Swiss voters headed to the polls on Sunday to decide whether to impose a population cap of 10 million people by 2050, in a closely watched referendum that has reignited debate over immigration, economic growth and the country’s relationship with the European Union.
The proposal, backed by the right-wing Swiss People’s Party, seeks to limit Switzerland’s population growth, arguing that rapid increases in the number of residents are placing unsustainable pressure on housing, transport systems, public services and the environment.
Supporters describe the measure as a “sustainability initiative,” while opponents have branded it a “chaos initiative,” warning that it could damage Switzerland’s economy and undermine its ties with the EU.
Switzerland’s population has risen sharply from about 7.3 million in 2002 to approximately 9.1 million today, with more than a quarter of residents born outside the country.
Under the proposal, the Swiss government would be required to begin taking measures once the population reaches 9.5 million. Such measures could include restrictions on asylum admissions and limitations on family reunification rights for foreign workers.
The initiative also stipulates that if Switzerland’s population exceeds 10 million, the government would have to terminate international agreements that contribute to population growth, including arrangements guaranteeing the free movement of people with the European Union.
The prospect has alarmed business groups and political leaders who fear Switzerland could jeopardise its access to European labour markets and strain relations with its largest trading partner.
“We could face challenges in our relations with the European Union,” said Rudolf Minsch, chief economist at Switzerland’s business association, Economiesuisse, noting that stable ties with Brussels remain critical for trade and economic growth.
Swiss employers have also expressed concern about labour shortages, particularly in sectors heavily reliant on foreign workers, including healthcare, hospitality and elderly care.
Opinion polls ahead of the vote suggested a tightly contested outcome, with voters narrowly leaning towards rejecting the proposal, although a significant number remained undecided.
The referendum has exposed deep divisions within Swiss society over immigration and national identity. Supporters argue that unchecked population growth is contributing to housing shortages, overcrowded infrastructure and rising public costs, while critics say migrants are being unfairly blamed for broader economic and policy challenges.
For opponents, the vote is about more than population numbers. They argue that limiting immigration could leave Switzerland isolated at a time of growing geopolitical uncertainty and economic volatility.
Erizia Rubyjeana
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