An organic light-emitting display apparatus for blocking or preventing an electrode of an organic light-emitting device from being shorted with another electrode of the organic light-emitting device at the bent portions of the electrode and for blocking or preventing impurities from penetrating into an organic layer through the bent portions. The organic light-emitting display apparatus includes: a first electrode; a pixel defining layer formed to have a thickness away from the first electrode and covering edge portions of the first electrode; a light-emitting layer on the first electrode; a second electrode on the light-emitting layer; and a stepheight lowering layer over a portion where the first electrode contacts the pixel defining layer, and between the first electrode and the light-emitting layer or between the light-emitting layer and the second electrode, to reduce a bend of the second electrode over the portion where the first electrode contacts the pixel defining layer.