Purpose: The purpose of this study is to validate the Korean version of the thriving at work measurement by Porath "et al." (2012). Design/methodology/approach: After translating the thriving at work measurement into Korean, the researchers assessed the validity and reliability of the measurement in a Korean working context using two different samples. In Study 1, the study validated the translated measurement using Rasch's (1960) model, exploratory factor analysis and a reliability test with a sample of 322 employees. In Study 2, the study conducted a confirmatory factor analysis, a reliability test and a convergent and discriminant validity test using a sample of 187 employees. Findings: Based on the analyses, this paper concluded that thriving at work has a two-factor construct and eight-item thriving at work measurement was better than the original 10-item measurement. The eight-item measurement demonstrated good discriminant and convergent validity. Originality/value: This study validated the thriving at work measurement in a Korean context using Rasch's (1960) model from the item response theory perspective.