Equip. Oper. hit a rut, causing tractor to bounce, jarring operator. He reported discomfort in neck, seen by DR 6/4 sent for Xray, no fractures found. Oper. returned next scheduled shift w/no restrictions. Later seen for pain complaint, placed on work restriction w/RX. Initially reported 5/31,became reportable on 6/12 w/RX & restrictions given.