With the purpose of improving the survey methods used in the field of labor, we generally examined and summarized the current state of and issues related to the survey methods. In addition, we conducted an experimental study to understand the characteristics of Internet monitor surveys that are increasing rapidly in recent years and analyzed the results. In the experimental study, we used the same questionnaire as for a conventional survey method (in which visits are made to respondents who were selected by random sampling for an interview) in conducting five different types of surveys (three types of Internet surveys on publicly recruited monitors, an Internet survey on randomly selected monitors, and a mail survey on mixed monitors).