Industrial social work aims to help individuals and groups adapt to their work situation. It started in Europe in the 1960s as personnel social work to address social problems arising from mismatches between employees and their work. Industrial social work has two levels - preventive/developmental and curative. The preventive level includes education programs on work-related topics and health programs for workers. Social work approaches like case work, group work, community organization, social action and research can be applied. Social workers need specialized training in human problems, knowledge of work conditions, workers' lives, and community resources, as well as skills like professional secrecy and cooperation.