A work vehicle comprising: a traveling vehicle body; a driving section formed on the traveling vehicle body; a cabin having a cabin frame and covering the driving section; a cushion member interposed between the traveling vehicle body and the cabin supported to the traveling vehicle body; wherein the cabin includes a dynamic shock absorbing mechanism having a weight support member transversely supported at an upper portion of the cabin frame and extending along a transverse width of the vehicle body, and a weight member supported at a center portion in the vehicle body transverse width direction of the weight support member; characterized in that the weight support member comprises an elastic member (32, 33) that has a smaller elastic modulus than an elastic modulus of the cabin frame, the dynamic shock absorbing mechanism includes: a front-facing elastic support member extending forwardly along the vehicle body front/rear direction from the center portion in the vehicle body transverse width direction and having a smaller elastic modulus than the elastic modulus of the cabin frame; and a rear-facing elastic support member extending rearwardly along the vehicle body front/rear direction from the center portion and having a smaller elastic modulus than the elastic modulus of the cabin frame; and the weight member includes: a front weight member supported to the center portion via the front-facing elastic support member; and a rear weight member supported to the center portion via the rear-facing elastic support member. a traveling vehicle body; a driving section formed on the traveling vehicle body; a cabin having a cabin frame and covering the driving section; a cushion member interposed between the traveling vehicle body and the cabin supported to the traveling vehicle body; wherein the cabin includes a dynamic shock absorbing mechanism having a weight support member transversely supported at an upper portion of the cabin frame and extending along a transverse width of the vehicle body, and a weight member supported at a center portion in the vehicle body transverse width direction of the weight support member; characterized in that the weight support member comprises an elastic member (32, 33) that has a smaller elastic modulus than an elastic modulus of the cabin frame, the dynamic shock absorbing mechanism includes: a front-facing elastic support member extending forwardly along the vehicle body front/rear direction from the center portion in the vehicle body transverse width direction and having a smaller elastic modulus than the elastic modulus of the cabin frame; and a rear-facing elastic support member extending rearwardly along the vehicle body front/rear direction from the center portion and having a smaller elastic modulus than the elastic modulus of the cabin frame; and a front-facing elastic support member extending forwardly along the vehicle body front/rear direction from the center portion in the vehicle body transverse width direction and having a smaller elastic modulus than the elastic modulus of the cabin frame; and a rear-facing elastic support member extending rearwardly along the vehicle body front/rear direction from the center portion and having a smaller elastic modulus than the elastic modulus of the cabin frame; and the weight member includes: a front weight member supported to the center portion via the front-facing elastic support member; and a rear weight member supported to the center portion via the rear-facing elastic support member. a front weight member supported to the center portion via the front-facing elastic support member; and a rear weight member supported to the center portion via the rear-facing elastic support member.