Nebraska Extension offers Tractor Safety Training for youth looking to become certified through a Hazardous Occupations Course. All youth, ages 14-15, working on a farm or ranch other than their own MUST be certified through a Hazardous Occupations Course. Successful completion of the course will allow trained youth to operate a tractor over 20 horsepower, or to connect or disconnect an implement or any of its parts to or from a tractor.