In forming a door switch for microwave ovens, two switches are built into a single switch case to make size reduction possible, and making a common use of switch parts helps to reduce the number of parts, thereby reducing cost. Further, providing a door switch of contact switching construction adapted to tilt in operative association with the opening and closing of the door makes it possible to realize highly accurate switching performance. There are provided a first switch which, at the time of tilting of a first tiltable lever, elastically displaces an electrically conductive contact piece in the switch case to effect switching between the contacts, a second switch which, at the time of tilting of the lever, elastically displaces another electrically conductive contact piece in the switch case at another timing somewhat different from the timing for switching between the contacts of the first switch, thereby switching between the contacts, and a third switch which is subjected to switching at the time of tilting of the second tiltable lever.