J. Horton, Hunton Andrews Kurth LLP Photo

J. Marshall Horton

Senior Attorney


Marshall is a Board Certified Labor and Employment attorney that focuses his practice on representing employers in litigation involving Title VII, Age Discrimination in Employment Act (ADEA), Americans with Disabilities Act (ADA), Family & Medical Leave Act (FMLA), Fair Labor Standards Act (FLSA) (single plaintiff and collective action), National Labor Relations Act (NLRA), Worker Adjustment Retraining and Notification Act (WARN), Operational Safety and Health Administration (OSHA), Sarbanes Oxley and related retaliation issues, and restrictive covenants.

Marshall’s practice includes involvement in federal and state administrative actions and investigations with agencies such as the Equal Employment Opportunity Commission (EEOC), the Department of Homeland Security (DHS), the Texas Workforce Commission (TWC), the Texas Workers’ Compensation Commission (TWCC), the US Department of Labor and various state’s Departments of Labor, in addition to both federal and state court actions. His involvement includes taking and defending depositions, drafting dispositive motions, pleadings, discovery and resolving cases through negotiation, mediation, arbitration, and trial. He also counsels employers on hiring and firing decisions, wage and hour issues, family and medical leave issues, collective bargaining issues, employment authorization issues (e.g., I-9 audits and compliance), employment policies and handbooks, fair credit reporting, restrictive covenants and acquisitional aspects of labor and employment law, in addition to providing employers with management and employee-level training regarding unfair employment practices.


  • Represented and defended various employers in the energy industry in multiple FLSA collective action lawsuits
  • Represented and successfully defended through jury trial a manufacturer of drilling equipment against claims related to the overtime requirements of the FLSA
  • Represented and obtained precedent-setting summary judgment on behalf of oil rig operators with respect to allegations of WARN Act violations
  • Represented refinery in prosecuting theft of trade secret and breach of restrictive covenant claims
  • Represented and defended a nationwide hotel chain against varied, and multiple, employment discrimination claims brought by employees
  • Represented and defended a manufacturer of radiation detection devices regarding theft of trade secret and breach of restrictive covenant claims
  • Coordinated and handled interactions with the Department of Homeland Security regarding the I-9 audit of a manufacturer of well supplies
  • Represented and defended a privately held marine shipping company against claims related to the minimum wage and overtime requirements of the FLSA
  • Represented and defended a leading provider of remote heart monitoring services against claims related to discrimination and retaliation under the FMLA
  • Coordinated and handled interactions with OSHA, and provided legal guidance with respect to investigating the cause of a catastrophe, and managing the administrative and judicial proceedings that followed



  • Certified – Texas Board of Legal Specialization, Board Certified, Labor and Employment Law 
  • Houston Bar Association, Labor and Employment Section


Events & Speaking Engagements

  • January 5, 2023
    Layoffs – What to Expect and How to Do Them, ACC Houston Half Day CLE Seminar: The Future of Work
  • April 29, 2021
    Hot Employment Law Issues in 2021, ACC Houston Half Day CLE Seminar: Employment Law 2021
  • April 18, 2017
    Rules of Employment Webinar Series: Protecting Your Company’s Secret Sauce: The Texas Trade Secrets Act, the Federal Defend Trade Secrets Act, and Other Trade Secret Protections
  • Event
    Houston Matters Public Radio Show – Guest Speaker: New Overtime Rules
  • April 28, 2016
    CLE: When It’s Time to Go: Reductions-in-Force, Employee Separations, and the WARN Act
  • March 15, 2013
    Hiring & Firing – Best Practices for Early Stage Companies, SURGE Accelerator, Houston, Texas

Blog Posts



JD, University of Houston Law Center, 2003

BBA, Management, Baylor University, 2000




US District Court, Northern District of Texas

US District Court, Southern District of Texas

US District Court, Eastern District of Texas

US District Court, Western District of Texas

US District Court, Eastern District of Michigan

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