Susan Hannagan   Email Me  214.396.9652

Susan Hannagan
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Represent clients in state and federal courts across Texas and the United States in employment disputes and complex business matters, including breach of contract, fraud, partnership disputes, construction, energy, consumer matters, intellectual property, and breach of fiduciary duty. Advise clients on employment issues including non-competition, non-solicitation, and non-disclosure agreements, policies and procedures, as well as in discrimination, harassment, wage and hour, and wrongful termination claims both in front of administrative bodies and in federal and state courts. Serve as outside general counsel for small companies, working with their leadership teams in developing overall business strategies and identifying and solving legal risk.  Work with clients to understand their overall goals and develop a strategy for achieving them on an individualized basis and as part of a long-term plan. Clients include technology, consulting, marketing, energy, insurance, and industrial companies, as well as lending and finance institutions. Some highlights of Susan’s experience include:

  • Negotiating and drafting business deals and settlement agreements on behalf of clients, including developing and implementing creative solutions to atypical legal situations.

  • Serving as lead trial counsel in a commercial lease dispute where a former landlord sued his client. As defense counsel, Susan obtained a take-nothing judgment and an award of attorney’s fees for her client.

  • Serving as counsel in a case where an insured sued the firm’s insurance company client for bad faith. A unanimous jury returned a judgment against the Plaintiff on the firm’s client’s counterclaim for fraud.

  • Serving as lead trial defense counsel in a case where her client’s former employee appealed a denial of unemployment wages to the district court, and Susan obtained a take-nothing judgment.

  • Obtaining a take-nothing judgment as lead trial counsel for a Fortune 500 company in a claim for fraud and breach of contract.

  • Obtaining temporary and permanent injunctive relief against former employees who have violated restrictive covenants and misappropriated trade secrets.

Education, Awards, and

J.D., Texas Tech University School of Law (2007), cum laude
Board of Barristers
B.A., Austin College (2005), magna cum laude
Political Science

Awards and Recognitions
Texas Rising Star, 2014-2019
Dallas Association of Young Lawyers - One to Watch, 2013
Up-and-Coming 50 Women: 2017-2018 Texas Rising Star
Up-and-Coming 100: 2018 Texas Rising Star

State Bar of Texas
Northern District of Texas
Southern District of Texas
Eastern District of Texas
Western District of Texas
United States Court of Appeals for the Fifth Circuit

Work Experience
Partner, Okon Hannagan, PLLC, Dallas (2016-present)
Associate, Estes Okon Thorne & Carr, PLLC, Dallas (2012-2016)
Associate, Anderson Tobin, PLLC, Dallas (2010-2012)
Associate, Schachter Harris, LLP, Dallas, (2008-2010)

Member, State Bar of Texas
Member, Dallas Association of Young Lawyers
Member, Dallas Bar Association
The William ‘Mac’ Taylor American Inn of Court
Dallas Womens Lawyers Association
National Association of Minority and Woman Owned Law Firms
DAYL Leadership Class


Publications and Speaking

A Tale of Two Statutes: Employee Leave Under the FMLA and the ADA - Dallas Bar Association Headnotes - 01/14 - Co-Author

Supporting Women is Good Business - Texas Lawyer - 10/2014 - Co-Author

HB 40: Impact on Municipal Regulation of Oil & Gas Operations - Dallas Bar Association Headnotes - 2016 - Co-Author

What Every In-House Counsel Should Know About Employment Law - Dallas Association of Young Lawyers - Panel Member

Speaker and Coordinator for DBA Law Day

DAYL Trial Skills Bootcamp series speaker and committee

Presenter for DBA Student Law Intern Program voir dire seminar