A press brake used to bend a plate-shaped workpiece with an operator (OP) standing and sitting and including an operation panel operable by the operator (OP), the press brake being characterized in that it comprises: an attachment base provided on a main body frame and having paired fixation links on opposite sides from each other in a horizontal direction; an upper link arm having a base end portion disposed between and turnably connected to an upper portion of one of the fixation links and an upper portion of the other fixation link and configured to swing in an up-down direction; a lower link arm having a base end portion disposed between and turnably connected to a lower portion of the one fixation link and a lower portion of the other fixation link and configured to swing in the up-down direction; a raised-lowered body having a mounting portion to which the operation panel is mounted and paired raised-lowered links which are on opposite sides from each other in the horizontal direction and which are disposed between and turnably connected to a distal end portion of the upper link arm and a distal end portion of the lower link arm , the raised-lowered body configured to be raised and lowered, wherein the paired fixation links , the upper link arm , the lower link arm and the paired raised-lowered links form a parallel link mechanism configured to allow the operation panel to be raised and lowered; a spring configured to generate torque (T2) depending on a height position of the operation panel in an opposite direction to torque (T1) generated by weight of the operation panel ; and a torque hinge configured to maintain a posture of the parallel link mechanism by absorbing a torque difference between the torque (T1) generated by the weight of the operation panel and the torque (T2) generated by the spring . an attachment base provided on a main body frame and having paired fixation links on opposite sides from each other in a horizontal direction; an upper link arm having a base end portion disposed between and turnably connected to an upper portion of one of the fixation links and an upper portion of the other fixation link and configured to swing in an up-down direction; a lower link arm having a base end portion disposed between and turnably connected to a lower portion of the one fixation link and a lower portion of the other fixation link and configured to swing in the up-down direction; a raised-lowered body having a mounting portion to which the operation panel is mounted and paired raised-lowered links which are on opposite sides from each other in the horizontal direction and which are disposed between and turnably connected to a distal end portion of the upper link arm and a distal end portion of the lower link arm , the raised-lowered body configured to be raised and lowered, wherein the paired fixation links , the upper link arm , the lower link arm and the paired raised-lowered links form a parallel link mechanism configured to allow the operation panel to be raised and lowered; a spring configured to generate torque (T2) depending on a height position of the operation panel in an opposite direction to torque (T1) generated by weight of the operation panel ; and a torque hinge configured to maintain a posture of the parallel link mechanism by absorbing a torque difference between the torque (T1) generated by the weight of the operation panel and the torque (T2) generated by the spring . <EOS>