About Us
We support your organization and people with trust, clarity, and care.
From social and labor insurance procedures and HR consulting to payroll,
we deliver accurate, compliant, and timely services that connect companies and people.
With bilingual support, we also assist foreign employees and global companies.
Values & Principles
Trust
Accurate, prompt, and sincere support.
Clarity
Plain explanations with clear decision materials.
Care
Empathy and practical help to reduce on-site burdens.
Global Mindset
Bilingual support and cross-cultural understanding for global HR needs.
Representative Profile
Yoshinao Iwaki
Certified & Specified Labor and Social Security Attorney
Career Summary
- Born in Adachi, Tokyo, 1958 (Showa 33)
- Registered as Labor and Social Security Attorney in May 1990
- Founded Iwaki Labor Management Office (May 1990)
- Renamed to I.O.I Labor Consulting (April 1992)
- Obtained “Specified Attorney” qualification (April 2007)
Main Positions
- Director, Tokyo Labor and Social Security Attorneys Association (2013–2017)
- Vice President, Tokyo Federation of Labor and Social Security Attorney Political League (2017–Present)
- Delegate, National Federation Political League (2017–Present)
- Executive Member, National Federation Political League (2020–2022, 2025–Present)
Representative’s Message
Our core belief is to help both organizations and the people who work there grow continuously together. We listen carefully to your challenges and provide the most appropriate procedures under strict compliance — accurately and promptly. When needed, we communicate in English and strive to make every step clear and reassuring.
As your trusted partner, nothing makes us happier than supporting your company’s sustainable development and growth.
Yoshinao Iwaki
Representative / Certified & Specified Labor and Social Security Attorney
Office Information
| Office Name | I.O.I Labor Consulting |
|---|---|
| Representative | Yoshinao Iwaki, Certified & Specified Labor and Social Security Attorney |
| Address | 2-5-11 Nishiarai-Sakae-cho, Adachi-ku, Tokyo 123-0843, Japan |
| TEL | +81-3-5845-3677 |
| FAX | +81-3-5845-3688 |
| Business Hours | Weekdays 9:30–17:00 (JST) |
| Service Area | Tokyo & Kanto region (nationwide online support available) |