About Us
A labor and social security attorney who explains Japan's labor law in plain English — so your business can operate here with confidence.
A note from the representative
Japan's labor law,
explained clearly.
Sakaguchi Labor and Social Security Attorney Office is based in Yokohama, supporting foreign-affiliated companies across Japan. With over 30 years in Japan's telecommunications industry — including management roles at Japanese and multinational companies — I bring firsthand experience of how Japanese and international business practices differ.
Japan's labor regulations are detailed, strictly enforced, and often unfamiliar to companies used to operating under different systems. My role is to handle your social insurance and labor insurance procedures accurately, and to explain — clearly, in English — what Japanese labor law requires and why, so your business can prevent unnecessary risk before it happens.
Whether you're setting up your first entity in Japan or managing an existing team, my aim is to be the advisor who lets you operate and grow here with confidence, fully in your own language.
Experience you can rely on
Representative profile
| Name | Takashi Sakaguchi |
|---|---|
| License | Licensed Labor and Social Security Attorney — Registration No. 14240048 (Kanagawa Association of Labor and Social Security Attorneys) |
| Background |
30+ years of experience in Japan's telecommunications industry. Site management and project management roles, followed by management positions at major Japanese and multinational telecommunications companies. |
| Focus Areas | Social insurance & labor insurance procedures for foreign-affiliated companies／Japan labor law advisory in English／Employment contracts & work rules／HR systems and AI-driven efficiency support (available on request) |
| Career History |
Mitsui Home Tu-Ka Cellular Tokyo (merged into KDDI) SoftBank Nokia Solutions and Networks |
| Education | Seikei University, Faculty of Law |
| Other Qualifications |
Project Management Professional (PMI) Class 1 Telecommunications Construction Management Engineer Construction Supervising Engineer |
Office details
| Office | Sakaguchi Labor and Social Security Attorney Office |
|---|---|
| Address | Arena-dori Bldg 3F, 3-7-7 Shin-Yokohama, Kohoku-ku, Yokohama, Kanagawa 222-0033, Japan |
| Representative | Takashi Sakaguchi |
| Service Area | Based in Yokohama, serving companies across Kanagawa and Tokyo (online consultations available) |
| Hours | Mon–Fri 9:00 — 18:00 (closed weekends & holidays) |