Disclosed is a harvester comprising an operation linkage mechanism that transmits a swinging operation of an operation lever 13 to a steering drive part and a lifting/lowering drive part. The operation linkage mechanism includes: a steering unit that links the operation lever 13 and the steering drive part； and a lifting/lowering unit that links the operation lever 13 and the lifting/lowering drive part. Each unit includes an output operating body 71 that transmits the swinging movement of the operation lever 13 to the steering drive part or the lifting/lowering drive part. Within a preset movable range of the steering drive part or the lifting/lowering drive part, the output operating body 71 moves integrally with the operation lever 13 by following the swinging movement thereof. After the steering drive part or the lifting/lowering drive part has reached a movement limit of the movable range, if the operation lever 13 is operated in a direction that moves the steering drive part or the lifting/lowering drive part toward a side beyond said movable range, the output operating body 71 does not integrally follow the operation lever 13, and the operation lever 13 alone is permitted to perform the swinging movement.
