Provided are an organic light emitting display device (OLED), which can prevent the occurrence of galvanic corrosion and ensure reliable adhesion of source and drain electrodes with a first electrode during rework of the first electrode, and a method of fabricating the same. The OLED includes a substrate; a thin film transistor (TFT) disposed on the substrate and including a semiconductor layer, a gate electrode, and source and drain electrodes; a first metal layer disposed on the source and drain electrodes of the TFT; an insulating layer disposed on the substrate including the first metal layer; a first electrode disposed on the insulating layer and electrically connected to the TFT, the first electrode including a second metal layer; a pixel defining layer disposed on the first electrode; an organic layer disposed on the pixel defining layer; and a second electrode disposed on the organic layer.