The population in this research is all of the permanent lecturers employed at University of Lambung Mangkurat (ULM). The respondents are taken from 4 academic ranks, which are represented by Asisten Ahli (Instructor), Lektor (Assistant Professor), Lektor Kepala (Associate Professor), and Guru Besar (Professor). One hundred and thirty samples were collected by using a proportional-stratified random sampling method. A Partial Least Square (PLS) method was used to analyze the data. The results showed that lecturers with a positive perception of the organizational support available to them feel more satisfied with their job, which in turn encourages the creation of a high organizational commitment and results in the emergence of positive organizational citizenship behavior (OCB). These study's results showed us the application of social exchange theory and organizational support theory in a higher educational institution. The findings of this study are considered to be important, as they provide additional empirical evidence regarding the importance of organizational support as a basis for improving the ULM lecturers' job satisfaction, organizational commitment, and OCB. The implications and further research are also discussed.