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Illinois construction inspector or materials tester prevailing wage, county by county
A construction inspector or materials tester's prevailing wage on Illinois public works runs from $82.11 an hour in Will County to $89.44 in Carroll County, base wage plus fringe benefits. The median county is $82.11.
Main construction inspector or materials tester classification in each county (Material tester i), IDOL posting for work on or after October 19, 2026. IDOL prints no total; each figure is base wage plus fringes. Checked October 24, 2026.
How much does a construction inspector or materials tester make on prevailing wage in Illinois?
4 groups of counties with identical rates and 1 county with rates of their own, highest main rate first, each split into wage and fringe benefits on one scale. The table below lists which counties are in each group.
- Ogle County group3 counties · Material Tester I$89.44
- Winnebago County group2 counties · Material Tester I$89.40
- Kankakee County1 county · Material Tester I$84.79
- Cook County group5 counties · Material Tester I$82.11
- Kane County group4 counties · Material Tester I$82.11
Which counties pay which rate
| Counties | Main classification | Base + fringes | Base |
|---|---|---|---|
| Ogle County group, 3 counties: Carroll, Lee, Ogle | Material Tester I | $89.44 | $53.74 |
| Winnebago County group, 2 counties: DeKalb, Winnebago | Material Tester I | $89.40 | $52.64 |
| Kankakee County | Material Tester I | $84.79 | $48.70 |
| Cook County group, 5 counties: Cook, DuPage, Grundy, Lake, Will | Material Tester I | $82.11 | $43.00 |
| Kane County group, 4 counties: Boone, Kane, Kendall, McHenry | Material Tester I | $82.11 | $43.00 |
4 groups of counties with identical IDOL rates, and 1 county with rates of its own.
These are journeyworker rates. IDOL's county schedules list journeyworker and foreman rates only; apprentice pay follows the registered apprenticeship program's standards.
Questions about Illinois construction inspector or materials tester pay
What is the construction inspector or materials tester prevailing wage in Cook County?
$82.11 an hour: a $43.00 base wage plus $39.11 in fringe benefits, under IDOL's county schedule. Overtime and every construction inspector or materials tester classification in Cook County.
Does construction inspector or materials tester prevailing wage include fringe benefits?
Yes. In Cook County the $82.11 total is a $43.00 base wage plus $39.11 in fringe benefits, about 48% of the total. The employer owes the full amount for every hour worked.
Do apprentice construction inspector or materials testers get this rate?
IDOL's county schedules list journeyworker and foreman rates only. Apprentice pay follows the registered apprenticeship program's standards.
Why do some counties have the same construction inspector or materials tester rate?
IDOL often publishes the same construction inspector or materials tester rates for several counties. Across Illinois, the 15 counties with a construction inspector or materials tester rate fall into 5 distinct sets of rates, and 4 of those sets are shared by more than one county; the largest covers 5 counties (the Cook County group).
Which county pays construction inspector or materials testers the most in Illinois?
Carroll County, at $89.44 an hour for the main classification. The lowest is Will County at $82.11, and the median county is $82.11.