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Monthly Labour Survey misconduct since at least the 1990s: Falsified statistics in Japan

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  • Tanaka, Sigeto

Abstract

The Monthly Labour Survey, which is one of the major economic statistics published by the Government of Japan, has been under criticism since January 2019 due to its negligent survey conduct and misinformation regarding its results. This paper approaches this scandal from a viewpoint of how the indicators of the quality of the survey were falsified and misreported. Based on published information regarding sample size and sampling errors, the author outlines three problems. (1) Since at least the 1990s, the survey’s sample size has been reported as larger than it actually was. (2) Since 2002, a significant portion of the sample has been secretly discarded. (3) Since 2004, the sampling error has been underreported by ignoring errors occurring in the strata of large establishments. These problems have escaped public attention as the government and academics are not critical of the falsification of basic information that determines the quality of the survey.

Suggested Citation

  • Tanaka, Sigeto, 2019. "Monthly Labour Survey misconduct since at least the 1990s: Falsified statistics in Japan," SocArXiv 2bf3z, Center for Open Science.
    • Handle: RePEc:osf:socarx:2bf3z
    DOI: 10.31219/osf.io/2bf3z
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