A work vehicle includes a vehicle body frame extending in a vehicle body front/rear direction, a front wheel unit and a rear wheel unit attached to the vehicle body frame, a driver's seat disposed upwardly of the vehicle body frame, a ROPS and and an operational tool operable by a driver seated at the driver's seat. The ROPS includes a pair of left and right lower portions fixed to the vehicle body frame and an upper portion supported to the lower portions to be pivotable between a vertical posture and a horizontal posture about a pivot shaft extending in a vehicle body transverse direction, an actuator unit for generating power, and an operational mechanism configured to pivot the upper portion with using the power. The actuator is controlled by the operational tool.
