SPRINGFIELD – State lawmakers will vote on reforms to trim public sector pension costs when they return to Springfield for a special session this month, but the legislation is limited in scope and does not include one of Gov. Pat Quinn's key proposals for addressing Illinois' most serious budget challenge.

House Speaker Michael Madigan, a Chicago Democrat, has decided to allow the vote on Aug. 17, The (Springfield) State Journal-Register reported Tuesday.

"The speaker has determined he would call it," Madigan spokesman Steve Brown said.