Disruption era presents a challenge for nurses in hospitals to remain high-performing. One of the factors that influence the improvement of team performance is good cooperation among team members. This collaboration can be reflected in the extra role behavior of staff that is created if the staff has a good level of OCB, so hospital managers need to understand the factors that influence the increase in OCB in nurses. The factors that are the focus of this research are tenure and cultural values. The objective of the research is to observe the effect of tenure and cultural values of the Bugis, Makassar, Toraja and Mandar tribes on the Organizational Citizenship Behavior of Nurses in Hospitals. This quantitative research uses a cross sectional study approach to 500 respondents in five hospitals. The sample was selected by simple random sampling, then analyzed using the Logistics Regression test on the JASP software. The five hospitals considered to represent the Bugis, Makassar, Toraja and Mandar tribes are Syekh Yusuf Gowa Hospital, H. Padjonga Dg. Ngalle Takalar, Lasinrang Hospital, Elim Rantepao Hospital Tanah Toraja and Polewali Mandar Hospital in South Sulawesi, Indonesia. The results showed that tenure had no significant effect on Organizational Citizenship Behavior with Sig. p-value 0.119 > 0.05 while the cultural value variable has a significant effect on Organizational Citizenship Behavior with Sig. p value 0.007 < 0.05. the conclusion of the research, there is no effect between the tenure of nurses on Organizational Citizenship Behavior, while tribal cultural value has an effect on Organizational Citizenship Behavior for nurses of Bugis, Makassar, Toraja and Mandar ethnicity groups.
Key words: OCB, Tenure, Cultural Values, Nurses, Ethnicity