In recent years, there has been acknowledgment of a relationship between safety and national culture. However, empirical studies on the impact of national culture on safety attitudes, behaviour and performance seem to be limited, despite the significant role of cultural differences in business operations. To address this, the current paper presents a study aimed to understand the role of national culture on safety behaviour among petrochemical employees within the context of Saudi Arabia. Specific objectives of the study include: (1) To identify the cultural dimensions that influence safety behaviour; and (2) To develop strategies or guidelines for the improvement of workplace safety behaviour by considering national culture dimensions. The paper also discusses the research method which includes the use of questionnaire survey to determine which national culture dimensions influence safety behaviour for employees as well as the use of Bayesian Belief Network to examine the influence of national culture dimensions on safety behaviour through psychological precursors as mediators.