A work vehicle comprising a console box, wherein: the console box includes a box body turnable between a first posture and a second posture, the second posture being achieved as result of upward movement of the box body from the first posture, a manipulation lever arranged to protrude from the box body, a lock lever arranged to protrude from the box body, the lock lever being configured to be turnable, a biasing member configured to bias the box body in a direction for bringing the box body into the second posture, and a lock cam configured to lock turning of the box body both in the first posture and in the second posture, the lock cam includes a guide member having a cam groove, and a cam arm configured to turn integrally with the lock lever, the cam arm has an insertion portion inserted into the cam groove, characterized in that a helical torsion spring is arranged to connect the cam arm and the guide member, the helical torsion spring being configured to bias the cam arm, during movement of the insertion portion along the cam groove, the cam arm inverts a direction in which the box body is caused to turn by a biasing force of the helical torsion spring, and the helical torsion spring has a coil portion arranged closer to a center in a left-right direction of the box body than is the guide member. the console box includes a box body turnable between a first posture and a second posture, the second posture being achieved as result of upward movement of the box body from the first posture, a manipulation lever arranged to protrude from the box body, a lock lever arranged to protrude from the box body, the lock lever being configured to be turnable, a biasing member configured to bias the box body in a direction for bringing the box body into the second posture, and a lock cam configured to lock turning of the box body both in the first posture and in the second posture, a box body turnable between a first posture and a second posture, the second posture being achieved as result of upward movement of the box body from the first posture, a manipulation lever arranged to protrude from the box body, a lock lever arranged to protrude from the box body, the lock lever being configured to be turnable, a biasing member configured to bias the box body in a direction for bringing the box body into the second posture, and a lock cam configured to lock turning of the box body both in the first posture and in the second posture, the lock cam includes a guide member having a cam groove, and a cam arm configured to turn integrally with the lock lever, a guide member having a cam groove, and a cam arm configured to turn integrally with the lock lever, the cam arm has an insertion portion inserted into the cam groove, characterized in that a helical torsion spring is arranged to connect the cam arm and the guide member, the helical torsion spring being configured to bias the cam arm, during movement of the insertion portion along the cam groove, the cam arm inverts a direction in which the box body is caused to turn by a biasing force of the helical torsion spring, and the helical torsion spring has a coil portion arranged closer to a center in a left-right direction of the box body than is the guide member.