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Development of Calculation Method for Full-Time Equivalent Workers per Man-Year to Improve Fatality Rate Estimation

Author

Listed:
  • Jayho Soh

    (Hyundai Engineering and Construction, 75 Yulgok-ro, Jongno-gu, Seoul 03058, Republic of Korea
    Theses authors contributed equally to this work.)

  • Jaehyun Lee

    (Department of Architecture and Building Engineering, Kunsan National University, Daehak-ro 558, Gunsan-si 54150, Republic of Korea
    Theses authors contributed equally to this work.)

  • Jaewook Jeong

    (Department of Safety Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of Korea)

  • Jaemin Jeong

    (Department of Civil and Mineral Engineering, University of Toronto, 27 King’s College Cir, Toronto, ON M5S 1A1, Canada)

  • Jeongwook Son

    (Department of Architectural & Urban Systems Engineering, Ewha Womans University, Seoul 03760, Republic of Korea)

Abstract

The fatality rate in the construction industry is a key indicator for assessing safety management, with the number of workers being a critical factor in its estimation. Many countries rely on sampling inspections or assumptions to determine the number of workers, which can lead to inaccuracies in evaluating the fatality rate. In this study, we developed a method to calculate the full-time equivalent workers per man-year (FTEW m·y ) to more accurately estimate the fatality rate, taking into account building and work types using daily work reports (DWRs). The research process included six steps: (i) selecting a target project; (ii) establishing a database; (iii) developing the FTEW m·y framework based on the DWR; (iv) validating the framework; (v) calculating the FTEW m·y for residential building projects in the Republic of Korea; and (vi) applying the framework. The key findings included the following: the FTEW m·y /USD for residential projects was 1.1 × 10 −3 FTEW m·y /USD, with the framework achieving an accuracy of 85.30% and an R 2 value of 92.92% through five-fold cross-validation. The FTEW m·y for residential buildings in the Republic of Korea was 4.5 × 10 7 FTEW m·y , and the fatality rate was 0.011‱. This framework offers a more precise way of evaluating fatality rates by considering specific building and work types, improving safety management practices in the construction industry.

Suggested Citation

  • Jayho Soh & Jaehyun Lee & Jaewook Jeong & Jaemin Jeong & Jeongwook Son, 2024. "Development of Calculation Method for Full-Time Equivalent Workers per Man-Year to Improve Fatality Rate Estimation," Sustainability, MDPI, vol. 16(21), pages 1-19, October.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:21:p:9443-:d:1510473
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    References listed on IDEAS

    as
    1. Byung Wan Jo & Yun Sung Lee & Jung Hoon Kim & Rana Muhammad Asad Khan, 2017. "Trend Analysis of Construction Industrial Accidents in Korea from 2011 to 2015," Sustainability, MDPI, vol. 9(8), pages 1-12, July.
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