PROBLEM TO BE SOLVED: To facilitate changing the direction of an operators body to the rear when the operator is going to change his posture from facing ahead into the condition facing backward or sideways while he is seated on the seat part.SOLUTION: A seat 60 of a working vehicle 1 having a working machine unit 17 in the rear is furnished with cuts 62c formed on the left and the right side below the seat back 62 of the seat 60 in such a way as recessing toward the center of the seat back 62. Further, cuts 61m recessing toward the center of the seating part 61 are formed on the left and right of the part behind the seating part 61.COPYRIGHT: (C)2007,JPO&INPIT【課題】操縦者が着座部に着座したまま、その姿勢を前方を向いた状態から後方や側方を向いた状態に変える際に、体を後方に向けやすくする。【解決手段】作業機17を後方に有する作業車両1のシート60において、前記シート60の背もたれ部62下側の左右両側部に当該背もたれ部62中心に向かって窪む切欠部62c・62cを設けた。また、着座部61後側の左右両側部に当該着座部61中心に向かって窪む切欠部61m・61mを設けた。【選択図】図13