The objectives of this research are to analyze employee turnover intention, to observe the determinants on employee turnover intention, and to develop organization development interventions to reduce employee turnover intention of sales department of a water filtration enterprise in Bangkok. The action research is conducted in three stages: pre-ODI, ODI, and post-ODI. One hundred samplers from the sales department of a water filtration enterprise in Bangkok are involved in the data collection and organization development intervention procedure. Data is analyzed by the observation of Percentage, Mean, Standard Deviation (S.D.), and Multiple Linear Regression (MLR).