The invention relates to a vehicle seat with a seat part and with a seat back part for supporting a driver of the vehicle in the sitting position on the vehicle seat, wherein the vehicle seat is characterized by an additional vehicle driver's torso support device which can be disposed outside the seat part and the seat back part and which can be temporarily disposed at least partially in an otherwise seat-free torso support region at the level of or above the upper third of the seat back part in front of the seat back part and laterally off-center on the seat back part, in order to provide support, laterally off-center of the seat back part, at least at the level of the shoulder or chest region of the driver who is sitting on the vehicle seat when he adopts a seated working posture oriented to the side or backwards, wherein the additional vehicle driver's torso support device is disposed so as to be movable by a moving device from a parked position into an additional torso support position in the otherwise seat-free torso support region.