Context and Validation of the Korean Subjective Underemployment Scale (K-SUS): 한국의 불완전 취업 실태 및 주관적인 불완전 취업 척도 타당화

Abstract

Underemployment is a multidimensional construct that captures various suboptimal work statuses. Although recent economic depressions and insecure job markets in Korea have increased underemployment, no appropriate scale exists to measure underemployment in a Korean context. Therefore, the aim of this study was to translate the Subjective Underemployment Scales (SUS) into Korean and validate the Korean SUS (K-SUS) with a sample of 427 Korean employees. We found that a bifactor model fit the data best, suggesting a different internal structure from the English version. Scores from the K-SUS were also invariant across gender, age, income, and employment status. In addition, we found evidence for construct validity by relating scores from the K-SUS to similar constructs and indicators of well-being. Findings from the current study help describe Korean employees’ experiences of subjective underemployment and suggest how psychologists, employers, and policy makers can address structural and psychological issues related to underemployment.