According to one aspect of the present invention, in a stator, each coil is a multi-layer coil that is formed by winding a conductor in a plurality of layers in an inside-outside direction of loops in a winding portion, and that includes on inner and outer peripheral sides of a coil end portion a plurality of lane change portions formed by the conductor, and a bus bar portion is embedded in a clearance between the lane change portions of the coil of a different phase placed between the coils of the same phase which are connected to each other.