This study investigated the prevalence of client violence toward child protection workers and its negative impacts on the work attitudes of those workers compared with community service workers in South Korea. This study is based on the assumption that child protection workers are more vulnerable to violence than are community service workers because of the unique characteristics of the roles they play. Results of the data, drawn from a sample of 413 child protection workers and community service workers, found that client violence was more prevalent against child protection workers and that the negative impacts of this violence on work attitudes were more clearly highlighted for child protection workers. Based on the results of this study, implications for preventing client violence and lessening its negative impacts on work attitudes of child protection workers were identified.