Historical research shows that the number of children of migrant workers who had to live in hiding in Switzerland between 1949 and 1975 is much higher than previous estimated.

Up to 50,000 children – about four times more than assumed - lived in inhumane conditions according to a study by Toni Ricciardi from the University of Geneva, the NZZ am Sonntag newspaper says.

In total, the number of children affected by the restrictive immigration rules – as they had to stay behind with the grandparents or other relatives in the country of origin, particularly in Italy, Spain and Portugal - is as high as 500,000, Ricciardi is quoted as saying.

The findings are part of a wide-ranging research project on welfare and coercion policiesExternal link in Switzerland.

The new estimation is based on official statistics on immigration, birth rates and other data.

There are no official statistics about the migrant children who lived in Switzerland illegally because files held by the authorities were often destroyed, according to the newspaper report.

Under the seasonal workers status in force between 1934 and 2002 children, migrant workers in Switzerland were not permitted to bring along their families.

More

More

The Italian seasonal workers in Switzerland

This content was published on May 21, 2016 May 21, 2016 Following the Second World War and until 2002, hundreds of thousands of seasonal workers came from Italy to Switzerland, where they were often...

In compliance with the JTI standards

More: SWI swissinfo.ch certified by the Journalism Trust Initiative