The European Parliament has approved a significant revision of Regulation 883/2004, aiming to modernize social security coordination for 16 million mobile Europeans. Following approval by the European Council on 29 June, the reform seeks to clarify rules for cross-border workers and enhance administrative cooperation to reduce fraud. A major change involves unemployment benefits; if an employee works at least 22 consecutive weeks in their country of employment, that nation becomes responsible for their benefits. This represents a major structural shift for Luxembourg, which employs over 230,000 cross-border workers. While Luxembourg secured an extended transitional period—potentially delaying full implementation until 2028–2033—the reform also introduces common definitions for long-term care and stricter safeguards for posted workers to prevent abuse. Trade unions have welcomed the progress but warned against administrative hurdles that could disadvantage workers during the transition.