Glen D. Mangum

Glen D. Mangum is a highly respected attorney with a career devoted to representing employees in workplace disputes. Since beginning his private practice in 1982, he has consistently advocated for clients facing issues like discrimination, retaliation, and unfair treatment in both the public and private sectors.

Glen began his academic journey at the University of Texas at Austin, where he earned a Bachelor’s Degree in Sociology in 1974. After gaining hands-on experience as a paralegal, he went on to attend St. Mary’s University School of Law in San Antonio. There, he received his Doctor of Jurisprudence Degree in 1979, building a solid foundation for his legal career.

Early in his career, Glen served as a law clerk to the Honorable Robert B. O’Connor, U.S. Magistrate Judge, where he gained hands-on experience with the federal court system. This role refined his litigation skills and equipped him to handle the complex, high-stakes cases he now takes on for his clients.

Glen went on to work with seasoned employment lawyers, building his knowledge in labor and employment law. These roles gave him direct insight into employee rights, workplace regulations, and legal remedies available to those treated unfairly by their employers.

For decades, Glenhas represented clients before both state and federal courts, as well as before agencies like the EEOC and MSPB. His advocacy has made a significant difference in the lives of employees wrongfully terminated, harassed, or retaliated against.

Glen D. Mangum is licensed in all Texas courts, several U.S. District Courts, the U.S. Courts of Appeals for the Fifth and Federal Circuits, and the U.S. Supreme Court. Glen is also a member of key organizations such as the State Bar of Texas’ Labor and Employment Law Section, the National Employment Lawyers Association, and its Texas and San Antonio chapters.

Law Office Affiliations

• Founder, Law Offices of Glen D. Mangum
• Member, State Bar of Texas’ Labor and Employment Law Section
• Member, National Employment Lawyers Association
• Member, Texas Employment Lawyers Association
• Member, San Antonio Chapter of the National Employment Lawyers Association

Licensed State

• Texas

Education

• St. Mary’s University School of Law
  Juris Doctor (JD)
• University of Texas at Austin
  Bachelor of Arts (BA)

Awards & Badges