Labor unions History 202 Labor movement 78 Industrial relations 57 Political activity 52 Working class 52 Organizing 35 more ... Employees 33 Politics and government 28 Social conditions 26 Collective bargaining 22 International labor activities 20 Economic aspects 19 Employment 19 Women labor union members 18 Labor 17 Globalization 16 Strikes and lockouts 16 Labor policy 14 Social aspects 14 African Americans 13 Women 12 Agricultural laborers 11 Coal miners 11 Officials and employees 10 Economic conditions 9 Labor disputes 9 Management 9 Migrant agricultural laborers 9 Automobile industry workers 8 less ...