They're called modern-day slaves, and their numbers are growing in the Netherlands. It's believed that thousands of foreigners are being exploited by Dutch market gardens, cleaning contractors and construction companies. They're locked up, swindled and intimidated. Dutch labour inspectors are becoming increasingly concerned because the illegal economy behind this exploitation is continuing to grow.
There are no hard figures on the number of foreign employees who are being exploited. The number of victims who have been found by the police has doubled in recent years. There were 405 in 2004, and 993 in 2010. More and more of the perpetrators are also being prosecuted. The number of judicial investigations rose from just 2 in 2007 to 9 in 2011.