John V. Jansonius
Practice Areas
Experience
- Discrimination & Harassment Claims
- Employee Whistleblower & Retaliation Claims
- Employment & Governmental Investigations
- Employment Policies, Procedures, & Handbooks
- Hiring, Performance Management, & Termination
- Labor & Employment Appellate
- Labor & Employment Litigation
- Labor Management & Traditional Labor Relations
- Non-Compete Issues
- Special Investigations
- Staffing, Independent Contractors, & Contingent Workers
- Unfair Competition & Trade Secrets
- Wage & Hour
- Workplace Ethics, Compliance, & Investigations
- Workplace Safety & Health
- Workplace Training
“John Jansonius provides expert representation to employers in labor relations matters as well as high-stakes employment litigation. 'He is universally regarded as a good lawyer and easy to work with,' sources stated. 'John brings deep expertise and knowledge of traditional labor work. He is among the best and can deal with difficult issues that require deep experience in labor practice. He is well-connected, practical, and capable of understanding deep theory, and he stays abreast of what is going on.' One interviewee added, 'He is very strong on all accounts.'”
— Chambers USA Guide, 2023
Biography
John V. Jansonius has over 40 years experience in labor and employment law. He focuses his practice on: contract and compensation negotiations and disputes with corporate officers and managers; defense of employment discrimination claims and wrongful discharge claims; collective bargaining, representation cases, and unfair labor practice claims under the National Labor Relations Act; denial of benefits claims under the Employee Retirement Income Security Act; advising on and conducting internal investigations in hand with employers, boards of directors, audit committees, and compensation committees; and advising on employment and labor aspects of business transactions. He has represented clients in numerous jury and non-jury trials in state and federal court and has presented oral arguments to the U.S. Supreme Court and the federal circuit courts of appeals.
John is rare among labor and employment lawyers in having experience in the board room, at the bargaining table, and in the courtroom. His experience, and his current practice, ranges from counseling boards of directors of publicly traded companies to serving as counsel to company negotiating committees in collective bargaining with labor unions. Rounding out Johnâs practice is regular involvement as defense counsel in employment litigation and counseling management on executive and employee relations matters and compliance with federal and state labor and employment law.
John provides additional value to clients by partnering with employers, boards of directors, and compensation committees to develop and implement tailored compliance and ethics programs that reduce risk and ensure compliance in todayâs increasingly regulatory climate. John also serves as a trusted adviser to these clients in the event that they find themselves conducting, or otherwise involved in, independent or internal investigations.
Few lawyers have been as long and steadily involved in the full array of labor and employment law as it has evolved over the past generation as John, and this gives him a unique ability to counsel and defend businesses in their legal relationships with executives, salaried and hourly paid employees, and labor unions.
Education
B.A., cum laude, Drake University
J.D., SMU Dedman School of Law
Bar Admissions
Texas
Minnesota
Oklahoma
Court Admissions
United States Supreme Court
United States Court of Appeals for the Fifth, Eighth, and Tenth Circuits
United States District Court for the Eastern, Northern, Southern, and Western Districts of Texas
All courts in Minnesota, Oklahoma, and Texas
Professional Certifications
Board Certified in Labor and Employment Law (TBLS)
John has served as lead counsel in countless employment litigation cases; counsel to management on executive compensation and employee relations aspects in a wide variety of business transactions; management counsel in collective bargaining, contract administration, and unfair labor practice defense in the labor relations context; and he routinely works with corporate counsel, executive management, and human resources to resolve specific employee relations issues and to develop programs and strategies to minimize risk.
Among Johnâs specific areas of expertise are:
- Defense of claims alleging unfair or discriminatory compensation practices
- Representation of management in union representation cases, unfair labor practice cases, and grievance arbitrations
- Counseling and representing corporations and other business entities in executive relations and the labor and employment aspects of mergers and acquisitions and other business transactions
- Arbitration and litigation defense of employment discrimination and wrongful discharge claims
- Chambers Global Guide, Ranked for Labor & Employment (USA), 2018-2023
- Chambers USA: Americaâs Leading Lawyers for Business, 1996-2024
- Ranked for Employment: Mainly Defendant – Texas, 1996-2006
- Ranked for Labor & Employment â Texas, 2007-2025
- The Best Lawyers in America (Woodward/White Inc.), 1997-2025
- Lawyer of the Year â Dallas/Fort Worth, Employment Law – Management, 2012, 2025
- Lawyer of the Year â Dallas/Fort Worth, Labor Law – Management, 2014
- Lawyer of the Year â Dallas/Fort Worth, Labor and Employment Law, 2010
- Employment and Labor Law – Management, 1997-2025
- Lawdragon 500 Leading U.S. Corporate Employment Lawyers, 2020-2024
- Top 100: Texas Super Lawyers, Super Lawyers by Thomson Reuters, 2010-2011, 2013-2014, 2016
- Top 100: Dallas/Fort Worth Super Lawyers, Super Lawyers by Thomson Reuters, 2007-2017
- Texas Super Lawyer, Super Lawyers by Thomson Reuters, 2003-2024
- Whoâs Who Legal by Lexology, Recommended for Labor & Employment, 2023-2024
- Whoâs Who Legal: Texas, Labor, Employment & Benefits, 2016, 2019
- “Best Lawyers in Dallas,” D Magazine, 2009, 2011-2015, 2017-2018
Publications
- “3 Dramatic Workplace Changes Amid A Global Disease Threat,” D Magazine (June 2020)
- “The Labor and Employment Horizonâ2019,” Jackson Walker Insights (January 2019)
- “Supreme Court Okays Class Action Waivers in Employee Arbitration Agreements,” The Texas Lawbook (May 2018)
Speaking Engagements
- âNational Labor Relations Board (NLRB) Update,â 32nd Annual Labor and Employment Law Conference (June 2025)
- “The Evolving World of Union Organizing,” TexasBarCLE’s 31st Annual Advanced Employment Law Course (January 2023)
- “Labor Law Update,” 32nd Annual Labor and Employment Law Institute of the Labor & Employment Law Section of the State Bar of Texas (August 2022)
- “NLRB Update,” 31st Annual Labor and Employment Law Institute of the Labor & Employment Law Section of the State Bar of Texas (August 2021)
- “Recent âDevelopments âUnder the âNational âLabor âRelations âAct,” State Bar of Texas 29th Annual Advanced Employment Law Course (January 2021)
- “Wage-Hour 2020: U.S. Department of Labor and Private Enforcement of the FLSA,” UT Law CLE’s 27th Annual Labor and Employment Law Conference (May 2020)
- “Class Action Employment Litigation: What’s Left and What’s New,” UT Law CLE’s 26th Annual Labor and Employment Law Conference (May 2019)
- Co-Presenter, “2018 Employment and Labor Law Update: The Year of #MeToo,” Labor & Employment Law Symposium (October 2018)
- “Recent Updates to the Anti-SLAPP Law,” Dallas Bar Association Media Relations Committee (November 2018)
- “Flip-Flop at the Board: Whatâs Gone, Whatâs New, Whatâs Coming Under the NLRA,” UT Law CLE’s 25th Annual Labor and Employment Law Conference (May 2018)
- “Recent Developments and A Look Ahead Under the National Labor Relations Act,” UT Law CLE’s 24th Annual Labor and Employment Law Conference (June 2017)
- âKeeping Up With The Times Or Re-Writing History: The Pace and Scope of Change Under the National Labor Relations Act,â New Mexico Bar Association (October 2016)
- “Compensation Litigation and Regulation in Trucking: The Battle Between the States and the States, the Federal Government, and the Industry,” 29th Annual Conference of the North American Transportation Employee Relations Association (2016)
- State Bar of Texas
- Board of Directors, 2008-2011, 2014-2017
- Executive Committee, 2016-2017
- Named Outstanding Director, 2017
- Texas Access to Justice Commission, Commissioner, 2014-2017
- Legislative Policy Committee, Chair, 2015-Present
- Grievance Committee for District 6, Panel Chair, 2013-2014
- Client Security Fund, Chair, 2010-2011
- Labor & Employment Section, Chair, 2004-2005
- Texas Bar College, Since 1990
- Board of Directors, 2008-2011, 2014-2017
- Texas Bar Foundation, Fellow
- Dallas Bar Association
- Judicial Committee, Co-Chair, 2014
- New Laws/Legislation Committee, Chair, 1995
- Dallas Bar Foundation, Fellow
- American Bar Association
- American Bar Foundation, Fellow
- American Employment Law Council (AELC), 2011-Present
- College of Labor and Employment Lawyers, Fellow, 2006-Present
- Employment Discrimination Law treatise, Editorial Board, 2013-Present
- General Counsel Forum â DFW Chapter, Board of Directors, 2001-2012
- Industrial Relations Research Association â North Texas Chapter, President, 1987
- North American Transportation Employee Relations Association, President, 2010
- United States Court of Appeals for the Fifth Circuit Pattern Jury Charges for Employment Litigation, Advisory Committee, 2005-2008
- Minnesota State Bar Association
- Oklahoma Bar Association
June 5, 2025
Spotlight
Chambers and Partners Releases 2025 USA Guide Featuring 79 Jackson Walker Attorneys and 28 Ranked Departments
Jackson Walker is pleased to announce that Chambers and Partners has selected 79 attorneys and 28 departments for inclusion in the 2025 edition of the Global and USA guides. Attorneys were ranked across 29 departments, with 4 attorneys listed among multiple areas, 9 ranked nationwide in their respective areas, and 12 recognized for the first time.
May 27, 2025
Speaking Engagements
John Jansonius to Present at UT School of Lawâs Labor and Employment Law Conference
Jackson Walker partner John V. Jansonius will be a speaker at The University of Texas School of Lawâs 32nd Annual Labor and Employment Law Conference.
September 23, 2024
Attorney News
Jackson Walker Congratulates 12 Attorneys Named to âLawdragon 500 Corporate Employment Lawyersâ List
Jackson Walker announces the selection of 12 attorneys to Lawdragon‘s lists of the 500 leading practitioners in corporate employment law.
September 17, 2024
Attorney News
Jackson Walker Congratulates Its âTexas Super Lawyersâ of 2024
Jackson Walker proudly announces the selection of 71 attorneys to Thomson Reutersâ 2024 âTexas Super Lawyersâ list.
Each year, less than 5% of attorneys in Texas are named to the list. Selection is based off of peer nominations that are then reviewed by a research team. Each nominee is evaluated on his or her professional accomplishments, peer recognition, and community involvement.
August 15, 2024
Attorney News
‘The Best Lawyers in America’ Features 306 Jackson Walker Attorneys in 2025 Edition, Including 9 “Lawyers of the Year” and 75 “Ones to Watch”
The Best Lawyers in America has recognized 306 Jackson Walker attorneys across 81 specialty practice areas in its 2025 edition, including 9 Lawyers of the Year and 75 Ones to Watch. In this yearâs guide, Jackson Walker saw the largest number of attorneys in the areas of Commercial Litigation (75 attorneys) and Real Estate Law (55 attorneys) and the addition of 27 attorneys as Best Lawyers.
June 6, 2024
Spotlight
Chambers and Partners Releases 2024 USA Guide Featuring 67 Jackson Walker Attorneys and 23 Ranked Departments
Jackson Walker is pleased to announce that Chambers and Partners has selected 67 attorneys and 23 departments for inclusion in the 2024 edition of the Global and USA guides. Attorneys were ranked across 27 departments, with 3 attorneys listed among multiple areas, 8 ranked nationwide in their respective areas, and 15 recognized for the first time.
April 17, 2024
Insights
Student-Athletes as Employees Spells Legal Stressors for Schools | Bloomberg Tax
The union-aspiring Dartmouth College menâs basketball team has put the full court press on their âemployer,â labor agencies, and courts of law â with far-reaching legal and financial implications.
October 18, 2023
Attorney News
Jackson Walker Congratulates 13 Attorneys Named to 2024 Lawdragon 500 Lists
Jackson Walker announces the selection of 13 attorneys to Lawdragon‘s lists of the 500 leading practitioners in corporate employment law.
September 19, 2023
Attorney News
Jackson Walker Congratulates Its “Texas Super Lawyers” of 2023
Each year, less than 5% of attorneys in Texas are named to the list. Selection is based off of peer nominations that are then reviewed by a research team. Each nominee is evaluated on his or her professional accomplishments, peer recognition, and community involvement.
Practice Experience
John has served as lead counsel in countless employment litigation cases; counsel to management on executive compensation and employee relations aspects in a wide variety of business transactions; management counsel in collective bargaining, contract administration, and unfair labor practice defense in the labor relations context; and he routinely works with corporate counsel, executive management, and human resources to resolve specific employee relations issues and to develop programs and strategies to minimize risk.
Among Johnâs specific areas of expertise are:
- Defense of claims alleging unfair or discriminatory compensation practices
- Representation of management in union representation cases, unfair labor practice cases, and grievance arbitrations
- Counseling and representing corporations and other business entities in executive relations and the labor and employment aspects of mergers and acquisitions and other business transactions
- Arbitration and litigation defense of employment discrimination and wrongful discharge claims
Recognition & Accolades
- Chambers Global Guide, Ranked for Labor & Employment (USA), 2018-2023
- Chambers USA: Americaâs Leading Lawyers for Business, 1996-2024
- Ranked for Employment: Mainly Defendant – Texas, 1996-2006
- Ranked for Labor & Employment â Texas, 2007-2025
- The Best Lawyers in America (Woodward/White Inc.), 1997-2025
- Lawyer of the Year â Dallas/Fort Worth, Employment Law – Management, 2012, 2025
- Lawyer of the Year â Dallas/Fort Worth, Labor Law – Management, 2014
- Lawyer of the Year â Dallas/Fort Worth, Labor and Employment Law, 2010
- Employment and Labor Law – Management, 1997-2025
- Lawdragon 500 Leading U.S. Corporate Employment Lawyers, 2020-2024
- Top 100: Texas Super Lawyers, Super Lawyers by Thomson Reuters, 2010-2011, 2013-2014, 2016
- Top 100: Dallas/Fort Worth Super Lawyers, Super Lawyers by Thomson Reuters, 2007-2017
- Texas Super Lawyer, Super Lawyers by Thomson Reuters, 2003-2024
- Whoâs Who Legal by Lexology, Recommended for Labor & Employment, 2023-2024
- Whoâs Who Legal: Texas, Labor, Employment & Benefits, 2016, 2019
- “Best Lawyers in Dallas,” D Magazine, 2009, 2011-2015, 2017-2018
Publications & Speeches
Publications
- “3 Dramatic Workplace Changes Amid A Global Disease Threat,” D Magazine (June 2020)
- “The Labor and Employment Horizonâ2019,” Jackson Walker Insights (January 2019)
- “Supreme Court Okays Class Action Waivers in Employee Arbitration Agreements,” The Texas Lawbook (May 2018)
Speaking Engagements
- âNational Labor Relations Board (NLRB) Update,â 32nd Annual Labor and Employment Law Conference (June 2025)
- “The Evolving World of Union Organizing,” TexasBarCLE’s 31st Annual Advanced Employment Law Course (January 2023)
- “Labor Law Update,” 32nd Annual Labor and Employment Law Institute of the Labor & Employment Law Section of the State Bar of Texas (August 2022)
- “NLRB Update,” 31st Annual Labor and Employment Law Institute of the Labor & Employment Law Section of the State Bar of Texas (August 2021)
- “Recent âDevelopments âUnder the âNational âLabor âRelations âAct,” State Bar of Texas 29th Annual Advanced Employment Law Course (January 2021)
- “Wage-Hour 2020: U.S. Department of Labor and Private Enforcement of the FLSA,” UT Law CLE’s 27th Annual Labor and Employment Law Conference (May 2020)
- “Class Action Employment Litigation: What’s Left and What’s New,” UT Law CLE’s 26th Annual Labor and Employment Law Conference (May 2019)
- Co-Presenter, “2018 Employment and Labor Law Update: The Year of #MeToo,” Labor & Employment Law Symposium (October 2018)
- “Recent Updates to the Anti-SLAPP Law,” Dallas Bar Association Media Relations Committee (November 2018)
- “Flip-Flop at the Board: Whatâs Gone, Whatâs New, Whatâs Coming Under the NLRA,” UT Law CLE’s 25th Annual Labor and Employment Law Conference (May 2018)
- “Recent Developments and A Look Ahead Under the National Labor Relations Act,” UT Law CLE’s 24th Annual Labor and Employment Law Conference (June 2017)
- âKeeping Up With The Times Or Re-Writing History: The Pace and Scope of Change Under the National Labor Relations Act,â New Mexico Bar Association (October 2016)
- “Compensation Litigation and Regulation in Trucking: The Battle Between the States and the States, the Federal Government, and the Industry,” 29th Annual Conference of the North American Transportation Employee Relations Association (2016)
Community Involvement
- State Bar of Texas
- Board of Directors, 2008-2011, 2014-2017
- Executive Committee, 2016-2017
- Named Outstanding Director, 2017
- Texas Access to Justice Commission, Commissioner, 2014-2017
- Legislative Policy Committee, Chair, 2015-Present
- Grievance Committee for District 6, Panel Chair, 2013-2014
- Client Security Fund, Chair, 2010-2011
- Labor & Employment Section, Chair, 2004-2005
- Texas Bar College, Since 1990
- Board of Directors, 2008-2011, 2014-2017
- Texas Bar Foundation, Fellow
- Dallas Bar Association
- Judicial Committee, Co-Chair, 2014
- New Laws/Legislation Committee, Chair, 1995
- Dallas Bar Foundation, Fellow
- American Bar Association
- American Bar Foundation, Fellow
- American Employment Law Council (AELC), 2011-Present
- College of Labor and Employment Lawyers, Fellow, 2006-Present
- Employment Discrimination Law treatise, Editorial Board, 2013-Present
- General Counsel Forum â DFW Chapter, Board of Directors, 2001-2012
- Industrial Relations Research Association â North Texas Chapter, President, 1987
- North American Transportation Employee Relations Association, President, 2010
- United States Court of Appeals for the Fifth Circuit Pattern Jury Charges for Employment Litigation, Advisory Committee, 2005-2008
- Minnesota State Bar Association
- Oklahoma Bar Association
Practice Areas
Experience
- Discrimination & Harassment Claims
- Employee Whistleblower & Retaliation Claims
- Employment & Governmental Investigations
- Employment Policies, Procedures, & Handbooks
- Hiring, Performance Management, & Termination
- Labor & Employment Appellate
- Labor & Employment Litigation
- Labor Management & Traditional Labor Relations
- Non-Compete Issues
- Special Investigations
- Staffing, Independent Contractors, & Contingent Workers
- Unfair Competition & Trade Secrets
- Wage & Hour
- Workplace Ethics, Compliance, & Investigations
- Workplace Safety & Health
- Workplace Training