the offices were reorganized into 年金事務所 (pension offices) in 2010; it may still appear in older documents or be used informally.
社会保険事務所で年金の手続きをした。
I completed the pension procedures at the social insurance office.
年金事務所 is the current name for the offices that replaced 社会保険事務所 in 2010, focusing specifically on pension services.
Compound of 社会 (society), 保険 (insurance), and 事務所 (office).