A job control device, a multifunction device, and an operation method thereof are provided. The job control device includes a middleware unit that supports connection with a multifunction device comprising multiple devices having independent functions, and a job control unit that controls performing of a job by at least one device from among the plurality of devices through the middleware unit. A multifunction device includes a multiple devices that have independent functions and a middleware unit that requests a job call to the job control device. A device, from among the plurality of devices, called from the job control device through the middleware unit executes a corresponding function.