Illegal immigrants don’t hold the most dangerous jobs in America. That kind of work pays a decent wage for the risk to life and limb, and undocumented workers are barred from those jobs. Yet there is plenty of hazard, risk and occupational injury for the uncounted millions of illegal immigrants doing the "merely dangerous" work no one else wants — without a pay premium from employers who take advantage of that labor pool, a Cornell University — Penn State University study reveals.