Makoto Ohsugi


Makoto Ohsugi’s practice covers general corporate matters and commercial transactions, M&A and commercial transactions, labor and employment, disputes on international and domestic commercial transactions including international commercial arbitration procedures, and labor disputes (mainly acting for employers).
He is also qualified as CFE (certified fraud examiner).


Attorney at Law


Japan (2004)


Dai-ni Tokyo Bar Association

Labor Issue Committee of Daini Tokyo Bar Association

Association of Certified Fraud Examiners (ACFF Japan)

The Family Business Advisors Association Japan(FBAA)

Japan Corporate Governance Network

The Japan Society for Artificial Intelligence

Professional Experience

2014 – present

Sonderhoff & Einsel, Law and Patent Office

2010 – 2014

K&L Gates Gaikokuho Joint Enterprise

2004 – 2010

Mori Hamada & Matsumoto



University of Southern California Gould School of Law (LL.M.)


Keio University (LL.B.)


“Understanding the Business Culture as well as the Legal Issues for a Successful M&A Transaction in Japan”(Lexis Nexis Japan Lawyers Guide, 2016/17) 2016


“Guidebook for Labour Issues in M&A Deals” (Chuo Keizai-sha, co-author) 2007


“COVID-19 and Human Resources Management” (Wantedly, Inc.) 2020


“Japan’s Labor Officials Newly Aggressive Actions To Enforce Overtime Regulations – Overview of the MHLW’s Team to Eliminate Excessive Work and Practical Ways Companies Can Deal with Overtime Issues” (Asian Legal Business, Japan In-House Legal Summit) May 2017


“Japan’s Regulations and Key Issues on Employment Contract” (German Chamber of Commerce and Industry in Japan) 2016


“Protection of Trade Secrets and the Unfair Competition Act” (Winter School University of Augsburg, Germany) 2016


“Countermeasures for Mental Health Issues for Persons in Charge of HR” (German Chamber of Commerce and Industry in Japan) 2015


Japanese, English