1. Arita, S. 2016. Shugyo Kikai to Hoshu Kakusa no Shakaigaku: Hiseikikoyo/Shakaikaiso no Nikkan Hikaku [The Sociology of Reward Inequality among Employment Positions: A Comparison of Non-Standard Employment and Social Stratification in Japan and Korea]. Tokyo: University of Tokyo Press.
2. Barriers to ‘equal pay for work of equal value’ for women in Japan: Assessing the potential for change
3. Debanes P. C. Castellvi and M. Dwiyanti. 2021. Development and formalisation in Asia: Insights from Japan Republic of Korea and Singapore . ILO. Accessed 17 February 2023. https://www.ilo.org/wcmsp5/groups/public/–-asia/–-ro-bangkok/documents/publication/wcms_831141.pdf.
4. Doda. 2022. Fukugyō no jittai chōsa [survey on fukugyō ]. Accessed 13 February 2023. https://doda.jp/guide/ranking/097.html.