When scrutinizing a new job, it is common to check the content published in job magazines and the Internet. However, there is much more private job listings in career change agents than public information. For some reason, this information is not publicly available. First of all, large companies and excellent companies are very popular, so if you disclose job information, you will be flooded with applications from job seekers and job seekers. Therefore, we will use a career change agent to keep the information private. We may also place jobs to develop new projects and new products. In such cases, keep the job private so that the information is not leaked to the competitors. Alternatively, if you only want to hire people who excel in some expertise, we will not disclose recruitment information. We will do it privately when we need human resources who meet the conditions right now, or when we definitely want human resources because it does not matter if it takes time. For this reason, much of the information on career change agents is private. Such private job information can be viewed through interviews with job change advisors, depending on the skills of the job seeker registered with the job change agent and the type of job required. Information that is not disclosed by the career change agent is considered to be the result of the recruiter seeking better talent.