A load-lifting device for mounting on a vehicle, including a platform for receiving a load which can be brought from a lowered into a raised working position, and back again, as well as a linking lever, a support element, a drive element and a connection element. The linking lever that is pivotally mounted on the platform is linked to the vehicle at a linking end region. The support element attached to the platform includes a foot end which braces the ground. The drive element brings the support element from a resting state associated with the resting position of the platform, into a working state in which the foot end is braced on the ground and the platform is raised into the working position. The connection element functions to control the rotational position of the linking lever and the pivot position of the platform according to the support element.