The purpose of this study is to explore the client service experience of medicaid case managers in Korea and prepare health protection measures. The research method was in-depth interviews, and data was collected twice in total from 04 September to 06 September, 2023. The study participants were five medicaid care managers belonging to cities, counties, and districts across the country. As a result of this study, participants experienced problem behaviors such as unreasonable demands, verbal abuse and assault, a threatening environment, a passive attitude toward expressing emotions, and a defensive attitude when performing work. In addition, the participants appeared to be unaware of the organization’s management policy, the absence of a healing program for health disorders, and the follow-up management system to resolve client problem behavior. In conclusion, the organization must establish a safety and health management policy, establish a grievance handling committee, conduct safety and health education, investigate job stress and prepare countermeasures, prepare follow-up measures to protect health, and prepare a job stress relief program.