A pedal unit (1) comprises: a pedal member (3) which is provided on a vehicle body side so as to be adjacent to a slide door of a vehicle and has a flat plate section (4) on which an occupant's foot is placed; and a drive device (2) which is affixed to the pedal member (3) and drives the slide door to open and close. The pedal member (3) is molded using a resin material and has an accommodation portion (5) which is provided on a bottom (5a) formed below the upper surface (4a) of the flat plate section (4). The drive device (2) is fixed while at least a part thereof is accommodated within the accommodation portion (5).