George’s research developed and tested an integrated model of manufacturing practices and factory fitness, using the theory of swift even flow as a theoretical lens in the operations management setting. The contingency theory provided the framework for conceptualising and structuring this study. Companies in order to achieve production fitness they must improve the speed of resources flow and reduce overall variability associated with their processes. Data used in this study is part of Global Manufacturing Research Group (GMRG) fourth round. In order to test the various relationships between the variables, structural equation modelling techniques were employed. To understand how manufacturing practices affect the factory fitness, moderation and mediation models were tested.