소방공무원의 수면의 질, 피로수준, 직무스트레스가 조직몰입에 미치는 영향: 건강증진행위의 매개효과를 중심으로

This study aimed to comprehensively analyze the direct and indirect effects of sleep quality, fatigue level, and occupational stress on organizational commitment among firefighters, and to verify the mediating effect of health-promoting behaviors. A total of 138 firefighters working at two fire stations in City G participated in the study, and data were collected using a structured self-report questionnaire from May 1 to May 15, 2025. The collected data were analyzed using IBM SPSS 27.0 for descriptive statistics, independent t-tests, one-way ANOVA, Pearson’s correlation, and multiple regression analyses. The mediating effect was verified using the three-step regression model by Baron and Kenny (1986), the Sobel test, and bootstrapping techniques. The results showed that organizational commitment was significantly negatively correlated with fatigue (r=- .38), sleep quality (r=- .24), and occupational stress (r=- .34), and positively correlated with health-promoting behaviors (r= .40). Fatigue and occupational stress had partial mediating effects through health-promoting behaviors on organizational commitment (R²=26%, 27%, respectively), while sleep quality was found to be fully mediated by health-promoting behaviors (R²=22%). The statistical significance of the mediating effects was further confirmed through bootstrapping. This study empirically demonstrated the mediating role of health-promoting behaviors in enhancing organizational commitment among firefighters. These findings can serve as foundational data for developing organizational-level health management strategies to mitigate the negative effects of fatigue, poor sleep quality, and occupational stress.