Work vehicle

The invention provides a work vehicle which can effectively utilize the lateral space of an oil cooler to save space. The work vehicle is provided with a check valve (400) which is formed in a long strip shape and allows oil to flow in the check valve from one side in the length direction to the other side in the length direction according to the hydraulic pressure on one side in the length direction of the check valve. One end of the check valve (400) in the longitudinal direction is connected to a first connection section (510) that connects the introduction port (62) and the oil outlet passage (200), and the other end of the check valve (400) in the longitudinal direction is connected to a second connection section (520) that connects the discharge port (63) and the oil circuit (300). The check valve (400) is disposed so that the longitudinal direction thereof faces the vertical direction. 本发明提供一种能够有效利用油冷却器的侧方的空间而实现省空间化的作业车。所述作业车具备止回阀(400)，该止回阀形成为长条状，并且根据该止回阀的长度方向一侧的液压而允许油在该止回阀中从该长度方向一侧朝向长度方向另一侧流动，止回阀(400)