25 ILCS 115/1.7
During each month of the fiscal year beginning July 1, 2011, every member of the 97th General Assembly is mandatorily required to forfeit one day of compensation. The State Comptroller shall deduct the equivalent of 1/261st of the annual salary of each member of the 97th General Assembly from the compensation of that member in each month of the fiscal year. For purposes of this Section, annual compensation includes compensation paid to each member by the State for one year of service pursuant to Section 1, except any payments made for mileage and allowances for travel and meals. The forfeiture required by this Section is not considered a change in salary and shall not impact pension or other benefits provided to members of the General Assembly.
25 ILCS 115/1.7