Who is most responsible for the exploitation of nail salon workers?

As the amount of nail salons in the United States has multiplied exponentially, the amount of nail salon workers exploited for their desperation to make ends meet has grown as well. A NY Times report notes that these workers are paid below the minimum wage, punished for the tiniest hiccups, and treated with little respect. Who do you think should be held responsible for their exploitation?

The NYTimes has more: http://tinyurl.com/l7o5bse