Headhunters or executive search firms specialize in finding the right person for the right job. When a company wishes to recruit a new person for an important position， it may use the services of such a firm. The advantages for the employer are that it does not have to organize the costly and time-consuming process of advertising， selecting and interviewing suitable applicant. In some cases， the search firm may already have a list of people with the appropriate skills for the job. If this is not the case， then it may act as a consultant， advising or even organizing tests and simulations to evaluate candidates’ behavior in order to select the most competent person for the job.Headhunters also provide services like advertisement and candidate evaluation.