Swiss Senate Opens Crucial Debate on ‘Bilaterals III’ Treaty Package With the EU

Switzerland’s upper chamber, the Council of States, began a politically charged marathon debate this afternoon on the so-called “Bilaterals III” package—an interlocking set of accords intended to reset relations with the European Union after years of stalemate. The session, which started at 15:00 on 28 September 2026, will determine whether the framework moves forward or unravels under domestic pressure. From a global-mobility perspective, the stakes are high. The drafts include updated agreements on the free movement of persons, mutual recognition of professional qualifications and participation in EU research and student-exchange programmes. Centre-right senators have proposed last-minute amendments: an immigration levy on foreign workers, tighter wage-protection controls on EU service providers and a higher mandatory-referendum threshold for future labour-market concessions. Social-democratic and Green legislators warned that the changes would jeopardise Swiss companies’ ability to recruit EU talent quickly and undermine Switzerland’s access to Erasmus+ and Horizon Europe funding. “They are attacking wage protection and want to place an additional burden on families through an immigration levy,” party co-president Cédric Wermuth told reporters, accusing conservatives of “playing with fire” just as businesses crave certainty. Justice Minister Beat Jans, flanked by Foreign Minister Ignazio Cassis, reminded the chamber that 1.5 million EU citizens live or work in Switzerland and that seamless cross-border commuting underpins life-science clusters around Basel, Zurich and Lake Geneva. The Federal Council argues that failure to conclude Bilaterals III could prompt Brussels to curtail Swiss access to the EU’s digital single market and impose regulatory barriers on Swiss exports—moves that would hit internationally mobile staff and corporate transfer programmes. The debate is expected to run late into the night with the first procedural votes due around 22:00. Even if the Council of States reaches agreement, the more polarised National Council must still sign off, and a nationwide referendum in 2027 looks inevitable. Mobility managers should therefore prepare for a protracted period of political uncertainty, possible new compliance costs (immigration levy) and diverging social-security rules for posted workers.