A light emitting device (LED), an LED package, and a lighting system including the LED package are provided. The light emitting device (LED) may include a light emitting structure, a carrier injection layer, and an electrode layer. The light emitting structure may include a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer. The carrier injection layer may be positioned over the light emitting structure, and the electrode layer may be positioned over the carrier injection layer.