The purpose of this paper is to empirically examine the effect of the Leadership Styles, Transformational leadership Style and Transactional leadership Style, on the Employee Readiness to Change in the public sector in Yemen. The results of this study were based on the sample of 387 questionnaires used for the final analysis collected from the employees of Yemeni public sector using a self-administered method. The partial least square structural equation Modeling, Smart PLS 3.0 was employed in analyzing the data of the study. The results showed that Transformational leadership Style is significantly associated with Employee Readiness to Change while Transactional leadership Style is otherwise. The current study provides valuable explanations the determinants of Readiness to Change on for the policy makers, public sector leaders and academicians.