Sun-Woong Kim. 2001. A Study on the EPP in the Minimalist Program: the EPP as a PF Requirement. Studies in Modern Grammar 24, 47-66. The general aim of this paper is to explore the nature and role of the EPP within the Minimalist Program of generative grammar. This paper draws the conclusion that the EPP effect is captured by V to I head movement. Specifically, the EPP effect will be shown to be a side effect or epiphenomena of the head movement at PF (Chomsky 1999) plus an effect of configurationally defined θ-theory. This conclusion will be shown to remedy drawbacks of recent proposals of Kim (2000) and Jang (2000). This paper also attempts to reject the morphological feature checking approach to the EPP, whether it is a categorial feature checking or a Case feature checking. Furthermore, if head movement is a PF process, it can be concluded that the EPP effect is eventually a PF requirement that the Spec-T must be filled with some category that contains argumenthood in it. If the conclusions of this paper are on the right track, Lasnik`s (2000) doubt that only the EPP is configurational can be solved in a natural way.