A full mediation model of staff performance on project success in road supervision

Authors

DOI:

https://doi.org/10.15587/2706-5448.2025.338032

Keywords:

road supervision consultancy, construction project management, project success, mediation analysis, regression analysis, stratified sampling, Likert scale

Abstract

The object of research is the road supervision consultant teams operating in East Kalimantan (Indonesia). One of the most problematic areas is understanding the mechanism by which sub-professional staff performance influences project success via professional staff. Using an explanatory quantitative approach with survey data (n = 55), regression with mediation testing (PROCESS Model 4) was employed. The results confirmed a full mediation model: Sub-professional performance significantly predicted professional performance (B = 1.0127, p < 0.001), and professional performance significantly predicted project success (B = 0.8377, p < 0.001). Crucially, the direct effect of sub-professional performance on project success became insignificant (p = 0.358) when professional performance was included, while the indirect effect was substantial (Effect = 0.8483). This clarifies a key feature of project workflows: technical contributions must be transformed through managerial capabilities to impact outcomes. This allows for a clearer understanding beyond individual contributions. Compared to studies assessing factors in isolation, this offers a systemic view, highlighting the critical importance of the managerial layer (professional staff) in converting technical work into strategic success.

Author Biographies

Amir Amir, National Institute of Technology, Malang

Doctoral Student

Doctoral Program in Engineering Management

Sutanto Hidayat, National Institute of Technology, Malang

Professor, Senior Lecturer

Doctoral Program in Engineering Management

Jimmy Jimmy, National Institute of Technology, Malang

Senior Lecturer

Department of Chemical Engineering

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A full mediation model of staff performance on project success in road supervision

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Published

2025-10-30

How to Cite

Amir, A., Hidayat, S., & Jimmy, J. (2025). A full mediation model of staff performance on project success in road supervision. Technology Audit and Production Reserves, 5(4(85), 26–31. https://doi.org/10.15587/2706-5448.2025.338032

Issue

Vol. 5 No. 4(85) (2025): Economics of enterprises. Macroeconomics

Section

Economics and Enterprise Management

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Copyright (c) 2025 Amir Amir, Sutanto Hidayat, Jimmy Jimmy

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