The article discusses how collective bargaining varies between countries in terms of who's involved, where it happens, and how agreements are extended. It explores how collective bargaining affects businesses, economies, and workers by looking at wages, job security, and work control. Research finds that the impact of collective bargaining on these factors depends on the specific rights and structures in each country and sector. While in many places, collective bargaining used to help reduce wage gaps, it's now less effective due to weakening labor power compared to management.