A cabinet is fitted with a locking assembly suited for simultaneously locking or unlocking all of the drawers retained within the cabinet assembly. The locking assembly includes a primary actuation assembly, accessible from the exterior of the cabinet which engages a secondary actuation assembly. The secondary actuation assembly defines a plurality of lip elements which are displaceable intermediate the glide assembly which is associated with each drawer of the cabinet. In a closed, locked condition the lip elements are displaced in front of the glide elements thereby forming an obstacle to the lateral displacement of the glide assembly thereby precluding the outward withdrawal of the drawer from its retained position within the cabinet. In an open position, the lip elements are displaced to a position outside of the travel path of the glide assembly whereby they do not impede the operation of those glide assemblies.