This work machine comprises: a grip member which a driver who is sitting in a driving seat can grip; and an emergency stop switch which is provided to the grip member and which stops, according to human operation, the transmission of power to drive wheels. Preferably, the emergency stop switch is disposed in a region that is, in relation to the vertical direction, upward from the seat surface of the driving seat, and in relation to the horizontal direction, frontward from the back surface of the driving seat and rearward from a steering member.