An object of the present invention is to reduce digging of the ground by a rear wheel on the inside of a turn and turning of a work place during turning. A work vehicle (1) includes a traveling body (2) on which an engine (5) is mounted, left and right traveling sections (4) supporting the traveling body (2), a steering operation tool (14) for changing a traveling direction of the traveling body (2), and left and right. Left and right main disconnecting members 48 for interrupting the transmission of power to the traveling section 4, and the main disconnecting member 48 for the traveling section 4 inside the turning operation is shut off in accordance with the steering operation of the steering operation tool 14. The work vehicle is provided with left and right auxiliary disconnecting members 111 and a reduction mechanism 131 separately from the left and right main disconnecting members 48, and the power toward the traveling portion 4 inside the turning is transmitted via the reduction mechanism 131. Then, the traveling unit 4 inside the turning is driven at a lower speed than the traveling unit 4 outside the turning. [Selection diagram] FIG.【課題】旋回時に旋回内側の後車輪により地面が掘られて作業地が荒れるのを低減する。【解決手段】作業車１は、エンジン５を搭載した走行機体２と、走行機体２を支持する左右の走行部４と、走行機体２の進行方向を変更操作する操向操作具１４と、左右の走行部４への動力伝達を継断する左右の主継断部材４８とを備え、操向操作具１４の操向操作に応じて旋回内側の走行部４に対する主継断部材４８を遮断作動させる作業車であって、左右の主継断部材４８とは別個に、左右の副継断部材１１１及び減速機構１３１を備え、旋回内側の走行部４に向かう動力が減速機構１３１を経由して、旋回内側の走行部４を旋回外側の走行部４よりも低速で駆動させる。【選択図】図９
