A laminated work production apparatus for producing a laminated work by punching a plate-like metal material into a plate-like work of a predetermined shape and stacking a plurality of the plate-like works includes a mold for punching the metal material, a stacking jig moving mechanism for moving a stacking jig to a stacking position where the plate-like works are stacked, a retention mechanism for retaining the punched plate-like works at a retaining position different from the stacking position until a preset number is reached, and a knockout mechanism for knocking out a plurality of plate-like works in a punching direction and stacking the plate-like works on the stacking jig arranged at the stacking position when the preset number of plate-like works are retained in the retention mechanism.