A family member of mine, an attorney, does exactly this for a living - he sues employers for back wages on behalf of the immigrants. In Kalifornia.
He's a flaming moonbat, incredibly brilliant, and chooses to spend his law degree doing this, on principle, versus making a crapload of money, which he could considering the ivy league law degree he has.
Eh, he's funny and I love to see him on holidays. We avoid political talk.