An operation unit of an image forming apparatus having a plurality of operation modes, allowing accurate and easy input by the user requesting switching of display to a screen image allowing selection of an operation mode, includes: a pilot lamp, a touch-panel display, and hardware keys including a power key, an energy-saving key and a home key. The home key that switches the display on the touch-panel display to an operation mode selecting screen image (home screen image) when pressed is provided closer to the touch-panel display than other hardware buttons.