David John Marshall
Katz, Marshall & Banks, LLP • Washington, DC
Contracts AgreementsEmployment LawEnergyFalse Claims ActLabor & Employment
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Contact
Email
Phone
(202) 417-2652
Address
1718 Connecticut Avenue, Washington, DC, 20009-1148, US
Professional
About
David John Marshall is a distinguished attorney based in Washington, specializing in Employment Law, the False Claims Act, Labor and Employment, Personal Injury, Rail, and Tax law. With nearly four decades of experience, he has dedicated his career to fighting against injustice and unfair business practices, passionately advocating for the rights of hard-working individuals and their families. Throughout his career, Mr. Marshall has stood shoulder to shoulder with clients from various industries, including coal mining, nuclear energy, and finance. His commitment to defending those who raise their voices against wrongdoing is evident in his work with whistleblowers who expose unsafe practices and fraud, whether it involves protecting the livelihoods of coal miners or championing the cause of a CFO who acts to safeguard taxpayer interests. The opportunity to represent deserving individuals against powerful corporations is what drives him daily, making his legal practice not just a job, but a true calling. Recognized as a top whistleblower and employment lawyer by Washingtonian Magazine and other esteemed publications, Mr. Marshall has successfully represented hundreds of clients, earning him the prestigious “AV Preeminent” rating from Martindale-Hubbell, the highest possible peer review recognition. As a founding partner of Katz, Marshall & Banks, LLP, he focuses on corporate whistleblower claims, particularly those arising under the Sarbanes-Oxley Act and the False Claims Act. Since the enactment of the Dodd-Frank Act in 2010, he has solidified his reputation as a leading attorney in this field, continually striving to defend the rights of individuals against corporate malfeasance.
About Contracts Agreements Law
Contract attorneys draft, review, and negotiate agreements to protect clients' interests. They help resolve disputes when contracts are breached. Common matters include contract drafting, contract review, negotiations, breach of contract.
Credentials
Education
1980 Harvard University Law School JD - Juris Doctor N/A Emory University BA - Bachelor of Arts
Languages
English
Recognition & Involvement
Awards
2013 Super Lawyer, Super Lawyers 2012 Super Lawyer, Super Lawyers 2011 Top Lawyer, Washingtonian Magazine 2011 Super Lawyer, Super Lawyers 2010 Super Lawyer, Super Lawyers
Publications
2013 American Bar Association Section of Labor and Employment Law Committee on Federal Labor Standards Legislation Sarbanes-Oxley Midwinter Report 2013 Law360 SEC Must Stop The Latest Effort To Impede Whistleblowers 2013 American Law Institute CLE Program Whistleblower Protections in the Affordable Care Act 2012 American Bar Association Section of Labor and Employment Law Committee on Federal Labor Standards Legislation Sarbanes-Oxley Midwinter Report 2012 D.C. Bar CLE Program Update: Doing Well by Doing the Right Thing: A Whistleblower’s Guide to the SEC Whistleblower Program and the New Rules that Can Lead to Rewards for Reporting Securities Violations
Associations
2012 - Present American Bar Association Labor and Employment Section’s Subcommittee on the Sarbanes-Oxley Act of 2002 Whistleblower-side co-chair District of Columbia Bar Member State Bar of Georgia Member Metropolitan Washington Employment Lawyers Association Member National Legal Aid and Defender Association Member
Speaking
2013 Washington Metropolitan Area Corporate Counsel Association CLE Program Best Practices in Handling Sarbanes-Oxley, Dodd-Frank, False Claims Act and Other Sensitive Whistleblower Complaints 2013 Metropolitan Washington Employment Lawyers Association Annual Meeting Ethical Use of Employer Data 2013 Institute for Continuing Legal Education in Georgia CLE Program The New SEC and CFTC Whistleblower Programs: A Summary for Attorneys Pursuing and Defending the New Whistleblower Claims Created by Dodd-Frank 2013 American Law Institute CLE Program The Affordable Care Act’s Whistleblower Provisions and OSHA’s Interim Final Rule: What Employers and Counsel Need to Know 2012 Procurement Fraud Committee of the American Bar Association’s Section of Public Contract Law Strategic Considerations Involved in Litigating Retaliation Claims in Procurement Fraud Cases
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Updated: Aug 06, 2026