TITLE:
Impact of Just-in-Time (JIT) Delivery on Operational Efficiency: A Study of Selected Manufacturing Firms in South-West Nigeria
AUTHORS:
Gabriel Onuche Ubolo, Yakubu Ambason Bala, Yusuf Salami, Ezra Usman Zubairu, Romanus Ajefu Onuche, Elizabeth Gebiri Mailafiya
KEYWORDS:
Supply Chain Management, Just-in-time, Operational, Efficiency, Nigeria
JOURNAL NAME:
Open Journal of Business and Management,
Vol.13 No.5,
September
5,
2025
ABSTRACT: This study examines the effect of Just-in-Time (JIT) delivery on operational efficiency in manufacturing firms located in South-West Nigeria. Adopting a descriptive survey research design, the study aimed to describe the existing relationship between JIT delivery and operational efficiency without manipulating variables. The target population included senior and junior staff from ten manufacturing firms, selected through a judgmental sampling technique based on their extensive experience in the manufacturing sector. A sample size of 360 was determined for the study. Primary data were collected using questionnaires, observations, and personal interviews, with the data analysis conducted using the Statistical Package for the Social Sciences (SPSS) version 27. The study employed Pearson Product-Moment Correlation Coefficient to assess the relationship between JIT delivery and operational efficiency. The findings revealed a strong positive correlation (r = 0.682) between JIT delivery and operational efficiency, indicating that increased implementation of JIT practices significantly enhances operational efficiency. The correlation was statistically significant (p = 0.000), reinforcing the robustness of the findings. These results underscore the critical role of JIT delivery in optimizing operational processes within manufacturing firms, suggesting that JIT is an effective strategy for improving efficiency and competitiveness in the Nigerian manufacturing industry.