Provided is a work vehicle capable of switching changing destinations of a vehicle speed upper limit value according to situations. In addition, provided is a combine capable of easily performing an operation for setting a vehicle speed at which a driver experiences a vehicle speed as a maximum vehicle speed during driving. In addition, provided is a harvester in which acceleration felt by the driver when a shift operation device is operated is hard to be changed even when a harvested amount stored in a reservoir is changed. The work vehicle has a working device and a transmission mechanism for shifting a drive force transmitted from a power source to transmit the drive force to a traveling device, and the transmission mechanism includes a continuously-variable shifting device capable of continuously changing the speed ratio of the transmission mechanism, and a sub speed shifting device capable of changing the speed-change state of the transmission mechanism in the range between a low-speed state and a high-speed state, and has a speed shift control device for controlling the continuously-variable shifting device in accordance with a limit instruction value which indicates a vehicle speed upper limit value so that the vehicle speed becomes less than or equal to a preset vehicle speed upper limit value, in which a limit instruction value is changeable when the speed shift state is the low speed state, and the limit instruction value is set to either a first limit value or a second limit value when the shift state is changed from the low speed state to the high speed state.상황에 따라서 차속 상한값의 변경처를 전환하는 것이 가능한 작업차를 제공한다. 또한, 주행 중에 조종자가 체감하는 차속을 최대 차속으로서 설정하는 조작을 간단하게 행할 수 있는 콤바인을 제공한다. 또한, 수확물 저류부에 저류되어 있는 수확물량이 변동되어도 변속 조작구를 조작하였을 때에 조종자가 느끼는 가속감이 변화되기 어려운 수확기를 제공한다.작업 장치를 구비하는 작업차이며, 동력원으로부터 전달된 구동력을 변속하여 주행 장치에 전달하는 변속 기구를 구비하고, 변속 기구는, 변속 기구에 있어서의 변속비를 무단계로 변경 가능한 무단 변속 장치와, 변속 기구에 있어서의 변속 상태를 저속 상태와 고속 상태 사이에서 변경 가능한 부 변속 장치를 갖고 있고, 차속이 설정된 차속 상한값 이하로 되도록 차속 상한값을
