Justice Baker has been involved in many professional activities. As a member of the Iowa State Bar Association, he was involved in Jury Instructions Committee, Bench/Bar Committee, and the Appellate Practice Committee where he participated in the writing of the Appellate Practice Manual. He is currently the co-chairman of the Bench/Bar Committee. Justice Baker also served as a temporary bar examiner for 10 years and has been a lecturer for the Iowa Bar Review School. In the Linn County Bar Association, he served as a member of the Ethics and Grievance Committee. He is currently a member of the Sixth Judicial District Judicial Nominating Commission. He was also a member of the Merit Selection Panel involved in the selection of the U.S. Magistrate for the Northern District of Iowa. He was the chairman of Amicus Curiae Committee for the Iowa Trial Lawyers Association. Based upon the recommendations of his peers and judges, he was inducted into the Iowa Academy of Trial Lawyers, whose membership is limited to 250 attorneys who have displayed exceptional skills and the highest integrity. He is currently a member of Mason Ladd Inn of Court.