Background Although adverse childhood experiences (ACEs) in adolescents are partially presented at the national level, few studies of ACEs in working adolescents by comparing them with those who are not working that provide an opportunity for international comparison have been conducted. Objective This study was aimed to compare the ACEs of working and nonworking adolescents. Methods This study was conducted in Turkey with 213 working adolescents enrolled in the vocational training center and 457 nonworking adolescents enrolled in high schools between the ages of 15 and 18. Results As a result of the study, the prevalence and incidence of psychological and physical ACEs and neglect in nonworking adolescents were found to be higher than the prevalence and incidence in working adolescents. Conclusions Research should be conducted to define the awareness of neglect and abuse among working and nonworking adolescents and to explain the reasons why nonworking adolescents experience more ACEs.