Supply Chain Integration and Employee Productivity in Maritime Firms in Nigeria
Keywords:
Chinese corporate tax system, Foreign investment, Export of Chinese products, sustainability, technology, 21st-century, innovation, CSR, Supply Chain Integration, Employee Productivity, Internal Integration, External Integration, Maritime Firms.Abstract
This study investigated the effect of Supply Chain Integration (SCI) on Employee Productivity (EP) in maritime firms in Delta State, Nigeria. The study focused on three dimensions of SCI: Supply Chain Integration Index (SCII), Internal Integration (II), and External Integration (EI), examining how each relates to employee productivity outcomes in a developing regional context. The study was anchored on the Productivity Theory. A descriptive survey research design was adopted. The population of the study comprised 9,540 employees from selected maritime firms, with a sample size of 370 determined using Morgan’s table. Out of the 370 questionnaires distributed, 293 were validly returned, representing a response rate of 79.19%. The research instrument was a structured questionnaire validated by experts and tested for reliability, yielding a Cronbach’s alpha coefficient of 0.79. Data collected were analyzed using descriptive statistics, Pearson correlation, and multiple regression techniques. Findings revealed that SCII and II have significant positive effects on employee productivity, while EI showed a negative but significant effect. Specifically, the regression analysis showed that II had the strongest positive influence on EP (β = 0.749, p< 0.01), followed by SCII (β = 0.227, p< 0.01), while EI had a negative coefficient (β = -0.183, p< 0.05), suggesting possible inefficiencies or trust deficits in external collaboration. It recommends targeted investment in internal systems, enhanced collaboration across departments, and more strategic external partnerships. The findings provide practical insights for policymakers and organizational leaders seeking to optimize employee output through integrated supply chain strategies in similar developing economies.
References
Adeoye O., Omotayo F. (2021) The impact of supply chain integration on organizational performance in the Nigerian maritime sector. 22(1), 90–108.
Adewuyi O., Oke A. (2020) Supply chain integration and organizational performance in Nigerian shipping companies. 12(2), 45–58.
Agbo I., Okoli E., Ezenwoke O. (2022) Workplace structure and employee productivity in Nigerian logistics firms. 14(1), 78–90.
Al-Mashari M., Zairi M., Al-Mudimigh A. (2021) Supply chain integration and performance: A contextual perspective. 41(3), 476–498.
Alomari K. M., Alrowwad A. A., Youssef M. A. (2022) The effect of supply chain integration on firm performance: Evidence from logistics companies. 5(1), 1–12.
Amah E., Ahiauzu A. (2021) Internal organizational dynamics and employee productivity in service-based organizations. 12(2), 44–56.
Awolusi O. D., Omodero C. O. (2023) External integration and employee performance: A study of Nigerian maritime organizations. 7(1), 64–81.
Chen H., Daugherty P. J., Roath A. S. (2020) Supply chain integration and firm performance: The moderating effects of interdependence. 41(2), 85–100.
Chowdhury P., Paul S. K., Moktadir M. A. (2023) Supply chain integration and resilience: A critical review and future research agenda. 28(2), 123–138.
Chukwu M. C., Bassey F. E. (2024) Employee productivity and operational practices in marine cargo handling firms in Nigeria. 9(1), 88–103.
Danese P., Romano P., Formentini M. (2021) The impact of internal integration on performance: Evidence from global manufacturing. 41(4), 397–419.
Daryanto A., Salleh N. Z. M., Zainal R. (2022) Technological capabilities and external integration in maritime supply chains. 24(2), 189–207.
R. Dubey, A. Gunasekaran, S. J. Childe, D. Roubaud (2021) Empirical investigation of data analytics capability and supply chain performance. 231, 107850.
N. S. Ezeani, B. O. Akinyemi (2023) Operational integration and workforce productivity: Empirical evidence from Nigerian maritime organizations. 11(3), 201–217.
K. J. Ezenwa, S. T. Oghene (2023) Technological integration and employee performance in seaport operations in South-South Nigeria. 11(3), 115–130.
B. B. Flynn, B. Huo, X. Zhao (2019) The impact of supply chain integration on performance: A contingency and configuration approach. 37(3), 11–24.
B. B. Flynn, B. Huo, X. Zhao (2020) The impact of internal integration and relationship commitment on supply chain performance. 56(1), 25–41.
B. Fynes, S. de Búrca, D. Marshall (2021) Environmental uncertainty, supply chain relationship quality and performance: A conceptual model. 27(1), 100637.
K. Govindan, C. J. C. Jabbour, Q. Zhu (2022) Synergistic effects of internal green integration and operational performance. 350, 131447.
M. S. S. Jajja, K. A. Chatha, S. Farooq (2020) Impact of external integration on organizational responsiveness and performance. 58(12), 3786–3804.
M. S. S. Jajja, K. A. Chatha, S. Farooq (2020) Lean practices and employee performance: The moderating effect of supply chain learning. 31(6), 469–482.
M. Kamalahmadi, M. M. Parast (2021) Internal integration and business continuity: A resilience-based view of supply chain. 234, 108042.
D. Kim, R. P. Lee (2021) Internal integration and employee innovation: Evidence from high-tech manufacturing firms. 123, 523–532.
S. Kusi-Sarpong, J. Sarkis, X. Wang (2022) Sustainable supply chain integration and firm performance: A resource-based view. 159, 102640.
E. A. Locke, G. P. Latham (1990) A Theory of Goal Setting and Task Performance.
A. Manfreda, M. Indihar Štemberger, A. Kovacic (2021) Measuring supply chain integration using a maturity model. 70(6), 1230-1248.
U. S. Muogbo, B. O. Ogbonna (2020) Organizational integration and employee productivity in Nigerian maritime industry. 8(5), 17–29.
C. Nwachukwu, I. Ogbonna, E. Ugochukwu (2021) Challenges and opportunities in Nigeria's maritime logistics sector. 8(2), 34–47.
M. A. Ogunleye, K. T. Salami (2021) Internal communication, inter-departmental collaboration and employee productivity in the Nigerian transport logistics sector. 8(4), 34–49.
D. Ogunyemi, R. Oloruntoba (2023) Challenges to external supply chain integration in sub-Saharan Africa: Evidence from Nigerian logistics firms. 14(1), 122–140.
C. Okonkwo, K. Adebayo (2023) Supply chain dynamics and human capital performance in emerging economies. 16(1), 45–59.
A. O. Olabode, T. O. Yusuf (2023) Internal integration and employee performance in Nigeria's maritime logistics sector. 18(1), 112–129.
B. O. Omisore, I. O. Adeleke (2022) Goal setting, supply chain support, and employee output in logistics firms. 16(3), 61–71.
B. T. Omonona, A. A. Oloyede, R. Bassey (2023) Drivers of employee productivity in Nigeria's transport and logistics sector. 5(2), 145–160.
R. K. Singh, S. Modgil (2022) Internal supply chain integration and performance: The role of culture and communication. 29(8), 2450–2472.
R. Srinivasan, T. M. Simatupang (2023) External integration and collaborative advantage in port logistics. 50(4), 412–430.
A. Tabiu, I. A. Nura (2021) Employee motivation and productivity in Nigerian maritime firms: Goal-setting and feedback mechanisms. 15(1), 23–38.
I. N. Udo, B. I. Etim (2022) External partnerships and workforce efficiency in the Nigerian maritime subsector. 10(1), 25–39.
F. C. Uzonwanne (2022) Workplace integration and employee performance in Nigeria's logistics firms. 9(1), 98–112.
A. Wieland, R. B. Handfield (2021) The social embeddedness of supply chains: Implications for resilience and performance. 42(3), 349–364.
F. Wiengarten, P. Humphreys, G. Cao, M. McHugh (2020) Collaborative supply chain practices and performance: Evidence from emerging markets. 230, 107801.
C. Y. Wong, S. Boon-itt, C. W. Wong (2022) The impact of internal integration on firm performance: Evidence from the shipping industry. 33(1), 67–83.
C. Y. Wong, S. Boon-itt, C. W. Y. Wong (2022) The contingency effects of environmental uncertainty on the relationship between supply chain integration and operational performance. 68(1), 13–29.
H. Zhou, W. C. Benton (2020) Supply chain practice and information sharing performance: Evidence from Chinese manufacturers. 183, 842–856.
H. Zhou, W. C. Benton (2023) Supply chain practice and information sharing: Exploring the links to firm performance. 256, 108745.
Y. Zhou, Y. Shou, W. Zhu (2023) Digital supply chain integration and employee outcomes: Evidence from the Chinese manufacturing sector. 153, 68–78.
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Authors and Global Journals Private Limited

This work is licensed under a Creative Commons Attribution 4.0 International License.
