The study was necessitated by the concern that Nigerian public sector organisations operate within a highly diverse socio-cultural environment, many of them have not fully converted organisation culture into better employee performance because of weak organisation culture practices, limited inclusive culture and inadequate understanding of interactional workplace processes. Therefore, this study examined the effect of inclusive organisation culture on employee performance among Civil Service in Ondo State, Nigeria. The study adopted a descriptive survey research design. The population consisted of 26,409 employees in the Ondo State Civil Service. A sample size of 379 respondents was determined using Krejcie and Morgan’s method. A structured questionnaire was used for data collection. Out of 379 copies of the questionnaire distributed, 362 were retrieved, representing 95.5 percent. Data were analysed using Partial Least Squares Structural Equation Modelling. The findings showed that inclusive organisation culture has positive and significant effect on employee performance, with inclusivity having beta value of 0.371 and p-value of 0.000, perception of fairness having beta value of 0.159 and p value of 0.028, and perception of respect having beta value of 0.301 and p-value of 0.000. The inclusive organisation culture model explained 45.4 percent of employee performance. The study concluded that inclusive organisation culture has a positive and significant effect on employee performance in the Ondo State Civil Service. Therefore, the study recommended that staff should be trained to value diverse perspectives, involve employees from different backgrounds in decision making and create an atmosphere where employees feel respected by supervisors and colleagues.

Keywords: inclusive, organisation culture, employee performance, Ondo State, Nigeria.