His practice has included all aspects of civil litigation with a regular case load of personal injury, environmental, construction and professional liability litigation. He is AV rated by Martindale-Hubble and has been selected for inclusion in "Best Lawyers in America" for commercial litigation and mediation. Nelson has also been selected for inclusion in "Alaska Superlawyers" in construction litigation since 2007.Nelson is admitted to practice in both Alaska and Oregon. He was formerly a member of the Alaska Supreme Court's Standing Committee on Civil Procedures and the U.S. District Court's Standing Committee for Civil Justice Reform. He served on the Alaska Bar Association Ethics Committee from 1994 to 2012 and was the chair of that Committee from 2007. He became a member of the Board of Governors of the Alaska Bar Association in 2012. He speaks regularly on ethics issues in the practice of law.