Mechanical contractors · Wisconsin

Stack Bros. Mechanical Contractors, Inc.

Superior, WI · ~143 workers · 5 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.1
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Stack Bros. Mechanical Contractors, Inc. runs at 38% of its industry's injury rate - far safer than the typical Mechanical contractors workplace, earning a grade A.

Stack Bros. Mechanical Contractors, Inc.: 1.1 TCR = 38% of Mechanical contractors BLS 2.8 · 5y Form 300A (see methodology below)

Stack Bros. Mechanical Contractors, Inc. safety composite

Stack Bros. Mechanical Contractors, Inc. scores strongest on total case rate (tcr) (safer than 86% 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).

B

75/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 1.06 per 100 workers

Safer than 86% 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

−2.6

2019→2024

Stack Bros. Mechanical Contractors, Inc. injury rate improved

Stack Bros. Mechanical Contractors, Inc.'s TCR fell 2.6 from 2.6 in 2019 to 0.0 in 2024. Peak filing year was 2019 at 2.6 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2019=2.6 · 2020=0.9 · 2021=0.0 · 2023=1.8 · 2024=0.0

OSHA ITA Form 300A scorecard

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

Grade A · TCR 1.1 · 38% of ind

  • DART 0.0 DART
  • RANK #19/154
  • PHOTO OCE Mechanical, LLC
  • BOOK 5y book
  • INJ 8 inj
  • SIZE ~143 FTE

Nearest TCR peer: OCE Mechanical, LLC (0.0 TCR gap)

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

Stack Bros. Mechanical Contractors, Inc. in the TCR neighbourhood

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

TCR

What this shows Stack Bros. Mechanical Contractors, Inc. averages 1.1 TCR (38% of the Mechanical contractors BLS benchmark).

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

Stack Bros. Mechanical Contractors, Inc. TCR series: 2019=2.6 · 2020=0.9 · 2021=0 · 2023=1.8 · 2024=0 · BLS 2.8

Where Stack Bros. Mechanical Contractors, Inc. falls in its industry

5,793 Mechanical contractors establishments

Safer than 86% 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 #19 safest of 154 Mechanical contractors employers in Wisconsin.

Stack Bros. Mechanical Contractors, Inc. (143 employees, TCR 1.1) 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 Stack Bros. Mechanical Contractors, Inc.
Stack Bros. Mechanical Contractors, Inc. (143 employees, TCR 1.1) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Stack Bros. Mechanical Contractors, Inc. 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 0.0 0.0 0 0 0
2023 1.8 0.0 3 0 0
2021 0.0 0.0 0 0 0
2020 0.9 0.0 1 0 0
2019 2.6 0.7 4 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · WI · Superior

5,793 Mechanical contractors employers nationwide with a credible TCR · 12,834 rated employers in Wisconsin with headcount on file · 80 employers in Superior, 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 OCE Mechanical, LLC 1.1 TCR
NAICS-TCR Nixco Plumbing Inc. 1.1 TCR
NAICS-TCR DMI Corp. 1.1 TCR
NAICS-TCR HMI Mechanical Systems, Inc. 1.1 TCR
STATE-SIZE Tri-North Builders 143 FTE
STATE-SIZE CCI-HQ 143 FTE
STATE-SIZE Musson Brothers Inc 143 FTE
STATE-SIZE Zignego Company 143 FTE
CITY-NEAR School District of Superior 1,033 FTE
CITY-NEAR Halvor Lines, Inc. Superior 747 FTE
CITY-NEAR Halvor Lines Superior Terminal 527 FTE
CITY-NEAR Lakehead Constructors, Inc. 474 FTE
NAT-TCR Sheedy Drayage Co. 1.1 TCR
NAT-TCR Walser Subaru St. Paul 1.1 TCR
NAT-TCR C&B Piping (East), Inc. 1.1 TCR
NAT-TCR P & L General Contractors, Inc. 1.1 TCR
NAT-SIZE Desert Fire Protection, LP 143 FTE
NAT-SIZE 2330 - Belleville 143 FTE
NAT-SIZE 2284 - Fort Smith 143 FTE
NAT-SIZE 2043 - Overland Park West 143 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, 2021, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.