You'll need some sort of streamlining. Some pension systems have the employer pay into a (private or public) pension fund. Others are based solely on the number of years you have worked. Yet others are based on the number of years you have lived in a country, or been a citizen of the country.

Being able to transfer pensions across borders would, perhaps, help (or it would create a carry trade in which pensions adjusted for high cost of living countries are taken to low cost of living countries, which may or may not be a good thing). But some harmonisation will be necessary to make the system practical.

- Jake

Friends come and go. Enemies accumulate.