Shinjuku Pension Office
〒160-8601 東京都新宿区新宿5-9-2 MipLa新宿五丁目ビル（3～8階）
The Shinjuku Pension Office (新宿年金事務所) is the Japan Pension Service office for employees' pension and, for Kyokai Kenpo members, health insurance.
Jurisdiction
Also covers areas outside the cities on this site: 船員保険: 東京都
What employers file here
- Social insurance registration (新規適用届) when the company starts: every corporation paying even one person must join
- Enrolment (資格取得届) within 5 days of each hire, and loss of status (資格喪失届) within 5 days of leaving
- The annual earnings report (算定基礎届) by 10 July
- Notice of a large pay change (月額変更届) and bonus payment report (賞与支払届, within 5 days)
- Large companies must file these online through e-Gov
Questions
Which areas does the Shinjuku Pension Office cover?
Shinjuku (Tokyo), Nakano (Tokyo) (part), Suginami (Tokyo) (part), and areas outside the cities listed here.
What is the address and phone number of the Shinjuku Pension Office?
MipLa Shinjuku 5-chome Bldg 3F-8F, 5-9-2 Shinjuku, Shinjuku-ku, Tokyo; phone 03-3354-5048.
What do employers file at the Shinjuku Pension Office?
Social insurance registration (新規適用届) when the company starts: every corporation paying even one person must join. Enrolment (資格取得届) within 5 days of each hire, and loss of status (資格喪失届) within 5 days of leaving. The annual earnings report (算定基礎届) by 10 July. Notice of a large pay change (月額変更届) and bonus payment report (賞与支払届, within 5 days). Large companies must file these online through e-Gov.
Jurisdictions checked against each office's official site on 21 October 2026. Offices merge and move: confirm on the official page before you file.