Labor unions History 272 Labor movement 117 Working class 108 Political activity 75 Industrial relations 73 Politics and government 34 more ... Strikes and lockouts 21 Labor 20 Labor policy 19 Social conditions 19 Employees 18 Employment 18 Organizing 16 Economic conditions 15 Automobile industry workers 14 Labor laws and legislation 13 Officials and employees 13 Women labor union members 13 Women 12 Womyn 12 Agricultural laborers 10 Coal miners 10 Economic aspects 10 International labor activities 10 Labor leaders 9 Management 9 Race relations 9 Socialism 9 Stevedores 9 less ...