© ICBTS Copyright by Author(s) The 2019 International Academic Research Conference in Vienna 351 INFLUENCE OF ORGANIZATIONAL COMMITMENT ON RESIGNATION OF EMPLOYEES Sawittree Rattanavicharn * , Watcharapong Intrawong ** and Pattama Suriyakul Na Ayudhya ** * Graduate Student of Kasetsart University, Thailand E-mail Address: sawittree.r@gmail.com ** Department of Business Management, Faculty of Liberal Arts and Management Science, Kasetsart University, Thailand E-mail Address: Watcharapong.intr@ku.th, Pattama.s@ku.th ABSTRACT This research objective was aim to; 1) study the organizational commitment and the resignation of employee of Minth Apico and Minth Automobile Parts 2) investigate the different of organizational commitment and resignation of employees when classified by personal factors 3) study the influence of organizational commitment on resignation of employees. The target population used in the research was the employees of Minth Apico and Minth Automobile Parts a total of 229 people, the samples of this research was 157 by using Yamane's calculation formula. The data was collected by questionnaire, reliability was used Cronbach’s Alpha Coefficient by organizational commitment and resignation of employee was 0.836, and 0.748. Data was analyzed by frequency, percentage, mean, standard deviation, t-test, F-test (One Way ANOVA), Pearson's correlation, and regression analysis. The research results found that; the organizational commitment was at high level, meanwhile the resignation of employee was at the average mean. The hypothesis testing reveals that when classified by personal factors; the organizational commitment was different between gender, and employees’ resignation was different between age group. The organizational commitment had statistical significance influence on the resignation of employee at the level of .05 by the organizational commitment can predict the employees’ resignation of 24.3%, standardized coefficients (β) -0.243. Keywords - leadership, Organizational Commitment, Demands the Resignation of Employee INTRODUCTION Background Organizations today want to increase their business growth and a competitive advantage over time, by using available resources to achieve the desired goals, quality employees are considered important resources able to create an advantage for the organization. It must be connecting employees to the corporate values and employees’ commitment to the organization also. Current situation of many organizations in Thailand will tend to employees resigning from the organization, or change to other occupations. It is causing losses to such organizations, because of the cost and wasting time training employees with knowledge, ability, expertise, and experience. The resignation of the employee's is considered a burden and cost of the company, because the company invested in the development of that person. In terms of the impact on the organization, it will lose the cost of recruiting, selecting, training, and developing new employees. In addition, during the recruitment process, people came to replace those who resigned, the productivity and efficiency of the organization will be reduced for a while due to insufficient personnel for the work process, and if any organization has a high staff turnover rate, it will make the organization lack stability, organization may has internal problems, and if the person who resigns from the organization is a skilled staff and high ability, it will affect the operation of the organization and may cause damage, also destroying the spirit and encouragement of the person who is still in the organization. Minth Apico Group was established in 1992, MINTH Auto Parts Company began its humble life as a small factory in the Xiao gang Development Zone located on the outskirts of Ningbo. In 1997, the company organized its various branch companies into a single Group Company, and MINTH Group Limited entered into a new area in the field of exterior auto-parts of passenger vehicle in Mainland China. On 1 December 2005, Minth Group was listed in the Hong Kong Stock Exchange. Minth has now expanded to become a leading supplier in design, manufacturing and sales of body structural parts, trims and decorative parts of passenger vehicles. From the importance mention