Dozens of Filipino workers who helped build stadiums that hosted the 2022 FIFA World Cup in Qatar filed a lawsuit on Thursday claiming U.S. construction firm Jacobs Solutions Inc subjected them to dangerous and inhumane conditions.

The nearly 40 plaintiffs in a complaint filed in federal court in Denver, Colorado, said Jacobs and several subsidiaries that oversaw the construction projects forced workers to live in cramped, dirty barracks and work up to 72 hours straight in blistering heat without food and water.

The plaintiffs also claim they were not paid all of their wages and had their passports confiscated, barring them from finding new jobs or returning home to the Philippines.

Dallas, Texas-based Jacobs did not immediately respond to a request for comment.

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