Mechanical contractors · Wisconsin

Ahern Madison

Deforest, WI · ~164 workers · 7 years of OSHA Injury Tracking Application data.

C
Average Safety Record
2.6
Avg TCR
2.8
Industry avg
0
Fatalities
Subscribe to safety-record updates (RSS)

The verdict

Ahern Madison runs at 93% of its industry's injury rate - about level with the typical Mechanical contractors workplace, earning a grade C.

Ahern Madison: 2.6 TCR = 93% of Mechanical contractors BLS 2.8 · 7y Form 300A (see methodology below)

Ahern Madison safety composite

Ahern Madison scores strongest on dart rate (safer than 80% of same-industry peers) and weakest on fatalities (safer than 51%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

C

64/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.59 per 100 workers

Safer than 59% of industry peers

DART rate
B 0 per 100 workers

Safer than 80% of industry peers

Fatalities
D 0

Safer than 51% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−0.8

2018→2024

Ahern Madison injury rate improved

Ahern Madison's TCR fell 0.8 from 2.4 in 2018 to 1.6 in 2024. Peak filing year was 2019 at 5.9 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2018=2.4 · 2019=5.9 · 2020=2.2 · 2021=2.1 · 2022=3.4 · 2023=0.6 · 2024=1.6

OSHA ITA Form 300A scorecard

Establishment book 238220 · Deforest, WI AT/BELOW-IND · MID

Grade C · TCR 2.6 · 93% of ind

  • DART 0.0 DART
  • RANK #54/154
  • PHOTO Kirk Williams Company
  • BOOK 7y book
  • INJ 27 inj
  • SIZE ~164 FTE

Nearest TCR peer: Kirk Williams Company (0.0 TCR gap)

Read with this employer → · Industry book → · Wisconsin employers → · Look up another →

Ahern Madison in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Ahern Madison averages 2.6 TCR (93% of the Mechanical contractors BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Ahern Madison TCR series: 2018=2.4 · 2019=5.9 · 2020=2.2 · 2021=2.1 · 2022=3.4 · 2023=0.6 · 2024=1.6 · BLS 2.8

Where Ahern Madison falls in its industry

5,793 Mechanical contractors establishments

Safer than 59% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Wisconsin alone (the establishments it most directly competes with for workers and contracts): ranked #54 safest of 154 Mechanical contractors employers in Wisconsin.

Ahern Madison (164 employees, TCR 2.6) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 050100150200250 05101520 Average employees Total Case Rate Ahern Madison
Ahern Madison (164 employees, TCR 2.6) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Ahern Madison has more employees than the Mechanical contractors median and a lower injury rate than the industry's median TCR of 3.3. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2024 1.6 0.0 3 0 0
2023 0.6 0.0 1 0 0
2022 3.4 2.0 5 0 0
2021 2.1 0.7 3 0 0
2020 2.2 1.5 3 0 0
2019 5.9 2.6 9 0 0
2018 2.4 0.8 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · WI · Deforest

5,793 Mechanical contractors employers nationwide with a credible TCR · 12,834 rated employers in Wisconsin with headcount on file · 45 employers in Deforest, WI · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Kirk Williams Company 2.6 TCR
NAICS-TCR RRSC Dayton 2.6 TCR
NAICS-TCR MIELKE Mechanical 2.6 TCR
NAICS-TCR SUBURBAN SERVICES GROUP, INC. 2.6 TCR
STATE-SIZE Gilman Cheese 164 FTE
STATE-SIZE Superior Refinery 164 FTE
STATE-SIZE Wisconsin 164 FTE
STATE-SIZE Premier Aluminum LLC 164 FTE
CITY-NEAR Hooper - WI 781 FTE
CITY-NEAR ABS Global 598 FTE
CITY-NEAR ABS Global - Deforest 561 FTE
CITY-NEAR American Girl Deforest 213 FTE
NAT-TCR Sodexo at Point Loma Nazarene University 2.6 TCR
NAT-TCR West Groton 2.6 TCR
NAT-TCR DMG Masonry Construction Ltd 2.6 TCR
NAT-TCR Duplin County Local Government 2.6 TCR
NAT-SIZE Sachse Construction 164 FTE
NAT-SIZE Cottonwood 164 FTE
NAT-SIZE Our Lady of Hope Health Center 164 FTE
NAT-SIZE Gross Electric, Inc. 164 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023, 2022, 2021, 2020, 2019, 2018. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.