600 17th Street, Suite 600N

Denver, CO 80202

John M. Lebsack, Of Counsel

Lebsack, John

John M. Lebsack has been a lawyer at White & Steele in Denver since his admission to the bar in 1979. His practice comprises a wide variety of defense litigation, with an emphasis on appeals, coverage disputes, and professional liability. John has argued appeals before the United States Court of Appeals for the Tenth Circuit, the Colorado Supreme Court, and the Colorado Court of appeals. He has tried cases in state courts throughout the Front Range as well as Federal court in Denver. John also advises lawyers with regard to ethical issues, and serves as an expert witness on ethical and professional issues. For several years, John has served as an adjunct professor at the University of Colorado Law School where he teaches a course on legal ethics and professionalism.

In 2003 John Lebsack received the Colorado Trial Lawyers Association’s annual award to a member of the defense bar “for the highest standards of competency, ethics and professionalism.” He was a member of the Colorado Supreme Court Grievance Committee from 1995 to 1999 and was chair in 1998-1999. He was chair of the Colorado Appellate Discipline Commission in 1999-2000. He currently serves as one of the Colorado Supreme Court’s panel of hearing board members who decide attorney discipline cases. In 2006-2007 John was chair of the Ethics Committee of the Colorado Bar Association. From 2011 through 2017, John was a member of the Committee on Conduct, United States District Court for the District of Colorado, and served as chair of that committee in 2013-2014. In 2017, the Colorado Supreme Court appointed John to the Civil Rules Committee, which makes recommendations to the court about changes to the rules of procedure that govern all civil cases in the state. John is a fellow emeritus of the Colorado Bar Foundation.


  • Yale University, B.A. 1975
  • University of Denver College of Law, J.D. 1978
  • University of Colorado-Boulder, M.S. in Computer Science 2003


  • United States Supreme Court
  • United States Court of Appeals for the Tenth Circuit
  • United States District Court for the District of Colorado
  • Colorado Supreme Court


  • Colorado Bar Association, Member of Ethics Committee since 1990
  • Faculty of Federal Advocates


Practice Areas

Commercial Litigation
Insurance Bad Faith/Extra Contractual
Legal Malpractice
Product Liability
Professional Liability