Keith D. Greenberg is an arbitrator and mediator of private, public, and federal sector labor and employment disputes and employee benefits disputes. He is a member of the National Academy of Arbitrators (NAA) and served a three-year term on its Board of Governors. He serves on a number of labor arbitration panels and rosters, including those maintained by the American Arbitration Association (AAA), the Federal Mediation and Conciliation Service (FMCS), and the National Mediation Board. Mr. Greenberg also serves on permanent labor arbitration panels in the private, public, and federal sectors, and regularly adjudicates and mediates disputes involving EEO claims, unfair labor practice charges, and bargaining impasses. He has presided as sole arbitrator and as the neutral chair of tripartite and neutral panels. He regularly serves as a neutral overseeing representation elections and card checks. Mr. Greenberg is listed on employment arbitration panels maintained and administered by the AAA and the CPR Institute, among other rosters, as well as the AAA’s ERISA and MPPAA arbitration panels. He serves as the impartial Labor Relations Administrator for the Washington Suburban Sanitary Commission; for the city of Richmond, Virginia; and for Loudoun County, Virginia. Mr. Greenberg also serves as the neutral Chairman of the Grievance Committee for the International Monetary Fund.

Mr. Greenberg is an experienced mediator, serving as a member of the AAA’s roster of employment mediators and its panel of labor mediators. He also serves on the rosters of employment mediators for the United States Office of Congressional Workplace Rights; the Cornell University Roster of Dispute Resolution Neutrals; the CPR Institute; and the American Health Lawyers Association, among others.

Mr. Greenberg has experience with videoconference arbitration and mediation proceedings and has served as a trainer for video arbitration and mediation programs sponsored by, among others, the NAA, the FMCS, the Labor and Employment Relations Association (LERA), the AAA, and the American Bar Association (ABA) Section of Labor and Employment Law. He served as the Technology Coordinator for the NAA and is co-author of a chapter in Labor and Employment Arbitration (Bornstein, Gosline, Greenbaum, and Mayberry, Eds.) (Matthew Bender) on conducting video hearings.

Mr. Greenberg serves as the Neutral Vice-Chair of the Annual Section Conference Planning Committee of the ABA’s Section of Labor and Employment Law and was elected a Fellow of the American Bar Foundation. Among other professional activities, Mr. Greenberg currently serves as President of the Society of Federal Labor and Employee Relations Professionals (SFLERP) and as a member of the NAA’s A.I. Study Group. He previously served as President of Maryland LERA from 2021 to 2022; and as Co-Chair of the Steering Committee of the D.C. Bar’s Labor and Employment Law Community from 2016 to 2018. He is an active member of the Cornell ILR Alumni Association and the National Association of Railroad Referees. Mr. Greenberg is a member of the Cuban American Bar Association and is fluent in Spanish.

Mr. Greenberg has spoken and presented on numerous topics, including the use of technology in ADR, including artificial intelligence; arbitrator ethics; issues arising in federal sector labor arbitration; current developments in labor and employment arbitration; advanced topics in labor and employment law; and advocate preparation for labor arbitration hearings. He has contributed to a number of publications by the ABA’s Section of Labor and Employment Law, and writes frequently on labor and employment and alternative dispute resolution topics. Mr. Greenberg previously co-taught a seminar on workplace ADR at the George Washington University Law School, and has served as a guest lecturer in courses on labor relations.

Mr. Greenberg spent several years in practice as an attorney in New York City in the labor and employment practice group of Duane Morris LLP prior to establishing his practice as a full-time neutral in the Washington, D.C. area. He is a graduate of the Cornell University School of Industrial and Labor Relations and of the University of Michigan Law School.

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Professional Affiliations

Member, National Academy of Arbitrators (A.I. Study Group; Board of Governors, 2021-2024)

President, Society of Federal Labor and Employee Relations Professionals (SFLERP)

Neutral Vice-Chair, Annual Section Conference Planning Committee, American Bar Association Section of Labor and Employment Law

Fellow, American Bar Foundation

D.C. Bar Labor and Employment Law Community (Co-Chair, 2016-2018)

Employment Committee, ABA Section of Dispute Resolution (Co-Chair, 2016-2020)

National Association of Railroad Referees

Labor and Employment Relations Association (LERA) (Maryland and Virginia Chapters) (Past President, Maryland Chapter)

Cornell ILR Alumni Association

Cuban American Bar Association

Panels and Rosters

National Rosters

Roster of Arbitrators, Federal Mediation and Conciliation Service

Labor Arbitration and Labor Mediation Panels, American Arbitration Association

Employment Arbitration and Employment Mediation Rosters, American Arbitration Association

MPPAA/ERISA Arbitration Panel, American Arbitration Association

Roster of Labor Arbitrators, National Mediation Board

Roster of Labor Arbitrators, The Labor Relations Connection

CPR Panels of Distinguished Neutrals (Employment Disputes, Mass Claims Employment, and at-Large ADR Panels)

Roster of Mediators,
United States Office of Congressional Workplace Rights

Roster of Neutrals, Scheinman Institute on Conflict Resolution, Cornell University ILR School

State and Local Rosters

Rosters of Labor Arbitrators, Mediators and Hearing Examiners, District of Columbia Public Employee Relations Board

Roster of Labor Arbitrators, Pennsylvania Bureau of Mediation

Grievance Arbitration Panel, New Jersey Public Employment Relations Commission

Voluntary Grievance Arbitration Panels, New York State Public Employment Relations Board

Roster of Labor Arbitrators, New Jersey State Board of Mediation

Permanent Arbitration Panels & Impartial Labor Relations Administrator Appointments

Impartial Labor Relations Administrator, Washington Suburban Sanitary Commission (WSSC Water)

Impartial Labor Relations Administrator, City of Richmond, Virginia

Impartial Labor Relations Administrator, Loudoun County, Virginia

Neutral Chairman, Grievance Committee, International Monetary Fund

Neutral Member, Teamsters/TForce Freight Grievance Committee (Eastern, Central, and Southern Regions)

United Parcel Service – International Brotherhood of Teamsters National Arbitration Panel (Eastern Region)

Neutral Member, UPS – IBT Parcel Grievance Committees (New England Area; Central and Southern Regions)

United Airlines – Association of Flight Attendants-CWA System Board Arbitration Panel

Alaska Airlines – Aircraft Mechanics Fraternal Association Arbitration Panel

Public Law Board No. 7230 (Amtrak and IAMAW)

Neutral Member, Anheuser-Busch – IBT Brewery Division Multi-Plant Grievance Committee

Maryland Transit Administration – Amalgamated Transit Union Local 1300 Arbitration Panel

National Archives and Records Administration – American Federation of Government Employees Council 260, Local 2578 Arbitration Panel

Major League Baseball – Major League Baseball Players Association Salary Arbitration Panel

Pennsylvania State System of Higher Education – Association of Pennsylvania State College & University Faculties Arbitration Panel

Department of Defense Education Activity – Overseas Federation of Teachers Arbitration Panel

United States Postal Service – National Rural Letter Carriers Association Regional Arbitration Panels

Transdev/Fairfax Connector – Amalgamated Transit Union Local 689 Arbitration Panel

BHE Eastern Gas Transmission – Storage and Utility Workers Union of America Local 69 Arbitration Panel

Prince George's County Public Schools – ACE-AFSCME, Local 2250 Arbitration Panel

United States Department of Energy – National Treasury Employees Union Arbitration Panel

Washington Metropolitan Area Transit Authority – Amalgamated Transit Union Local 689 Arbitration Panel

United States Patent & Trademark Office – National Treasury Employees Union Chapter 243 Arbitration Panel

Hotel Association of Washington, D.C. – UNITE HERE Local 25 Arbitration Panel

Federal Deposit Insurance Corporation – National Treasury Employees Union Chapter 242 Arbitration Panel

Selected Presentations and Trainings

Panelist, “A.I. in Arbitration: A Cautious Approach,” 78th Annual Meeting, National Academy of Arbitrators, May 1, 2025

Panelist, “Technology and A.I.: The Impact on Dispute Resolution in the Workplace,” Maine LERA, March 10, 2025

Faculty, “How the Arbitrators Decide What the Parties Meant: Effective Approaches to Contract Interpretation,” American Arbitration Association Webinar, October 21, 2024

Panelist, “Public Sector Law Update,” The Virginia Bar Association, 54th Annual Conference on Labor and Employment Law, September 21, 2024

Panelist, “Artificial Intelligence in the Workplace,” Virginia LERA Annual Conference, September 10, 2024

Moderator, “Generative A.I. and Labor Arbitration – As the Case Develops, at the Hearing, and on the Arbitrator’s Desk,” 77th Annual Meeting, National Academy of Arbitrators, May 8, 2024

Program Faculty, “Federal Sector: Arbitration – Law and Practice,” 43rd FMCS Arbitration Symposium, October 12, 2023

Panelist, “Paths to Becoming a Labor Arbitrator,” Cornell University ILR School, Scheinman Institute on Conflict Resolution Webinar, June 5, 2023

Panelist, “Advice from the Arbitrators,” Virginia LERA Webinar, March 9, 2023

Presenter, “Past Practice in Labor Arbitration,” NYC Office of Collective Bargaining, February 7, 2023

Program Faculty, “Understanding and Defending ‘Past Practice’ Issues in Labor Arbitration,” American Arbitration Association Webinar, November 16, 2022

Panelist, “Recent Developments Under the Federal Arbitration Act,” 16th Annual Labor and Employment Law Conference, ABA Section of Labor and Employment Law (LEL Section), November 10, 2022

Presenter, Video Arbitration Hearings: the Basics, and Lessons Learned,” SFLERP Webinar, October 27, 2022

Moderator, “Collective Bargaining in Virginia Counties & Cities,” Virginia LERA Conference, September 22, 2022

Moderator, “Solving the Puzzle of ‘Just Cause’ in Arbitration,” American Arbitration Association Webinar, May 18, 2022

Presenter, “Contract Interpretation in Labor Arbitration,” NYC Office of Collective Bargaining, January 24, 2022

Moderator, “The Future of Virtual Hearings,” Joint Webinar by the National Academy of Arbitrators, ABA LEL Section, and Association of Labor Relations Agencies, August 19, 2021

Panelist, “Labor-Management Relationships,” Virginia LERA Webinar, May 19, 2021

Program Faculty, “Federal Sector: Arbitration – Law and Practice,” 41st FMCS Arbitration Symposium, May 6, 2021

Panelist, “Current Developments in Labor and Employment Arbitration,” ADR in Labor & Employment Law Committee Mid-Winter Meeting, ABA LEL Section, February 11, 2021

Panelist, “Virtual Labor Arbitration Hearings,” American Arbitration Association Webinar, August 21, 2020

Featured Presenter, “Witnesses via Videoconference,” National Academy of Arbitrators Webinar, July 13, 2020

Panelist, “Virtual ADR from A to Z,” LERA Webinar, June 2, 2020

Panelist, “Using Videoconferencing in Labor and Employment Arbitration and Mediation,” Joint Webinar by the National Academy of Arbitrators and ABA LEL Section, May 7, 2020

Panelist, “Videoconferencing for Arbitrators,” Joint Webinar by the National Academy of Arbitrators and the Federal Mediation and Conciliation Service, April 2, 2020

Panelist, “Problem Witnesses, Problem Advocates, Problem Arbitrators,” Successful Labor Arbitration Techniques 2019, American Arbitration Association, November 15, 2019

Panelist, “How the Arbitrators Rule,” 40th FMCS Arbitration Symposium, May 10, 2019

Moderator, “FLSA Exemptions after Encino Motorcars,” ABA LEL Section CLE Webinar, April 10, 2019

Moderator, “A Practical Guide to Arbitration,” ABA LEL Section CLE Webinar, July 2018

Speaker, “Preparing for Labor Arbitration in the Federal Sector, with a Focus on the Hearing and Beyond,” SFLERP 45th Annual Symposium, May 17, 2018

Speaker, “Ethical Obligations Regarding Social Media: The Next Legal Frontier,” ADR in Labor & Employment Law Committee Mid-Winter Meeting, ABA LEL Section, February 11, 2018

Speaker, “Preparing for Labor Arbitration in the Federal Sector,” SFLERP 44th Annual Symposium, May 18, 2017

Moderator, “Online Dispute Resolution in Labor and Employment: No Longer a Novelty – Ever the Norm?,” National Symposium on Technology in Labor and Employment Law, ABA LEL Section, April 2017

Speaker, “Traditional Labor Law Issues Impacting Employment Practitioners,” Fairfax Bar Association Employment Law Section, November 2, 2016

Panelist, “Preparing for Your First (or Hundredth) Labor Arbitration,” District of Columbia Bar Labor and Employment Law Section, September 29, 2016

Guest Lecturer, Labor Relations (HRMN 362), University of Maryland University College, May 4, 2016

Speaker, “Attorney Fees in Federal Sector Arbitration,” SFLERP 43rd Annual Symposium, April 29, 2016

Moderator, “Beyond the Basics: Advanced Issues in FMLA Law,” ABA LEL Section CLE Webinar, February 24, 2016

Speaker, “ADR Professionals and Social Media – Considerations Regarding Disclosure,” Teleseminar, Association for Conflict Resolution – Workplace Section, January 23, 2015

Speaker, “The Intersection of Arbitrator Disclosure and Social Media,” LERA – Maryland Chapter, October 22, 2014

Moderator, “Bargaining Without Budgets,” Federal Sector Labor and Employment Law Committee Mid-Winter Meeting, ABA LEL Section, Feb. 11, 2014

Co-Instructor, Labor & Employment Arbitration & Mediation, The George Washington University Law School, Fall 2013

Presenter, “Preparing for a Hearing,” D.C. Government Labor-Management Relations Conference, September 30, 2013

Selected Publications

Contributing Editor, The Developing Labor Law, Bloomberg BNA and Committee on Development of the Law Under the National Labor Relations Act, ABA Section of Labor and Employment Law (7th Edition; 2013 – 2019 Supplements to 6th and 7th Editions)

Co-author, Conducting Video Hearings, in Labor and Employment Arbitration (Bornstein, Gosline, Greenbaum, and Mayberry, Eds.) (Matthew Bender)

Contributor, The Fair Labor Standards Act, Bloomberg BNA and Federal Labor Standards Legislation Committee, ABA Section of Labor and Employment Law (2014 Supplement)

Contributor, The Family and Medical Leave Act, Bloomberg BNA and Federal Labor Standards Legislation Committee, ABA Section of Labor and Employment Law (2014 Supplement)

Contributing Author, FMLA Midwinter Meeting Report, ABA Section of Labor and Employment Law, Federal Labor Standards Legislation Committee, Subcommittee on the Family and Medical Leave Act (2012 – 2019, 2021)

Contributing Author, FLSA Midwinter Meeting Report, ABA Section of Labor and Employment Law, Federal Labor Standards Legislation Committee, Subcommittee on the Fair Labor Standards Act (2013 – 2018, 2021)

Author, Ethical Approaches to Dealing with Difficult People, Labor and Employment Law Newsletter, ABA Section of Labor and Employment Law, Winter 2019 (Volume 47, No. 2)

Author, Clash of the Generations—Panel Discusses Managing Millennials in the Workforce, Labor and Employment Law Newsletter, ABA Section of Labor and Employment Law, Winter 2017 (Volume 45, No. 2)

Author, NLRB Outlines New Arbitration Deferral Standards, Labor and Employment Law Newsletter, ABA Section of Labor and Employment Law, Summer 2015 (Volume 43, No. 4)

Author, Battle Over Definitions Marks 2013–14 Court Term, Labor and Employment Law Newsletter, ABA Section of Labor and Employment Law, Winter 2015 (Volume 43, No. 2)

Co-author, The Young Lawyer’s Guide to Preparing for Mediation, New Issues Regarding Neutral Disclosure and the Use of Technology in ADR, and ADR Rule Changes, ADR Roundtable, 2014 ABA Annual Meeting

Co-author, Navigating the Murky Waters of Employment Waivers and Releases, New York State Bar Association Journal, February 2010

Keith D. Greenberg, Esq.

Labor and Employment Arbitrator and Mediator

Member, National Academy of Arbitrators