Changing Leadership Style in the Vietnamese Commercial Banks Before and After Vietnam Joins the WTO

This study seeks to examine the changes in leadership style in four state-owned commercial banks in Vietnam of Vietcombank, Vietinbank, BIDV and Agribank before and after Vietnam joins the WTO, from 2007 to 2015. The study used OCAI culture diagnostic models to assess four different leadership styles using questionnaires and multivariate analysis techniques (paired t test, t test, ANOVA). The research result from 1056 employees in Vietnamese banks shows that there is a shift in the leadership style between two periods before and after Vietnam joins the WTO. The study also shows a significant difference in the change level of the leadership style between banks that have increased competitive and creative factors. This conversion trend is strongly increasing as Vietnam is about to participate in the TPP.