 Wiens taught science for one year and began operating a farm near Herschel around the same time.He also served as president of the Saskatchewan School Trustees Association and of the Canadian School Board Association.Wiens served in the provincial cabinet as Minister of Agriculture and Food, as Minister of Highways and Transportation, as Minister of the Environment and Public Safety, as Minister of the Environment and Resource Management, as Minister of Intergovernmental and Aboriginal Affairs and as Provincial Secretary.