This study explored the characteristics of training system of SK Energy which have developed its employees\' capabilities in foreign market as well as in domestic market, and suggested their policy implications for human resource management. The components of training system were training objective, curriculum, training method, training evaluation, and training infrastructure. The results of the study were as follows: First, training objective of SK Energy was linked to organizational strategy; Second, training curriculum was designed to achieve training objective. SK Energy focused on values-training to foster ‘SUPEX Leaders’ equipped with SK Foundation Spirit and its corporate culture. SK Energy provided leadership training for those who need leadership skills, especially for team leader- and executive-level positions who play a role as a core leader. SK energy figures out that leadership training programmes lead to organizational performance via fostering job ability; Third, training method was classified into off-line, on-line, and blended learning and was operated appropriately according to curriculum. Fourth, SK established well-organized infrastructure, thus it was able to lead to effective learning; Finally, the theoretical and practical implications of the results were discussed.