I have a much more specific example, which is substantial: it is the systematic branch tariff negotiation between trade unions and employers in Germany every year.
In German Tarifverhandlungen. It dates back to Bismarck. Chancellor Bismarck was no friend of the working class, but to get elected one more time he needed political support, and granted the Tarifverhandlung system/process in exchange. The process is still in force today.
Trade unions and employers from one sector, say automotive, sit together and agree on the salary grid/table for each job type. With this in place, less strikes happen, and a win-win system between employers and employees of some kind is in place.
Germany has other systematic negotiations for political matters between federal (Bund) and regional (Land) levels.
Similarly, the EU has three key institutions the European Commission, the European Council and the European Parliament. For important matters say article 90 Directives, a trialogue usually ends up resolving the differences.
A very positive attitude happens at last stage in a win-win-win because none of the three bodies wants to be seen guilty of blocking.
That's what happens when people operate in good faith for the perceived common interest
It is not only the Tarrifverhandlungen, the process where employees, employers and the state meet in tripartite negotiations. Bismarck also was instrumental for the Sozialgesetze, meaning a set of social security laws on which today's social security system in Germany (and elsewhere) is based upon.
People in countries around the world have this “strange idea” that somehow the Nordic countries have developed perfect societies and wish to copy them. I believe they are mistaken. It is not clear how much other countries can learn, if at all, from the Nordic experiences.