Yoji Maeda


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As head of O’Melveny’s Tokyo office, Yoji Maeda’s broad practice covers business trial and litigation, labor and employment matters, and merger and acquisition work. Leveraging his experience with both US and Japanese courts, Yoji handles litigation and arbitrations for clients domestically and internationally. He creates complex litigation strategies for mass tort cases and for labor disputes before Japanese courts and labor commissions. Non-Japanese companies frequently look to Yoji for advice on how to structure labor and employment agreements in accordance with Japanese laws.

In addition to his trial experience, Yoji advises on merger and acquisition and private equity transactions, primarily on inbound cross-border investments. Yoji has a wealth of experience and is considered one of the leading legal advisors on M&A transactions in Japan.

A native and citizen of Japan, Yoji received his LL.B. degree in Law from the Faculty of Law, Tokyo University, in 1988. He also received his LL.M. degree from the University of Virginia Law School in 1994. He passed the pre-bar examination in 1987 and received his law degree from the Legal Research and Training Institute of the Supreme Court of Japan in 1990. He is admitted to practice in Japan and New York.


  • Japanese

Honors & Awards

  • Named a “Litigation Star” in Commercial & Transactions by Benchmark Litigation (2022-2023)
  • Dispute Resolution in Chambers Asia-Pacific and Chambers Global
  • Dispute Resolution in The Legal 500 Asia Pacific
  • Leading individual for Labour and Employment in The Legal 500 Asia Pacific
  • Local Disputes Star - Japan for Arbitration, General Commercial and Labor and Employment in Benchmark Litigation 
  • Leading lawyer in Japan in Asialaw Leading Lawyers
  • Notable practitioner for Employment in Chambers Asia-Pacific
  • Recognized by Best Lawyers in Japan for Labor and Employment, Arbitration and Mediation, International Arbitration, and Litigation


Bar Admissions

  • Japan
  • New York


  • University of Virginia, LL.M., 1994
  • University of Tokyo, LL.B., 1988

Professional Activities


  • Author of many books and articles covering a variety of areas, including FCPA, antitrust, M&A, product liability, civil procedure, and employment law


  • Dai-ni Tokyo Bar Association

Alerts and Publications

DOJ Breathes New Life into Section 2 Criminal Enforcement

March 8, 2022

FTC Announces New 2022 HSR Reporting Thresholds and Renews Call to Congress for Additional Funding

January 25, 2022

Prompted by Sweeping Executive Order on Competition, New Leadership at US Antitrust Agencies to Launch Review of Merger Guidelines; Similar Initiatives in Europe and China May Signal Greater Convergence in Enforcement Across Jurisdictions

July 26, 2021

Unanimous Supreme Court Affirms Injunction Barring NCAA Rules that Limit Education-Related Compensation to Student Athletes

June 30, 2021

Supreme Court Holds That FTC Cannot Sue for Monetary Relief: AMG Capital Management v. FTC

April 26, 2021

European Commission Extends Reach Over Non-Reportable Transactions

April 6, 2021

Current Status of Electronic Signatures Law and Presumption of Authenticity in Japan: Can a Handwritten Signature or “Hanko” Be Omitted?

March 10, 2021

Senator Klobuchar Unveils Broad New Proposed Antitrust Legislation

February 8, 2021

FTC Adjusts New 2021 HSR Reporting Thresholds Downward

February 3, 2021

EU Commission Publishes Text of EU-China Comprehensive Agreement on Investment

January 27, 2021

Germany Strengthens Antitrust Enforcement Powers to Rein in Big Tech

January 19, 2021

The Distinction between “Regular” and “Non-Regular” Employees is Crucial to Managing a Japanese Workforce—We Must Go Back to World War II to Understand Its Origins

January 12, 2021

China Expands National Security Review of Foreign Investments

January 12, 2021

European Commission Plan to Reform Europe’s Digital Space - Part 2 - Draft Digital Services Act

December 23, 2020

European Commission Plan to Reform Europe’s Digital Space - Part 1 - Draft Digital Markets Act

December 21, 2020

Press Releases