Just hours before the end of its spring session, the Illinois House of Representative passed a bill that would reform the state’s workers’ compensation system. The measure, which Gov. Pat Quinn is expected to sign, passed on a 62-43 vote. Proponents of the bill said it would save businesses between $500 million and $700 million per year by reducing medical provider rates by 30 percent. The bill establishes medical networks for claims, reduces the benefit period for carpal tunnel syndrome from 40 weeks to 28 and moves the burden of proof from employers to workers to show whether alcohol or drug use was a factor in a workplace accident.