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Illinois · Construction Inspector & Materials Tester · 4 counties
Construction Inspector & Materials Tester prevailing wage, Kane County group, Illinois (4 counties)
IDOL sets the same construction inspector or materials tester rates, row for row, in 4 counties: Boone, Kane, Kendall and McHenry. Every figure on this page applies in each of them.
$82.11an hour, base wage + fringe benefits (our sum) · Material Tester I
$43.00 base wage + $39.11 fringe benefits
On Illinois public works in each of these 4 counties, a construction inspector or materials tester working as Material Tester I must be paid at least $82.11 an hour: a $43.00 base wage plus $39.11 in fringe benefits for health and welfare, pension, vacation, training and other insurance. IDOL lists each part but prints no total, so $82.11 is our sum of its columns. Overtime after 8 hours a day, Monday to Friday, is 1.5 times the base wage.
IDOL's schedule for each of these counties, posted October 19, 2026, for work performed on or after October 19, 2026. Checked against labor.illinois.gov on October 24, 2026.
IDOL lists 2 construction inspector or materials tester rates for each of these counties, from $82.11 to $87.11 an hour. See all of them.
Base wage and fringe benefits: $43.00 + $39.11
The base wage is the taxable hourly wage. The other lines are the fringe benefits IDOL lists for each hour: health and welfare, pension, vacation, training, and "other insurance", which IDOL's legend defines as the "employer hourly cost for any other type(s) of insurance".
| Base wage (taxable) | $43.00 |
| Health and welfare | $17.23 |
| Pension | $20.97 |
| Training | $0.91 |
| Base + fringes (our sum; IDOL prints no total) | $82.11 |
IDOL leaves the other insurance column blank for this row, not $0.00. Our sum counts blank as zero.
When does this rate change?
- Illinois rates don't lock at bid. When IDOL revises a rate, “the revised rate shall apply to such contract” from its effective date, including jobs already under way (820 ILCS 130/4(l)).
- A missing notice is no excuse. A public body's failure to send the new rates “does not relieve the contractor of the duty to comply”, or of paying back wages (820 ILCS 130/4(g), (j)).
- IDOL surveys in June and must publish the year's schedule by July 15 (820 ILCS 130/9), then posts revisions through the year. In 2026 its postings took effect on Jan 15, Mar 2, Apr 15, May 21, Jul 15, Aug 15, Sep 21 and Oct 19, 2026. Each posting replaces all 102 county schedules.
- This page uses the posting for work performed on or after October 19, 2026 (IDOL current rates; older postings are on IDOL's historical rates page).
What each class covers
IDOL's explanation of classes for these counties (the same text in each schedule), copied as printed. The class number on a row decides its rate.
MATERIAL TESTER & MATERIAL TESTER/INSPECTOR I AND II
Notwithstanding the difference in the classification title, the classification entitled "Material Tester I" involves the same job duties as the classification entitled "Material Tester/Inspector I". Likewise, the classification entitled "Material Tester II" involves the same job duties as the classification entitled "Material Tester/Inspector II".
Every construction inspector or materials tester rate in the Kane County group
As IDOL lists them. The highlighted row is the one this page leads with.
| Trade and class | Base wage | Fringe benefits | Total rate | OT Mon–Fri |
|---|---|---|---|---|
| Material Tester I | $43.00 | $39.11 | $82.11 | 1.5× |
| Materials Tester II | $48.00 | $39.11 | $87.11 | 1.5× |
Holidays
IDOL's schedule for each of these counties: “The following list is considered as those days for which holiday rates of wages for work performed apply: New Years Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving Day, Christmas Day and Veterans Day in some classifications/counties. Generally, any of these holidays which fall on a Sunday is celebrated on the following Monday. This then makes work performed on that Monday payable at the appropriate overtime rate for holiday pay. Common practice in a given local may alter certain days of celebration. If in doubt, please check with IDOL.”
Holiday work is paid at the holiday multiple in the overtime table (2.0× the base wage for this row).
How the Kane County group compares
The main construction inspector or materials tester rate in every county that has one, and how the pay splits here and in the nearest counties. All bars use the same scale.
Every county in Illinois
Base wage and fringe benefits, nearby
- Kane County groupbase $43.00$82.11
- DeKalb Countybase $52.64$89.40
- DuPage Countybase $43.00$82.11
- Kendall Countybase $43.00$82.11
Which county is in which construction inspector or materials tester group
Every Illinois county with a construction inspector or materials tester rate. Counties IDOL treats alike share one page; the rest have their own. You pay the rate for the county where the work is done.
| Counties | Main classification | Base wage | Total rate |
|---|---|---|---|
| Ogle County group, 3 counties: Carroll, Lee, Ogle | Material Tester I | $53.74 | $89.44 |
| Winnebago County group, 2 counties: DeKalb, Winnebago | Material Tester I | $52.64 | $89.40 |
| Kankakee County | Material Tester I | $48.70 | $84.79 |
| Cook County group, 5 counties: Cook, DuPage, Grundy, Lake, Will | Material Tester I | $43.00 | $82.11 |
| Kane County group, 4 counties: Boone, Kane, Kendall, McHenry | Material Tester I | $43.00 | $82.11 |
4 groups of counties with identical IDOL rates, and 1 county with rates of its own.
Illinois construction inspector or materials tester prevailing wage by county, with a map
More from IDOL on this rate
- Each county's IDOL schedule (PDF) is listed under Source below.
- Work that no listed trade covers: IDOL names a neighboring county's classification to use. Call 217-782-1710.
- Apprentices: IDOL's county schedules list journeyworker and foreman rates only.
Every trade's rates, county by county: Boone · Kane · Kendall · McHenry
Are you being paid this rate?
Add your base wage to what your employer pays into health, pension and other plans for you, and compare it with $82.11. Your contractor has to post the rates on the job site or give you written notice of them (820 ILCS 130/4(n)), and file a certified payroll with IDOL by the 15th of each month for the month before (820 ILCS 130/5).
A worker paid less than the prevailing rate can sue for the difference (820 ILCS 130/4(g)).
Source
Illinois Department of Labor, prevailing wage rates, posted October 19, 2026. IDOL prints one schedule per county:
- Boone County: labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/conmed/documents/fy27/20261019/Boone.pdf, page 1
- Kane County: labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/conmed/documents/fy27/20261019/Kane.pdf, page 2
- Kendall County: labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/conmed/documents/fy27/20261019/Kendall.pdf, page 2
- McHenry County: labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/conmed/documents/fy27/20261019/McHenry.pdf, page 2
Each figure is read from IDOL's PDF and checked by a second, separate reader. IDOL prints no total; ours is re-added independently. How we check · Download every Illinois rate as CSV · Report an error