A motor control device for a working vehicle comprises: a running drive device for transmitting the rotation of a motor to the wheels by way of a torque converter; a first selection device which is operated in order to select a power mode or economy mode; a second selection device which is different from the first selection device; a mode switching device for switching from the economy mode to the power mode when the second selection device is operated while the economy mode has been selected by the first selection device; and a speed restriction device which, if the economy mode is set, restricts the maximum rotational speed of the motor to a lower speed than when the power mode has been set.