A support system designed to reduce the stress exerted on the back of a wearer when he bends over to lift a load. It comprises a harness and a yoke for distributing the load on the shoulder of the wearer and a tension system equipped with elastic cables. It further comprises leggings including straps designed to wrap around the sole of the wearer and to maintain the force acting on the leg as close as possible to the bone structure of the leg of the wearer, thereby relieving stress on his back and along his legs.