Abstract: Vertebral strain relief is provided to a keyboard or other data input device operator by a support device attached to the desktop or other data input device-holding structure and projects obliquely and upwardly under the forearms and elbows of the operator to create the same type of upper body support provided by the arms of an armchair. The support structure comprises a pair of telescopic tubular members which provides for height and distance adjustment of the support member as well as its placement, in stowed position, in level contact with the edge of the working surface.