The purpose of this study is to conceptualize a phenomenon of workplace wang-tta and develop a scale to measure it. The concept of workplace wang-tta was defined and items to measure it were developed through individual interviews with 9 victims and related literature review. Based on the responses of 350 employees collected from a variety of work fields in South Korea, analyses of the factor structure and reliability of this new instrument indicated that the workplace wang-tta scale is a reliable instrument composed of 3 factors: personal disregard, competence derogation, and improper work processes. The 3-factor structure received further support from confirmatory factor analyses (CFA) on a sample of 351 employees not used in exploratory factor analyses (EFA). A series of validation analyses revealed that the workplace wang-tta scale has good psychometric properties (i.e. reliability and validity). In terms of external validation, the scale was also significantly and moderately correlated with the perceptions of fair interpersonal treatment while lowly correlated with extrinsic organizational commitment, supporting convergent and discriminant validity. Moreover, the workplace wang-tta was associated with greater psychological distress supporting concurrent validity. The value of this study lies in increasing deep understanding of the phenomenon of workplace wang-tta, as well as providing a valid, reliable and easy-to-use instrument for the measurement of workplace wang-tta.