This study was implemented for the purpose of analyzing the Job Competency level of accredited and non-accredited program's graduates. And we were seeking way to manage realistic and effective way of Accreditation of Engineering education. In order to achieve the purpose of this study, survey and FGI were done. The study was: accredited program's graduates thought more positively than non-accredited program's graduates, and graduates felt that 11 Job Competencies Level of Work Performance were lower than the needs of job performance. The conclusions of this study were summarized as follows: First, between accredited and non-accredited program's graduates, we could see significant recognition difference about the perception of the needs of job performance. This was because Design curriculum were reinforced and accredited program's graduates had attended design program at accredited program. Second, accredited program's graduates felt higher than non-accredited program's graduates about the perception of level of work performance. This was because the efforts for curriculum reorganizing and teaching methods improvement were done. Third, we could not find significant recognition difference about the perception of the needs for job performance and work level. That was because accredited and non-accredited program were not dealed seperately. The conclusions of this study are summarized as follows: First, The efforts for analyzing job competence of industry and reflecting the program curriculum are needed on the accredited program for engineering education. Second, Government should make the incentive policy about the companies which give some merits to the accreditation graduates, and monitor constantly their real working. Third, in order that the accreditation results can be trustful on staff recruiting or school choosing, accreditation should make outcome-based-evaluation which guarantees competence of graduates.