A concrete poured wall corner slab saver and form attachment device that includes a slab saver corner piece having two sides with an inwardly directed central stem portion, and a form attachment device which is a generally shaped triangular form configured to be inserted between one side of corner piece and the stem portion of the corner piece. The form attachment device further a longitudinal aperture near an upper edge that extends through the attachment device with an aperture therein sized to insert a nail for engaging the combined slab saver corner piece and form attachment device to a form board, The attachment device has a generally C-shaped slotted portion forming a slotted aperture configured to engage the expanded portion of the stem of the corner piece and a hollowed core portion to more fully encase the device within the poured concrete.