Illinois prevailing wage rates

Two kinds of prevailing wage in Illinois

Federal (Davis-Bacon). Construction contracts over $2,000 paid for or assisted with federal money pay the rates in a federal wage determination for the county and construction type. Those rates are on this site, county by county, and the weekly certified payroll is usually the WH-347.

State (Illinois law). State and local public works pay the state's rates under Prevailing Wage Act, 820 ILCS 130 [820 ILCS 130]. The agency is the Illinois Department of Labor (IDOL).

A project covered only by Davis-Bacon is not filed in the Illinois portal; you send the federal weekly certified payroll to your prime or agency. When a project is covered by both laws, you file both.

Illinois prevailing wage law at a glance

Which projects are covered

• Public works means all fixed works constructed or demolished by any public body, or paid for wholly or in part out of public funds, including projects financed by bonds, grants and loans, and maintenance work [820 ILCS 130/2].
• IDOL notes a project does not have to be for public use to be covered [IDOL FAQ].

How state rates are set

IDOL sets rates by county and publishes them each year by July 15 [820 ILCS 130/9]. If IDOL revises a rate, the revised rate applies to contracts already underway [IDOL FAQ]. Current rates: IDOL current prevailing rates.

Overtime

Contractors pay the overtime and holiday rates on IDOL's schedule for each classification [820 ILCS 130/3].

Davis-Bacon wage rates by county in Illinois

Select a county for its federal wage determinations by construction type (building, residential, heavy, highway), with every classification's base and fringe rate.

• Adams County
• Alexander County
• Bond County
• Boone County
• Brown County
• Bureau County
• Calhoun County
• Carroll County
• Cass County
• Champaign County
• Christian County
• Clark County
• Clay County
• Clinton County
• Coles County
• Cook County
• Crawford County
• Cumberland County
• De Kalb County
• De Witt County
• Douglas County
• Du Page County
• Edgar County
• Edwards County
• Effingham County
• Fayette County
• Ford County
• Franklin County
• Fulton County
• Gallatin County
• Greene County
• Grundy County
• Hamilton County
• Hancock County
• Hardin County
• Henderson County
• Henry County
• Iroquois County
• Jackson County
• Jasper County
• Jefferson County
• Jersey County
• Jo Daviess County
• Johnson County
• Kane County
• Kankakee County
• Kendall County
• Knox County
• La Salle County
• Lake County
• Lawrence County
• Lee County
• Livingston County
• Logan County
• Macon County
• Macoupin County
• Madison County
• Marion County
• Marshall County
• Mason County
• Massac County
• McDonough County
• McHenry County
• McLean County
• Menard County
• Mercer County
• Monroe County
• Montgomery County
• Morgan County
• Moultrie County
• Ogle County
• Peoria County
• Perry County
• Piatt County
• Pike County
• Pope County
• Pulaski County
• Putnam County
• Randolph County
• Richland County
• Rock Island County
• Saline County
• Sangamon County
• Schuyler County
• Scott County
• Shelby County
• St Clair County
• Stark County
• Stephenson County
• Tazewell County
• Union County
• Vermilion County
• Wabash County
• Warren County
• Washington County
• Wayne County
• White County
• Whiteside County
• Will County
• Williamson County
• Winnebago County
• Woodford County

Federal data: SAM.gov general wage determinations, fetched October 7, 2026. For state rates, use the agency link above.

Certified payroll in Illinois

Monthly certified payroll in IDOL's portal, by the 15th. By the 15th of each month, for the month before (only months with work). System: IDOL Prevailing Wage Portal.

For Illinois projects LevelWage prepares the WH-347 package with the federal checks. The IDOL import template is planned and not available yet, so today you file in IDOL's portal yourself.

Read the full Illinois certified payroll guide →