Air system balancing and testing · Wisconsin

Main Building

Sparta, WI · ~165 workers · 6 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
7.3
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Main Building runs at 260% of its industry's injury rate - far more dangerous than the typical Air system balancing and testing workplace, earning a grade F.

Main Building: 7.3 TCR = 260% of Air system balancing and testing BLS 2.8 · 6y Form 300A (see methodology below)

Main Building safety composite

Main Building scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on total case rate (tcr) (safer than 20%), 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).

F

34/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 7.29 per 100 workers

Safer than 20% of industry peers

DART rate
D 2 per 100 workers

Safer than 39% 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%).

Rising injury rate

Main Building: 7.2 → 8.0 TCR

Peak year 2022 @ 10.4 TCR · DART/TCR 0.27× in 2023

Main Building's TCR rose 0.8 from 7.2 in 2018 to 8.0 in 2023. Peak filing year was 2022 at 10.4 TCR. In 2023, DART was 0.27× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Sparta, WI ABOVE-IND · MID

Grade F · TCR 7.3 · 260% of ind

  • DART 2.0 DART
  • RANK #121/154
  • PHOTO C.L. Linfoot Co
  • BOOK 6y book
  • INJ 70 inj
  • SIZE ~165 FTE

Nearest TCR peer: C.L. Linfoot Co (0.0 TCR gap)

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

Main Building in the TCR neighbourhood

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

TCR

What this shows Main Building averages 7.3 TCR (260% of the Air system balancing and testing BLS benchmark).

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

Main Building TCR series: 2018=7.2 · 2019=3.5 · 2020=4.8 · 2021=9.8 · 2022=10.4 · 2023=8 · BLS 2.8

Where Main Building falls in its industry

5,793 Air system balancing and testi establishments

Safer than 20% 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 #121 safest of 154 Air system balancing and testi employers in Wisconsin.

Main Building (165 employees, TCR 7.3) 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 Main Building
Main Building (165 employees, TCR 7.3) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Main Building has more employees than the Air system balancing and testing median and a higher 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
2023 8.0 2.0 15 1 0
2022 10.4 2.4 13 0 0
2021 9.8 3.9 14 1 0
2020 4.8 2.1 9 0 0
2019 3.5 2.0 7 0 0
2018 7.2 0.0 12 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · WI · Sparta

5,793 Air system balancing and testing employers nationwide with a credible TCR · 12,834 rated employers in Wisconsin with headcount on file · 44 employers in Sparta, 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 C.L. Linfoot Co 7.3 TCR
NAICS-TCR Chatham Sheetmetal 7.3 TCR
NAICS-TCR ABM Air Conditioning & Heating Inc. 7.3 TCR
NAICS-TCR Midwest Plumbing, LLC 7.3 TCR
STATE-SIZE Milwaukee Jones Island 165 FTE
STATE-SIZE Heartland Label LC 165 FTE
STATE-SIZE Oldcastle BuildingEnvelope Wausau 165 FTE
STATE-SIZE Processed Metals Innovators, Inc. 165 FTE
CITY-NEAR Sparta Area School District 587 FTE
CITY-NEAR Mathews Archery, Inc 345 FTE
CITY-NEAR Northern Engraving Corporation 321 FTE
CITY-NEAR Plant Four 307 FTE
NAT-TCR Konwinski Construction Inc 7.3 TCR
NAT-TCR Apex Plastics 7.3 TCR
NAT-TCR Arrow Gear Company 7.3 TCR
NAT-TCR Us Autoforce Skokie 7.3 TCR
NAT-SIZE Miller Road 165 FTE
NAT-SIZE Leslie Controls 165 FTE
NAT-SIZE Golden Hill Post Acute 165 FTE
NAT-SIZE Pacific Seafood - Newport, LLC 165 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: 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.