Labor unions 1,866 History 875 Labor movement 323 Political activity 258 Working class 247 Industrial relations 197 Politics and government 146 more ... Employees 106 Organizing 90 Labor 87 Women labor union members 85 Strikes and lockouts 84 Collective bargaining 80 Employment 79 Social conditions 78 Labor policy 68 Officials and employees 62 Labor laws and legislation 60 Economic conditions 57 International labor activities 54 Coal miners 53 Law and legislation 52 Labor unions and communism 49 Women 49 Economic aspects 47 Social aspects 43 African Americans 42 Agricultural laborers 42 Socialism 42 Labor leaders 35 less ...