Labor unions History 205 Labor movement 79 Industrial relations 57 Political activity 54 Working class 52 Organizing 35 more ... Employees 33 Politics and government 30 Social conditions 27 Collective bargaining 22 International labor activities 22 Economic aspects 20 Employment 20 Women labor union members 18 Globalization 17 Labor 17 Strikes and lockouts 16 Labor policy 15 Social aspects 14 Women 14 African Americans 13 Labor laws and legislation 13 Agricultural laborers 11 Coal miners 11 Law and legislation 11 Officials and employees 10 Economic conditions 9 Labor disputes 9 Labor market 9 less ...