Business Counsel & Litigation · Licensed in Missouri
Straightforward counsel for businesses that can't afford to guess.
O'Donnell Law LLC is the solo practice of Daniel P. O'Donnell, Jr. — an employment and business litigator with nearly 20 years of experience at national and regional firms. The firm represents employers, small businesses, and select individuals. When you call, you reach the attorney handling your matter — not an intake desk.
St. Louis office · Serving Missouri clients statewide · Colorado bar admission pending
Practice Areas
A deliberately focused practice built around employment law and the legal needs of small businesses — handled start to finish by the same attorney.
Employment Defense
Defense of employers in discrimination, harassment, retaliation, and wage and hour matters before state and federal courts, administrative agencies, and arbitration panels — backed by first-chair trial and arbitration experience at national labor and employment firms.
For employers
Non-Competes & Trade Secrets
Drafting, enforcing, and defending against non-competition and non-solicitation agreements — from pre-hire review to emergency injunction litigation. A core practice area for nearly two decades, on both sides of the dispute.
For employers & departing employees
Small Business Counsel & Commercial Disputes
Contracts, partnership and shareholder disputes, and the recurring legal questions of running a company — informed by years of complex commercial litigation, including class actions and high-stakes business disputes.
For owners & operators
Employment Claims for Individuals
Selective representation of employees and executives with strong claims — discrimination, retaliation, and contract disputes. The same defense-side experience that protects employers shows exactly where a plaintiff's case is winnable.
For individuals, case by case
The Attorney
Daniel P. O'Donnell, Jr. founded O'Donnell Law LLC in October 2024 after more than sixteen years in private practice — including at two of the country's leading national labor and employment firms, and as a partner at a respected St. Louis litigation boutique handling sophisticated commercial litigation, including class actions and partnership disputes.
His experience includes first-chair arbitrations, bench trials, evidentiary hearings, and mediations; oral argument in the court of appeals; and hundreds of depositions taken and defended. He is recognized for his depth in arbitration law: from 2017 to 2024, he taught Arbitration Theory & Practice as an Adjunct Professor at Washington University School of Law, and he has presented and published widely on arbitration agreements, non-compete enforcement, and Missouri employment law.
He started his own firm for a simple reason: to give small businesses the kind of counsel usually reserved for companies with big-firm budgets — direct, candid, and handled by the same attorney from the first call through resolution.
- Bar Admissions
- Missouri, 2007 (active, good standing) · Colorado, admission pending
- Education
- University of Missouri School of Law, J.D., 2007 — Associate Managing Editor, Missouri Law Review · University of Missouri-Columbia, B.A., History & Psychology, cum laude, 2004
- Teaching
- Adjunct Professor, Washington University in St. Louis School of Law (2017–2024): Arbitration Theory & Practice; Trial Practice and Procedure
- Honors & Affiliations
- Theodore McMillian American Inns of Court, Barrister (2015–2018) · Judicial internship, Chief Justice Michael A. Wolff, Supreme Court of Missouri
How the Practice Works
Small by design. That structure is the point — it changes what representation feels like.
Direct access
You communicate with the attorney handling your matter. Calls and emails are returned by the person who can actually answer the question.
Candid assessments
Before money is spent, you get an honest read on the strength of your position, the realistic outcomes, and whether the fight is worth its cost.
Predictable engagement
Clear scope and clear fee structures — hourly, flat-fee, or contingency where appropriate — agreed in writing before work begins.
Start a Conversation
Tell us briefly what's going on. We'll respond within one business day to let you know whether the matter is a fit and what the next step would be.
- Phone
- (314) 330-7459
- dan@odlawoffice.com
- Office
- 1420 Strassner Dr.
St. Louis, MO 63144 - Hours
- Monday–Friday, by appointment
Contacting the firm does not create an attorney–client relationship, and information sent before an engagement is established may not be treated as confidential. Please do not send detailed case information until a relationship is confirmed in writing.