Katie Lipp (Katie Aufderhaar) litigates labor and employment and business matters for corporate and management-level clients. Katie was recently recognized as a “Legal Elite” in the area of construction law.

Katie regularly advises construction and government contractors in all aspects of construction disputes and management, including prompt payment resolution, terminations, change orders, subcontract and teaming agreements, OSHA citations, small business classifications and appeals, bid protests, and navigating commercial lease issues. Katie has a deep understanding of the Freedom of Information Act (FOIA), and frequently uses FOIA to get contractors paid on public projects.

Katie dedicates the other half of her legal practice to management-side labor and employment representation. Katie has extensive experience negotiating collective-bargaining agreements and advising employers on labor union issues in the workplace. On the litigation side, Katie has handled a multitude of employment-related lawsuits, including cases brought under Title VII of the Civil Rights Act, the Fair Labor Standards Act (FLSA), and the Family and Medical Leave Act (FMLA). In the alternative dispute resolution sphere, Katie has achieved successful outcomes in wrongful termination cases brought by labor unions against employers.

Katie also represents corporate clients and executives in corporate fraud matters, non-compete disputes, breach of contract claims, and other business disputes and corporate transactional matters.

Katie has extensive experience with both government and private sector entities. She has worked with the U.S. Army’s war fighter contracting and FOIA division, the Coast Guard’s Office of Procurement Law, and the Department of Veterans Affairs’ appellate litigation division, along with several private firms in the Washington DC metro area. Before joining Berenzweig Leonard in 2011, she worked for a well-known construction and government contracts litigation firm in Washington, DC.


  • Virginia Business Magazine, Legal Elite for Construction Law, 2012


  • Construction Contract Workshop, Stafford County, Examining Legal Issues and Contract Disputes, December 2015
  • Contract Drafting Essentials and Defamation in the Digital Age, The Association of Bridal Consultants, 2013

Published Articles

Professional Memberships 

  • George Mason American Inn of Court
  • Co-Chair, Professional Services Council Human Resources and Labor Committee
  • Legal Services of Northern Virginia, Pro Bono Employment Law Project (Participant)
  • Virginia State Bar (Construction and Public Contracts Section)
  • Fairfax Bar Association (Employment, Government Contracts, and Business Law Sections)
  • American Bar Association (Forum on Construction Law; Labor and Employment Law Section)
  • DRI (Construction Law Committee)