PROBLEM TO BE SOLVED: To provide an agricultural work machine in which positions of a handle and a driver seat as well as a position of a lifting step can be adjusted to suit a body type and an operation posture of an operator even when the operator changes.SOLUTION: A work vehicle is provided with: a work device for performing work in a farm field, which is provided at a rear part of a vehicle body a driver seat 3 on which an operator rides provided in the vehicle body and a handle provided in front of the driver seat. A seat 16 on which the operator sits is supported at a seat floor 14 through a link mechanism 15 which swings in parallel in a back and forth direction. A forward and backward movement handle 19 for rotating a screw rod 18 screwed to a front link 17 of the link mechanism 15 and moving the seat 16 forward and backward is provided. A seat angle adjustment handle 21 for moving a front end part of a lower link 20 of the link mechanism 15 vertically and adjusting a forward tilting angle of the seat 16 is provided.COPYRIGHT: (C)2015,JPO&INPIT【課題】作業者が変わっても、ハンドルや運転席のシート位置、及び昇降ステップ位置を、作業者の体格や操作姿勢に合わせて調節可能な農作業機を提供する。【解決手段】走行車体の後部に、圃場で作業を行う作業装置を設け、走行車体に作業者が搭乗する運転席3を設け、運転席3の前方にハンドルを設けた作業車両において、シートフロア14に、前後に平行揺動するリンク機構15を介して作業者が着座するシート16を支持し、リンク機構15のフロントリンク17に螺合させた螺杆18を回動させてシート16を前後移動させる前後動ハンドル19を設け、リンク機構15のロアリンク20の前端部を上下動させてシート16の前傾角度を調節するシート角調節ハンドル21を設けて構成する。【選択図】図3