The present invention describes an orthotic back brace. The device comprises a shoulder posture strap that is attached to a system of pulleys. The pulley system tightens straps around the shoulders of the user when the user leans forward, thereby preventing this form of motion, and instead making the user bend at the knees. The device can be utilized to prevent back injuries, to support the back, and promote proper posture, which can cut down on back related injuries in the workplace.