The article says that they can make up to $18/hr depending on how fast they work, and that minimum wage in the area is $8.25.
As for the benefits... lol, what year is it?
Immigrant workers have ridiculous working hours, low wages and obviously no benefits. I know second hand that sometimes over 10 people will live in a tiny apartment, because they need to save money to help the families they left behind. They can't complain and they need the money, so they get exploited, and nobody does a thing about it.