Activation 1 Expert Interview Hartz IV 1 Labour Market 1 Long-term Unemployment 1 Politics 1 Qualitative Social Research 1 Social Inclusion 1 Social Policy 1 Sociology 1 Sociology of Work and Industry 1 Wohlfahrtsstaat; Arbeitsmarkt; Hartz IV; Aktivierung; Langzeitarbeitslosigkeit; Soziale Teilhabe; Qualitative Sozialforschung; Experteninterview; Arbeit; Politik; Sozialpolitik; Arbeits- und Industriesoziologie; Soziologie; Welfare State; Labour Market; Activation; Long-term Unemployment; Social Inclusion; Qualitative Social Research; Expert Interview; Work; Politics; Social Policy; Sociology of Work and Industry; Sociology 1 Work 1