Although short sleep is associated with increased risk of morbidity and has been shown to vary by industry of employment, little is known relationship between work and sleep in Korea. Using a nationally representative sample of Korean adults workers (n=9,012, age≥19yr) in the Korea National Health and Nutrition Examination Survey from 2008-2011, we estimated prevalence of short sleep duration (<6hr) and investigated the related factors with short sleep applying logistic regression with SAS 9.2. The prevalence of short sleep was 43.0% among Korean workers. The results presented that male (odd ratio=1.26(95% CI=1.12-1.41)), old age (1.34(1.03-1.76)), divorced or separate marital status (1.54(1.24-1.90)), high school education level (0.87(0.76-0.99)), stress (1.43(1.28-1.61)), occupation, and long working hours (1.74(1.42-2.14)) were significantly associated with short sleep. Our finding showed that working conditions were related to short sleep, there should be considerations of working conditions to intervene short sleep such as modulating working hours.