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RIKEN staff and Alumni

The RIKEN Portal (employees only)

The RIKEN Portal is an internal site where RIKEN employees can view notices and other important information.

RIKEN Portal Site

Issuing official RIKEN certificates

Note: If you currently work at RIKEN, apply from the JINJI-Application system.

Certificate of Employment / Affiliation, and Certificate of Termination of Employment

Electronic certificates can be issued for the above certificates. To request an electronic certificate, fill out and attach the "Application for certificate" and send it to the e-mail address below. If there is a designated form, please attach that as well. (If an official seal is required, we will issue the certificate with an electronic seal.)

If an original copy (paper) of the certificate is required, please post-mail the "Application for certificate" and a self-addressed, stamped envelope to the address below. If there is a designated form, please enclose that as well.

[Application for certificate / Application for certificate]

Address: Human Resources Strategy Section (official RIKEN certificates),
Human Resources Division, RIKEN,
2-1 Hirosawa,
Wako, Saitama,
351-0198, Japan

Contact

Human Resources Strategy Section, Human Resources Division
jinji-shomei@ml.riken.jp

Note: It usually takes about two weeks to issue the certificate, and longer during the busy period.
Please apply well in advance.

Certificate of Salary, Income Tax Slip, Certificate of Loss of Social Insurance Eligibility

Please post-mail the Application for certificate / Application for certificate to the address below with a self-addressed, stamped envelope.

Address: Personnel Affairs Section (official RIKEN certificates),
Human Resources Division, RIKEN,
2-1 Hirosawa, Wako, Saitama,
351-0198, Japan

Note: With regard to income tax slips, we issue them to those who are leaving RIKEN around the 20th of the month following the month the employee left RIKEN. If you wish to request a reissue, we can send it to you in PDF format. To get a reissue, please send an e-mail to the following address with the subject "Income Tax Slip Issuance Request" and include your ID, name, date you left RIKEN, position and affiliation (including lab name) at the time of retirement, and state the year for which you require an income tax slip in the text of the Email.

Contact

Human Resources Strategy Section, Human Resources Division
jinji-shomei@ml.riken.jp

Email forwarding service (A Mail)

This email service serves as a network connecting those who have left RIKEN to RIKEN's current news and happenings by sending out timely information from our internal divisions.

A Mail:

This service automatically forwards emails from your official RIKEN email address to your personal email address.

  • Emails sent to your public address are forwarded as-is to your private email address.
  • You can change the address where you receive forwarded emails whenever you like.
  • This service is available to those currently at RIKEN and people affiliated with RIKEN in the past.
Diagram showing the system of A Mail
  • 1.Who is eligible for this service? (Conditions for use)
    Those who have been affiliated with RIKEN in the past (including Student Trainees, Research Fellows, Temporary Staff, and other such positions).
    • *We will confirm your history of RIKEN affiliation based on the information given when you apply.
    • *Those affiliated through employment by contractors are not eligible for this service.
    IMPORTANT NOTE: If you left RIKEN on or after September 1, 2017…
    You have already been issued an address through this service, so there is no need to apply. Please register a new forwarding email address if necessary.
  • 2. Service contents
    Fee: Free
    Emails delivered to the address created with this service are automatically forwarded to another designated email address.
    Important points:
    • 1.Email addresses created with this service are for forwarding only. There is no mailbox for these addresses.
    • 2.You will need to provide a separate email address to serve as a forwarding address. It should be an address you use regularly that is capable of receiving mail.
    Format of the email address:
    The address is based on the name given when you apply.
    [first name] . [last name] . [2 letters to prevent repeating addresses] @a.riken.jp
    Example: If your name is Taro Riken ⇒ taro.riken.xx@a.riken.jp
  • 3.

    How to apply
    Send an email with the below information to our office at ob_address@ml.riken.jp.

    Name (include kanji and furigana if you have them):
    RIKEN ID (if you know it):
    Your lab/division when you left RIKEN:
    When you were at RIKEN (no need to give exact dates):
    Email addresses where you want to receive forwarded mail (up to 3):

    • *When we receive your application email, we will check your history of RIKEN affiliation. Once we confirm this, we will send an email to your provided forwarding address to let you know you can start using the service.
    • *You can change the forwarding address at any time once you start using the service.
  • 4.Closing of the "alum" service
    Email addresses with "alum" will be discontinued on December 31, 2026.
    The "alum" service will be integrated with the A Mail service described above. If you have an "alum" email address, once the service is discontinued, the portion after the "@" will automatically change to "@a", and the portion before the "@" will remain the same.
    There is no need to reapply or register new information - you can continue using this email address as-is after it changes.

Inquiries and frequently asked questions

FAQs: See the page RIKEN Alumni Email Service FAQ for details on the system, such as how to change the forwarding address.
Inquiries: ob_address@ml.riken.jp (RIKEN Alumni Email Service Secretariat)

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