Effect of quality management systems framework specifically ISO 9001, ISO 45001, ISO 14001 and ISO 31000 standards on operational performance

Goal: This study investigated the effect of quality management systems (QMS), with an emphasis on International Organization for Standardization (ISO) standards, in enhancing operational performance within Nigeria's manufacturing sector. The primary objective is to examine how QMS frameworks, specifically ISO 9001, ISO 45001, ISO 14001, and ISO 31000 standards, influence key operational metrics, including efficiency, defect reduction, customer satisfaction, and process improvement. Methodology: This research used a quantitative method and regression analysis to analyze data from 320 manufacturing company employees in Southwest Nigeria. The data was collected through a structured survey of participants in the Nigerian manufacturing sector. Findings: Results revealed that operational performance is positively enhanced by the combined effect of the quality management metrics. However, ISO 31000 risk management practices show the strongest impact on the Nigerian manufacturing sector. The combined metrics, which incorporate ideas from ISO standards such as ISO 9001 (quality management), ISO 45001 (occupational health and safety), and ISO 14001 (environmental management), create a solid foundation for operational improvement. Limitations: This research is limited to the use of the cross-sectional method and centers on specific QMS practices. Implications: The implications of this study are significant for both practitioners and researchers in the field of quality management, particularly within the context of Nigeria's manufacturing sector. Originality: There have been previous studies that talked about the role of the quality management systems, however, none of them combined role played by ISO 9001, ISO 45001, ISO 14001, and ISO 31000. Moreover, the study served as an addition to the existing literature.