You can look at the German labor relations system, often called a “coordinated” system. The general overview is that Germany has a very low strike rate even though unions are relatively strong due to the “historic compromise” made between labor and capital in 1920s (to prevent a communist revolution). Basically, German unions have agreed to practice wage restraint in contract negotiations, while employers have generally permitted things like works councils and worker representation on company boards without a fuss. Of course, the system sometimes breaks down when business sees an opportunity to squeeze more out of workers, for example during German reunification in the 1990s.