Jackson Walker LLP

John V Jansonius

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Practice Areas

John V. Jansonius labor and employment law practice focuses 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.

Professional Memberships

Court Admissions:

United States Supreme Court

United States Court of Appeals for the Fifth, Eighth, and Tenth Circuits

United States District Court for the Northern, Southern, Eastern, and Western Districts of Texas

All courts in Minnesota, Oklahoma, and Texas

John is Board Certified in Labor and Employment Law.


“The Labor and Employment Horizon—2019,” Jackson Walker e-Alert (January 23, 2019)

“Supreme Court Okays Class Action Waivers in Employee Arbitration Agreements,” Texas Lawbook (May 2018)


J.D. Southern Methodist University Dedman School of Law; B.A., Drake University.