# EU social security coordination and pension regulations > Live situation record from CLSTR: https://clstr.news/situations/eu-social-security-coordination-and-pension-regulations > Updated: 2026-10-01T17:00:52.000Z. Sources: 7. Developments: 2. The European Union has updated the legal framework for coordinating social security systems, specifically revising Regulations (EC) No 883/2004 and No 987/2009. This reform, which followed a decade-long process, aims to support the free movement of workers. While the European Parliament reached a compromise in July 2026, the reform faced criticism for prioritizing budgetary management and state interests over citizen rights. Luxembourg voted against the measure, securing a derogation for unemployment benefit transition periods despite calling the updates indispensable. In practice, social security coordination allows individuals who have worked across multiple borders—such as between Austria, Croatia, Serbia, and Bosnia-Herzegovina—to claim pension benefits based on accumulated insurance periods. Under these frameworks, countries do not provide a single unified pension; instead, each state evaluates claims and pays benefits for periods worked within its own jurisdiction. Eligibility is determined by where insurance was acquired rather than citizenship, often requiring individuals to provide proof of foreign employment to domestic pension funds. ## Timeline ### 2026-10-01: Cross-border pension claims and social security coordination Workers with employment history in multiple countries can claim pensions from each nation based on specific social security agreements and local regulations, regardless of their citizenship. 5 sources. https://clstr.news/cluster/cross-border-pension-claims-and-social-security-coordination ### 2026-09-29: European Union adopts revised social security coordination regulations The Council of the European Union has adopted revised social security coordination regulations to modernize the legal framework for worker mobility, despite opposition from Luxembourg. 2 sources. https://clstr.news/cluster/european-union-adopts-revised-social-security-coordination-regulations --- Cite as: EU social security coordination and pension regulations. CLSTR, https://clstr.news/situations/eu-social-security-coordination-and-pension-regulations