&BIZ is a restricted site for Mitsui Office.

We support the business and business life of tenant companies and their employees.
Please use &BIZ to connect with Mitsui Office, where about 300,000 people have come together, to grow your business and staff, to ensure safety in times of emergencies, and to take advantage of service benefits.
If you are not sure if you can register as a member of &BIZ, please contact us.

Please input the information registered with WORK STYLING in the MAIL/PASSWORD section of the next screen.

It is not necessary to input part of the registration information, as this page links with the information registered to WORK STYLING.

Please enter your business email address.
The system will differentiate large and small capitals, so please carefully confirm the email address when entering it.

* The email address you enter will be your &BIZ login ID.
* The Passcode for registering user information (valid for 3 days) will be sent to the email address you entered.
* The email address you enter will be the same as the login ID for WORKSTYLING.
* If you have a free email service (, etc.), you will need to enter your company ID separately.