IDEAS home Printed from
   My bibliography  Save this paper

Involuntary Non-Regular Workers in Japan and Their Mental Health (Japanese)


  • YAMAMOTO Isamu


Using Japanese longitudinal data from the Keio Household Panel Survey 2004-2010, this paper focuses on those who work involuntarily as non-regular workers because they could not secure jobs as regular employees. Our findings are as follows: First, the majority of non-regular workers are categorized as voluntary although the number of involuntary non-regular workers is not negligible—about 1.5 times more than that of the unemployed. Second, more involuntary non-regular workers are found among non-married workers, those in their 20s or 40-50s, contract and temporary agency workers, transport and machine-operation workers, or manufacturing process workers. Third, judging from the selection and transition behavior among labor force status, involuntary non-regular workers have more similarity with unemployed persons and less similarity with voluntary non-regular workers. Fourth, the measured mental health index indicates that the stress levels of non-regular workers, unemployed persons, and non-workers are higher than that of regular employees. After controlling for individual heterogeneity and endogeneity of the labor force status, however, only involuntary non-regular workers and unemployed persons show to have higher stress levels than regular employees. It is interpreted that involuntary non-regular workers as well as unemployed persons are worse off due to the demand-side constraints, and they are therefore likely to face mental health illness compared with regular employees or voluntary non-regular workers.

Suggested Citation

  • YAMAMOTO Isamu, 2011. "Involuntary Non-Regular Workers in Japan and Their Mental Health (Japanese)," Discussion Papers (Japanese) 11052, Research Institute of Economy, Trade and Industry (RIETI).
  • Handle: RePEc:eti:rdpsjp:11052

    Download full text from publisher

    File URL:
    Download Restriction: no

    More about this item

    NEP fields

    This paper has been announced in the following NEP Reports:


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eti:rdpsjp:11052. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (KUMAGAI, Akiko). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.