Mark A. Addington focuses his practice primarily on employment litigation, including contractual disputes, restrictive covenants (such as non-competition, non-solicitation, or confidential information restrictions), defense of wage and hour, harassment, retaliatory discharge, disability, age, religion, race, and sex discrimination. He has also responded to charges of discrimination or governmental audits conducted by federal, state and local administrative agencies. He counsels employers in problem prevention, employee discipline and termination, and employment discrimination and harassment.

Mark also assists employers in handling internal investigations. Prior to entering law school, Mark worked extensively in operations, training, and human resources for large hospitality organizations. Mark has experience in policy development, compliance reviews, and management and employee training.

Mark conducts employment law seminars and training programs for his clients and the community. He is a frequent speaker and lecturer at statewide conferences and seminars such as HR Florida and the Florida Restaurant and Lodging Show. He has given presentations on various topics such as workplace technology issues, military leave, disciplinary documentation, job interviews, the Family Medical Leave Act, and wage and hour law compliance. He is a frequent guest columnist for the Jacksonville Business Journal as well as other publications.

In addition to his legal practice, Mark is certified by the Florida Supreme Court as a Circuit Civil Mediator and Qualified Arbitrator. Mark assists clients in resolving all types of disputes, primarily matters concerning business disputes, restrictive covenants, employment discrimination, employment disputes, labor-management disputes, private employment contracts, wage claims, class actions, and tort claims.

Bar Admissions

  • All Florida State Courts
  • U.S. Federal Court for the Northern District of Florida
  • U.S. Federal Court for the Middle District of Florida
  • U.S. Federal Court for the Southern District of Florida
  • Eleventh Circuit Federal Court of Appeals


  • Florida Supreme Court Certified:
    • Qualified Arbitrator
    • Circuit Civil Mediator

Teaching Experience

  • University of North Florida – School of Business, Faculty (2019-present)
  • Webster University – School of Business, Faculty (2014 – present)
  • Brenau University – School of Business, Faculty (2018-present)
  • University of Phoenix – School of Business, Faculty (2009 – 2020)


University of Florida – Juris Doctor

  • Willem C. Vis International Commercial Arbitration Moot Team
  • Awarded Outstanding Moot Participant
  • International Moot Court Board

University of South Florida – Bachelor of Arts, Business Economics

  • Graduated Magna Cum Laude
  • USF Honors Program
  • Phi Kappa Phi – Honor Society
  • Beta Gamma Sigma – Business Honor Society
  • Omicron Delta Epsilon – International Economics Honor Society
  • Golden Key – International Honor Society
  • FTC Internship – Washington D.C.

Legal and Professional Organizations

American Bar Association Member:

  • Labor & Employment Law Section
  • Alternative Dispute Resolution Section
  • ABA Advisory Panel

Florida Bar Association Member:

  • Labor & Employment Law Section
  • Alternative Dispute Resolution Section

Jacksonville Bar Association Member:

  • Labor & Employment Law Section
  • Alternative Dispute Resolution Section

Clay County Bar Association Member

Small Business Resource Network:

  • Co-Chair – Legal Committee 2010-2011
  • Co-Chair – Legal Committee 2015
  • Chair – Legal Committee 2019
  • SBRN 25th Anniversary Committee 2017
  • Steering Committee – 2017-present
  • Mentor – 2017-present

Society of Human Resource Management:

  • SHRM National
  • SHRM Jacksonville – Legislative Committee

Florida Academy of Professional Mediators