Strikes and lockouts History 32 Working class 20 Industrial relations 17 Labor unions 17 Trade-unions 14 Coal mining 11 Labor disputes 8 Collective bargaining 7 Miners 7 Law and legislation 6 Railroads 6 Arbitration, Industrial 5 Case studies 5 Civil service 5 Coal miners 5 Agricultural laborers 4 Riots 4 Syndicalism 4 Collective labor agreements 3 Employee-management relations in government 3 Fiction 3 Labor laws and legislation 3 Labor policy 3 Metal-workers 3 Politics and government 3 Sources 3 Stevedores 3 Wages 3 Anarchism 2