Earlier this year in Chicago, a bakery lost 800 workers to an immigration raid.
According to the Bloomberg the bakery was on the Northwest Side.
Cloverhill Bakery lost more than a third of its employees who did not have sufficient documentation.
The Swiss-based company makes the hamburger buns for McDonald?s as well as other chains.
A spokesman said the bakery is struggling to replace staff and is facing increasing pressure to raise wages.
The bakery has since lost $21 million due to the raid.