Ecclesiastical Reform
As archbishop, Odo issued constitutions regulating clerical duties, marriage, fasting, and tithing; these are described as the first surviving constitutions of a tenth-century English ecclesiastical reformer. He reorganized diocesan structure and reformed the sees of Elmham and Lindsey.
He supported the monastic reform movement associated with Dunstan and is credited with consecrating Dunstan as bishop. His own profession as a monk at Fleury-sur-Loire before his enthronement aligned him with the Benedictine renewal then spreading from the Continent into England.