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Grundy County · Millwright

Millwright prevailing wage in Grundy County, Illinois

$105.34an hour, base + fringes

$58.51 wage + $46.83 fringe benefits

On Illinois public works in Grundy County, a millwright must be paid at least $105.34 an hour: a $58.51 base wage plus $46.83 in fringe benefits for health and welfare, pension, vacation, training and other insurance. IDOL lists each part but prints no total, so $105.34 is our sum of its columns. Overtime after 8 hours a day, Monday to Friday, is 1.5 times the base wage.

IDOL's Grundy County schedule, posted October 19, 2026, for work performed on or after October 19, 2026. Checked against labor.illinois.gov on October 24, 2026.

Base wage and fringe: $58.51 + $46.83

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)	$58.51
Health and welfare	$14.49
Pension	$28.87
Vacation and holiday	$2.43
Training	$1.04
Base + fringes (our sum; IDOL prints no total)	$105.34

IDOL leaves the other insurance column blank for this row, not $0.00. Our sum counts blank as zero.

Foreman base wage: $64.36 an hour, with the same fringe benefits.

Overtime

When	Multiple of base
Monday to Friday, after 8 hours a day	1.5× $87.77
Saturday, every hour	1.5× $87.77
Sunday, every hour	2.0× $117.02
Holidays, every hour	2.0× $117.02

IDOL prints a multiple, not a dollar rate. Its legend: “Unless otherwise noted, OT pay is required for any hour greater than 8 worked each day, Mon through Fri. The number listed is the multiple of the base wage.” The figure under each multiple is the base wage times that multiple.

IDOL's schedule also has two columns headed “Add OT 1.5x owed” and “Add OT 2.0x owed”. For this row they read $0.00 and $0.00. IDOL's legend doesn't define them, so ask IDOL (217-782-1710) before you rely on them.

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Davis-Bacon millwright rate in Grundy County

Federally funded or assisted construction here uses the U.S. Department of Labor's wage determinations. When a contract requires both the state rate and the Davis-Bacon rate, paying the higher of the two meets both. The contract documents say which apply.

For building work, the matching Davis-Bacon classification is CARPENTER, CARPENTER, MILLWRIGHT, PILEDRIVER, AND SOFT FLOOR LAYER (GRUNDY COUNTY) at $80.92 ($45.61 base + $35.31 fringe), from IL20260008 modification 3, published October 22, 2026, rate CARP0555-012. Against IDOL's $105.34: IDOL's rate is $24.42 an hour higher.

Construction	Federal classification	Base + fringe	Base	WD
Building, Residential	CARPENTER, CARPENTER, MILLWRIGHT, PILEDRIVER, AND SOFT FLOOR LAYER (GRUNDY COUNTY)CARP0555-012	$80.92	$45.61	IL20260008 Mod 3

Davis-Bacon rates from SAM.gov, read October 25, 2026. Our federal totals are base plus fringe; DOL prints no total. Illinois Davis-Bacon changes

Holidays

IDOL's Grundy County schedule: “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).

When this rate changes

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).

How Grundy County compares

The main millwright 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

Grundy $105.343727142

$71.48Alexander$108.33Will

GrundyNearby: Kendall $105.34, LaSalle $87.89, Will $108.33Each column is a group of counties with about the same main rate; its height is how many. 1 county pays more than Grundy, 3 the same, 97 less.

Wage and fringe benefits, nearby

Grundy Countybase $58.51$105.34
Kendall Countybase $58.51$105.34
LaSalle Countybase $53.28$87.89
Will Countybase $58.51$108.33

Millwright rates in nearby counties

Current IDOL rates. You pay the rate for the county where the work is done. The Act defines “locality” as the county of the physical work, with narrow exceptions (820 ILCS 130/2).

County	Classification	Base + fringes	Base	vs Grundy County
Will County	Millwright	$108.33	$58.51	+$2.99
Grundy County	Millwright	$105.34	$58.51
Kendall County	Millwright	$105.34	$58.51	same
DuPage County	Millwright	$105.33	$58.51	−$0.01
Kankakee County	Millwright (building)	$96.52	$48.76	−$8.82
LaSalle County	Millwright (building)	$87.89	$53.28	−$17.45
Livingston County	Millwright (building)	$76.22	$40.50	−$29.12

Illinois millwright prevailing wage by county, with a map

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 $105.34. 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 for Grundy County, posted October 19, 2026, page 2: labor.illinois.gov/content/dam/soi/en/web/idol/laws-rules/conmed/documents/fy27/20261019/Grundy.pdf

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 Grundy County as CSV · Report an error