The Department of Labor ascertains the prevailing rate of wages in the month of June each year. Please forward all applicable survey forms (see links below), certified payrolls, and other information you believe is relevant in this process of ascertainment for consideration pertaining to wages paid on public works to:

Illinois Department of Labor
ATTN: Administrator, Conciliation and Mediation Division
900 S Spring Street
Springfield, IL 62704​​

Survey Forms