The work posture holding device 10 includes a waist portion holding portion 11 for holding the waist portion of the user, a lumbar support portion 11 for supporting the waist portion holding portion 11, and rotatably connected to the waist portion holding portion 11 and extending along the users leg portion A foot portion 13a that is connected to the leg portion 12a and is grounded to support the entire body, a fixing portion 14a that fixes the leg portion 12a and the user, and a leg portion 12a that includes a waist holding portion 11 And a locking mechanism 15a for switching between a variable state in which the distance between the connecting portion of the leg portion 13a and the leg portion 13a can be changed and a locked state in which the distance is fixed, 12a is locked, the waist of the user is held by the waist holding part 11 to hold the standing posture, and the user can walk when the leg part 12a is made variable.作業姿勢保持装置10は、使用者の腰部を保持する腰部保持部11と、腰部保持部11を支持すると共に、腰部保持部11に回動可能に接続され、使用者の脚部に沿って延在する脚部12aと、脚部12aと接続され、接地して全体を支持する足部13aと、脚部12aと使用者とを固定する固定部14aと、脚部12aについて、腰部保持部11との接続部と、足部13aとの接続部との間の距離を変化可能な可変状態と、上記距離を固定するロック状態とを切り替えるロック機構15aと、を備え、ロック機構15aによって脚部12aをロック状態とした場合に腰部保持部11で使用者の腰部を保持して立ち姿勢を保持し、脚部12aを可変状態とした場合に使用者を歩行可能とする。
