Atty. David John Marshall

Atty. David John Marshall

Mr. David John Marshall is a lawyer practicing whistleblower litigation, employment discrimination, consumer class actions and 4 other areas of law.

Washington Washington 45 yrs experience 45 year
Call (771) 220-5976 Book Appointment

Consumer Class Actions & More Attorney · Serving Washington, DC · 45+ Years Experience

Profile Summary

About David John Marshall at a Glance

David John Marshall is a Partner based in Washington, District of Columbia, practicing at Katz Marshall Banks Llp. They have 45+ years of legal experience, licensed to practice since 1981. Their practice focuses on wrongful termination, discrimination, contracts, class action, and whistleblower. Admitted to practice in Georgia (1981), Supreme Court of Georgia (1981), U.S. District Court, Northern District of Georgia (1982), and District of Columbia (2000). Educated at Harvard Law School (J.D., 1980) and Emory University (B.A., 1977). Recognitions include AV Preeminent. Active member of District of Columbia Bar State Bar of Georgia National Employment Lawyers Association National Associates of Consumer Advocates American Trial Lawyers Association. Serves clients in Washington, DC and the surrounding metropolitan area.

Verified attorney profile · Updated November 2026

About David John Marshall

  • Mr. David John Marshall is a lawyer practicing whistleblower litigation, employment discrimination, consumer class actions and 4 other areas of law
  • David received a B.A. degree from Emory University in 1977, and has been licensed for 45 years
  • David practices at Katz, Marshall & Banks, LLP in Washington, DC

Practice Areas Explained

David John Marshall's Areas of Legal Practice

Each practice area below reflects the types of cases David John Marshall handles, with a practical overview of what that area of law involves and how it may apply to your situation in Washington.

Wrongful Termination in Washington

David John Marshall is one of 6,861 wrongful termination attorneys indexed nationally. Browse wrongful termination attorneys in District of Columbia →

Workplace Discrimination in Washington

David John Marshall is one of 7,049 discrimination attorneys indexed nationally. Browse discrimination attorneys in District of Columbia →

Contracts in Washington

David John Marshall is one of 76,101 contracts attorneys indexed nationally. Browse contracts attorneys in District of Columbia →

Class Action in Washington

David John Marshall is one of 26,226 class action attorneys indexed nationally. Browse class action attorneys in District of Columbia →

Whistleblower & Retaliation in Washington

David John Marshall is one of 3,523 whistleblower attorneys indexed nationally. Browse whistleblower attorneys in District of Columbia →

Jurisdictional Context

Why Local Counsel Matters in Washington

Practicing law in District of Columbia. Legal matters in District of Columbia are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Washington are typically filed in the local municipal court or the appropriate District of Columbia state district court, depending on subject matter and amount in controversy. An attorney licensed in District of Columbia brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in District of Columbia courts without local counsel or pro hac vice admission.

Washington Courts and Legal Process

Choosing a Washington-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

Looking for additional District of Columbia attorneys? Browse all attorneys in Washington or all attorneys in District of Columbia.

Frequently Asked

Common Questions About David John Marshall

Where is David John Marshall's law office located?
David John Marshall's law practice is located in Washington, District of Columbia. The firm is Katz Marshall Banks Llp. You can contact the office directly through this profile page.
What practice areas does David John Marshall handle?
David John Marshall focuses on wrongful termination, discrimination, contracts, class action, whistleblower. Each practice area listed reflects experience handling cases of that type in District of Columbia.
How long has David John Marshall practiced law?
David John Marshall has 45+ years of legal experience and has been licensed since 1981.
Where did David John Marshall go to law school?
David John Marshall earned their education at (J.D., 1980); (B.A., 1977).
How can I contact David John Marshall for a consultation?
You can contact David John Marshall directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has David John Marshall received?
David John Marshall's notable recognition includes: AV Preeminent.

Professional Profile

Why Clients in Washington Choose David John Marshall

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish David John Marshall's practice in the field of wrongful termination, discrimination, contracts, class action, and whistleblower.

Decade-Tested Legal Experience

David John Marshall brings 45+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Multi-State Bar Admission

Licensed in Georgia, Supreme Court of Georgia, and U.S. District Court, Northern District of Georgia, David John Marshall can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Broad Practice Area Coverage

Covering wrongful termination, discrimination, and contracts, David John Marshall can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Washington

A Washington-based practice means David John Marshall attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Search Reference

How People Find David John Marshall Online

Prospective clients searching for legal help in Washington commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like David John Marshall.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with David John Marshall directly.

Education & Law School Background

J.D.
Harvard Law School
- 1980
B.A.
Emory University
- 1977

Awards & Professional Honors

AV Preeminent

Bar Admissions & Licensed Jurisdictions

Georgia
Admitted: 1981
Supreme Court of Georgia
Admitted: 1981
U.S. District Court, Northern District of Georgia
Admitted: 1982
District of Columbia
Admitted: 2000
U.S. District Court, District of Columbia
Admitted: 2003

Client Reviews & Ratings — David John Marshall

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