WSI-Arbeitskampfbilanz 2013 reports. On average, there have been 16 strike days per year per thousand workers; that is more than in the Netherlands (9) but far less than in countries like France, Canada, Denmark, Finland and Belgium.
Over the past ten years, there has been a shift from manufacturing to the services sector. Researcher Heiner Dribbusch sees a correlation between strikes and fragmentation of contract negotiations. In addition, he points to growing discontent in low-wage sectors. In North Rhine-Westphalia, workers have succeeded in raising low wages in the security sector, thanks to the actions of airport security workers.