Work
Working in several EU countries: which social security applies
Employee or self-employed in more than one EU/EFTA country? The residence rule, employer rules, the A1 certificate and what the official page leaves out.
social security: articles for expats in Poland
Money
Pension claim in Poland with insurance in several countries
Worked in Poland and abroad? One claim filed in one country, how to defer, documents to attach and how foreign pensions reach Poland, per Powroty.
Work
Poland-Japan Social Security Agreement: What It Changes
Poland ratified a first social security agreement with Japan. How pension periods add up, double contributions end, and when it applies.