Madigan's call to regulate workers' compensation insurance rates comes as Rauner has sought standards to prove an injury happened on the job and tougher restrictions on how much a worker is paid for an injury. Democrats, who have said that would harm the middle class, contend the insurance industry hasn't passed along premium savings in the wake of changes made in 2011. They note companies are largely free to set their own rates. Insurance companies argue that limiting their ability to set rates would decrease competition and could drive up premiums.