Abstract

The COVID-19 pandemic significantly impacted the mental health of the population due to preventive measures against the virus’ spread and subsequent changes in the economic environment. Notably, the relationship between mental health and employment status was expected to vary. This study aimed to comprehensively analyze depression levels by employment status during the COVID-19 pandemic. The research utilized data from the Korea National Health and Nutrition Examination Survey (KNHANES) and analyzed individuals aged 19 to 64 from the years 2018, 2020, and 2022. The dependent variable was the prevalence of depressive disorders measured using the PHQ-9 scale, while the main independent variable was employment status, categorized into wage workers, self-employed individuals, and economically inactive populations. Logistic regression analysis was conducted to examine the associations. The analysis revealed that the prevalence of depressive disorders among the entire study population increased in 2020, the early phase of the pandemic, compared to 2018, but showed a declining trend in 2022. The prevalence was highest among the economically inactive population. In most models, wage workers and self-employed individuals had lower probabilities of depressive disorders compared to the economically inactive population in 2018 and 2020, while no significant differences were observed across employment statuses in 2022. These findings suggest that the COVID-19 pandemic had varying impacts on depression levels depending on employment status, with the economically inactive population emerging as a particularly vulnerable group in terms of mental health. This underscores the need for targeted support policies for such groups during national crises like the COVID-19 pandemic. The results provide foundational data for managing mental health in disaster scenarios.