The study assessed the effect of grievance handling procedures on the employee performance in the Nigerian Export Promotion Council (NEPC), adopting the survey research design. The population of the study consists of 920 staff of the NEPC. The study used Taro Yamanes formula to determine the sample size of 279 staff members and also used a sample random sampling method to select respondents. The method of data collection used in the study was a questionnaire that was administered to the respondents. The statistical tool used is regression analysis. The results of the analysis indicate that the grievance handling procedure proxies such as the complaint unit and open-door policy have a positive and significant effect on the employees performance, while collective bargaining has a negative and insignificant effect on employees performance. This implies that the Nigerian Export Promotion Council should continue to effectively use grievance handling procedures such as the complaint unit and open door policy to settle dissatisfaction in the organisation. They should re-strategise towards the abatement of the use of collective bargaining to ensure that employees cases are settled to ensure effective employee performance in the organisation.