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This chapter proposes a novel framework for quantifying human rights risks in global supply chain: multi-regional socially extended input-output analysis, or MRSEIO. MRSEIO combines social life cycle assessment (S-LCA) and multi-regional input-output analysis (MRIO) and is capable of identifying social risks at different stages of a product’s supply chain. As a demonstration, the authors calculated the negative global human rights impact of the Japanese economy for the year of 2015. Our MRSEIO analysis indicated that a total of 1.656 × 1012 hours of labor was conducted globally under various human rights risks to sustain Japanese economy, equivalent of putting 965 million labors at risk. Notwithstanding the limitations, the authors believe the MRSEIO framework provides a powerful tool in ensuring responsible supply chains.

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Quantifying Human Rights in Global Supply Chain: Socially Extended Input-Output Analysis (MRSEIO)

  • 章节

  • 发表日期：

    2025年

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  • Shutaro Takeda,
  • Takuya Shimamura,
  • Nobumichi Shinohara,
  • Misa Iwamoto,
  • Daikichi Seki,
  • Alexander Ryota Keeley,
  • Shunsuke Managi

摘要

This chapter proposes a novel framework for quantifying human rights risks in global supply chain: multi-regional socially extended input-output analysis, or MRSEIO. MRSEIO combines social life cycle assessment (S-LCA) and multi-regional input-output analysis (MRIO) and is capable of identifying social risks at different stages of a product’s supply chain. As a demonstration, the authors calculated the negative global human rights impact of the Japanese economy for the year of 2015. Our MRSEIO analysis indicated that a total of 1.656 × 1012 hours of labor was conducted globally under various human rights risks to sustain Japanese economy, equivalent of putting 965 million labors at risk. Notwithstanding the limitations, the authors believe the MRSEIO framework provides a powerful tool in ensuring responsible supply chains.