Abstract: A drawer locking device for locking a plurality of drawers has respective blocking devices for blocking movement of the drawers and a connector connecting the blocking devices such that movement of any of the blocking devices caused by opening of the respective drawer causes a corresponding movement of each remaining blocking device to respective positions in which opening of the respective drawers is blocked. A method of assembling the drawer locking device comprises connecting the blocking devices with a furniture item at respective reference positions provided on the furniture item and fixing the connector to the blocking devices when they are connected with the respective reference positions. This provides a drawer locking device in which the blocking devices are fixed to the connector at spaced positions determined by the reference positions. The drawer locking device can then be disconnected from the item of furniture for refitting in an operative position.