Previous studies on Korean relative clauses (RC) show that, with respect to processing, object-extracted relative clauses (ORC) are more difficult to process at the head noun than subject-extracted relative clauses within temporarily ambiguous contexts. ORCs, however, are predicted by experience-based processing models to incur a greater processing cost during early processing stages at the RC verb, since it is a likely locus of disambiguation for RCs in Korean, and because ORCs are a less frequent structure. Consequently, the current study investigates whether processing difficulty for ORCs manifests itself at the RC verb using eye-tracking methods, a simple sentence structure and a sentential-decision task. The results revealed significantly increased go-past reading times for ORCs at the RC verb. We believe this is a result of a less frequent structure being more difficult to parse during disambiguation. Accordingly, experience-based models of processing can accurately predict difficulty for ORCs in Korean.