This chapter explores the pragmatic effects of overt subject expression in Korean, focusing on first and second-person subjects. It examines how the presence of these subjects, when omission is grammatically more prevalent in Korean, contributes to meaning beyond mere grammatical function. The analysis explores the interplay between indexical and interactional functions of overt subjects, specifically investigating how overt subjects can serve multifaceted pragmatic purposes, such as emphasising responsibility, seeking confirmation and negotiating credit attribution within the flow of conversation. Drawing on examples from various contexts, the chapter demonstrates how understanding these pragmatic nuances enhances overall pragmatic literacy in Korean. By connecting subject expression to broader concepts of language use and comprehension, this work contributes to a deeper understanding of Korean linguistics, offering insights valuable for native speakers, language learners and researchers exploring the intricate relationship between Korean language structure, pragmatics and communication in both spoken and written contexts.