Minimum Wage Increase Linked to Higher Alcohol Use Disorder Risk in South Korea

Overview

A 2018 minimum wage hike in South Korea was associated with a significant increase in potential alcohol use disorder risk and hazardous drinking among low-wage workers. The effects were particularly notable among men and older workers aged 50-64, with spillover impacts extending to those earning up to 20% above the minimum wage.

Background

Minimum wage increases have been linked to various health outcomes, including reduced distress and improved diet, but their effects on substance use behaviors remain unclear. Prior research has shown mixed results regarding alcohol consumption following wage hikes, often focusing on youth or education-based subgroups rather than clinically relevant alcohol use disorders. This study leverages a quasi-experimental design and longitudinal data from the Korea Welfare Panel Study to assess whether the 2018 minimum wage increase influenced the risk of alcohol use disorder among affected workers.

Data Highlights

Key Findings

• The 2018 minimum wage increase was associated with a 1.9% rise in the high-risk category for alcohol use disorder among workers earning below the minimum wage.
• Hazardous alcohol consumption increased by 3.6% in the treatment group post-wage hike.
• Men and workers aged 50-64 showed more pronounced increases in alcohol-related risks.
• Spillover effects were observed in workers earning up to 20% above the minimum wage.
• The study utilized a robust difference-in-differences quasi-experimental design with longitudinal panel data.

Clinical Implications

Clinicians and public health practitioners should be aware that economic policies such as minimum wage increases may inadvertently elevate substance use disorder risks in vulnerable populations. Targeted screening and integrated interventions for alcohol use disorder are warranted, especially among older men and low-wage workers. Public health campaigns should accompany wage policy changes to mitigate unintended adverse effects on alcohol-related health outcomes.

Conclusion

The 2018 minimum wage hike in South Korea was linked to increased risk of potential alcohol use disorder and hazardous drinking among low-wage workers, highlighting the need for integrated public health strategies alongside economic policy reforms.

References

1. Examining the Effects of Minimum Wage Increases on Alcohol Use Disorder: A Quasi-Experimental Analysis in South Korea