OCCUPATION AND HEALTH ›› 2026, Vol. 42 ›› Issue (15): 2032-2037.

• Treatise—Occupational Health and Occupational Diseases • Previous Articles     Next Articles

Study on the mediating effect of psychological resilience between occupational stress and depressive symptoms in front-line workers in thermal power generation industry in Shanxi Province

JING Jiahui1, GUO Zhixi1,2(), MA Xiaodong3, QIN Wenyan3   

  1. 1 School of Public HealthShanxi Medical University,TaiyuanShanxi 030001, China
    2 Supervision and Inspection Center of Shanxi Provincial Health CommissionTaiyuanShanxi 030045, China
    3 Shanxi Provincial Center for Disease Control and PreventionTaiyuanShanxi 030012, China
  • Received:2025-09-09 Revised:2025-10-08 Online:2026-08-01 Published:2026-07-16
  • Contact: GUO Zhixi
  • About author:GUO Zhixi,E-mail:1390536024@qq.com

Abstract:

Objective To understand the level of psychological resilience,occupational stress and depression symptoms of front-line workers in the thermal power generation industry in Shanxi Province,analyze the mediating effect of psychological resilience between occupational stress and depression symptoms,so as to provide a scientific basis for improving the physical and mental health of workers. Methods From 2023 to 2024,according to a multi-stage sampling method,a cross-sectional survey was conducted among 899 frontline workers from 2 large enterprises,4 medium-sized enterprises,and 12 small-sized enterprises in the thermal power generation industry in Shanxi Province using the Connor-Davidson resilience scale(CD-RISC-10),the core occupational stress scale(COSS),and the patient health questionnaire(PHQ-9),and the data were analyzed. Results The psychological resilience score[MP25P75)] of 899 survey subjects was 29(23,33)points. The occupational stress score[MP25P75)] was 40(36,47)points,and the detection rate of occupational stress was 16.69%(150/899). The score of depressive symptoms was 6(4,9)points,and the detection rate of depressive symptoms was 66.52%(598/899),consisting of mild cases accounting for 48.16%(433/899),moderate 13.46%(121/899),moderate-severe 4.12%(37/899) and severe 0.78%(7/899). The psychological resilience scores of frontline workers with different genders,actual average monthly income(yuan),respiratory symptoms(such as cough,chest pain,shortness of breath,etc.),proactive acquisition of health knowledge,weekly physical exercise,and satisfaction with unit welfare were compared,and the differences were statistically significant(all P<0.05). The comparison of the detection rates of occupational stress among frontline workers of different genders,actual average monthly income(yuan),average weekly working hours(h),night shift work,shift work,respiratory symptoms(such as cough,chest pain,shortness of breath,etc.),proactive acquisition of health knowledge,and satisfaction with unit welfare showed statistically significant differences(all P<0.05). The differences in the detection rates of depression symptoms among frontline workers with different education levels,average weekly working hours(h),alcohol consumption,respiratory symptoms(such as cough,chest pain,shortness of breath,etc.),active access to health knowledge,weekly physical exercise,and satisfaction with unit welfare were statistically significant(all P<0.05). The psychological resilience of front-line workers in the thermal power generation industry was negatively correlated with occupational stress(r=-0.301,P<0.01),psychological resilience was negatively correlated with depressive symptoms(r=-0.434,P<0.01),and occupational stress was positively correlated with depressive symptoms(r=0.475,P<0.01). The psychological resilience of front-line workers in the thermal power generation industry had a significant mediating effect on occupational stress and depressive symptoms,with a mediating effect value of 0.041,accounting for 17.60% of the total effect. Conclusion The detection rate of depressive symptoms in front-line workers in the thermal power generation industry in Shanxi Province is high,and psychological resilience has a partial mediating effect between occupational stress and depressive symptoms. Improving the psychological resilience level of frontline workers in the thermal power generation industry can help reduce their occupational stress and depression symptoms.

Key words: Thermal power generation industry, Psychological resilience, Occupational stress, Depressive symptoms, Mediation effect, Frontline workers

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