A microwave oven has an oven chamber, a door hinged to the chamber, and at least one door position switch. The switch provides a signal on door position to a central process unit of the oven. A door position switch assembly includes the switch mounted on the door and adjacent a sliding cover element that is adapted to protect the switch in an open configuration of the door and a first protruding element adapted to move the sliding cover element when the door is closed on the oven chamber in order to make the switch accessible. Additionally, a second protruding element may be included that is adapted to actuate the switch in its accessible configuration.