The agreement covers cases in which adults come forward and say they were sexually abused decades earlier, the Arlington Heights Daily reports.
The archdiocese and the Illinois Department of Children and Family Services announced the new policy Wednesday, after difficult negotiations. Cardinal Francis George had reportedly been reluctant to provide information on old cases -- although last week he gave Jimmy Lago, the archdiocesan chancellor, the responsibility of dealing with new abuse allegations.
The department has the power to keep priests from working with children, even if they are involved in abuse claims that are too old to prosecute.
Notable deaths of 2014 [PHOTOS]