Psychometric Properties of a Short Version of Effort-Reward Imbalance in Blue-Collar Workers

Sunday, 27 July 2014: 1:35 PM

Won Ju Hwang, MPH, PhD, RN
College of Nursing Science, Kyung Hee University, Seoul, South Korea
OiSaeng Hong, PhD, RN, FAAN
School of Nursing, University of California, San Francisco, San Francisco, CA

Purpose: The purposes of this study were to test psychometric properties of a short version of Effort Reward Imbalance (ERI) questionnaire and to identify its relationship with job demand in blue-collar workers.

Methods: In this study, we sought to translate the ERI short form into Korean and to examining the psychometric properties in a sample of 250 blue-collar workers who are working at small companies. The internal consistency reliability, structural validity, and criterion (content) validity were analyzed.

Results: The Cronbach’s alpha for the three scales were 0.75, 0.74, and 0.72, respectively. Confirmatory factor analysis showed a good fit of the data with the theoretical structure (RMSEA = 0.07, CFI = 0.84). Evidence of criterion validity was demonstrated. A significant synergistic interaction effect of ERI and overcommitment on Job stress (demand) was observed (synergic effect 7.35, CI 2.89-18.52).

Conclusion: The short version of the ERI questionnaire demonstrated good psychometric properties with Korean blue-collar workers. This supports further use of the instrument in future research and practice for working population in Korea.