History 15 Labor unions 9 Employment 7 Industrial relations 7 Management 6 Women 5 Industrial policy 4 más ... Economic aspects 3 Industries 3 Law and legislation 3 Social conditions 3 Working class 3 Consolidation and merger of corporations 2 Economic conditions 2 Energy policy 2 Government ownership 2 Industrial revolution 2 Labor 2 Labor movement 2 Land use 2 Nacionalización 2 Planning 2 Political activity 2 Popular culture 2 Public-private sector cooperation 2 Social aspects 2 Technological innovations 2 Women foreign workers 2 World War, 1914-1918 2 Administración pública 1 menos ...