Mechanical contractors · Illinois

AT Mechanical LLC

Melrose Park, IL · ~40 workers · 9 years of OSHA Injury Tracking Application data.

C
Average Safety Record
2.8
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

AT Mechanical LLC runs at 101% of its industry's injury rate - about level with the typical Mechanical contractors workplace, earning a grade C.

AT Mechanical LLC: 2.8 TCR = 101% of Mechanical contractors BLS 2.8 · 9y Form 300A (see methodology below)

AT Mechanical LLC safety composite

AT Mechanical LLC 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

63/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.83 per 100 workers

Safer than 56% 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

−4.2

2016→2024

AT Mechanical LLC injury rate improved

AT Mechanical LLC's TCR fell 4.2 from 4.2 in 2016 to 0.0 in 2024. Peak filing year was 2020 at 8.3 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2016=4.2 · 2017=1.8 · 2018=0.0 · 2019=3.0 · 2020=8.3 · 2021=2.8 · 2022=2.3 · 2023=3.0 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Melrose Park, IL ABOVE-IND · SMALL

Grade C · TCR 2.8 · 101% of ind

  • DART 0.0 DART
  • RANK #142/230
  • PHOTO Coolsys PHX
  • BOOK 9y book
  • INJ 10 inj
  • SIZE ~40 FTE

Nearest TCR peer: Coolsys PHX (0.0 TCR gap)

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

AT Mechanical LLC in the TCR neighbourhood

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

TCR

What this shows AT Mechanical LLC averages 2.8 TCR (101% of the Mechanical contractors BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-09-26

AT Mechanical LLC TCR series: 2016=4.2 · 2017=1.8 · 2018=0 · 2019=3 · 2020=8.3 · 2021=2.8 · 2022=2.3 · 2023=3 · 2024=0 · BLS 2.8

Where AT Mechanical LLC falls in its industry

5,793 Mechanical contractors establishments

Safer than 56% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Illinois alone (the establishments it most directly competes with for workers and contracts): ranked #142 safest of 230 Mechanical contractors employers in Illinois.

AT Mechanical LLC (40 employees, TCR 2.8) 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 AT Mechanical LLC
AT Mechanical LLC (40 employees, TCR 2.8) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

AT Mechanical LLC has fewer 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 3.0 3.0 1 0 0
2022 2.3 2.3 1 0 0
2021 2.8 2.8 1 0 0
2020 8.3 8.3 3 0 0
2019 3.0 3.0 1 0 0
2018 0.0 0.0 0 0 0
2017 1.8 1.8 1 0 0
2016 4.2 4.2 2 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · IL · Melrose Park

5,793 Mechanical contractors employers nationwide with a credible TCR · 22,804 rated employers in Illinois with headcount on file · 96 employers in Melrose Park, IL · 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 Coolsys PHX 2.8 TCR
NAICS-TCR Bel-O Sales & Service, Inc. 2.8 TCR
NAICS-TCR Koorsen Fire & Security Evansville 2.8 TCR
NAICS-TCR Comfort Systems USA - Bowling Green 2.8 TCR
STATE-SIZE Castle Manor Supportive Living 40 FTE
STATE-SIZE OAK PARK SOUTH_1434893 40 FTE
STATE-SIZE M-1 40 FTE
STATE-SIZE Chillicothe Community Fire Protection District 40 FTE
CITY-NEAR Jewel Distribution DC 1,169 FTE
CITY-NEAR NAI-0032-0032-06651 FAC-06651-MELROSE PARK-IL 1,106 FTE
CITY-NEAR Gottlieb Memorial Hospital 923 FTE
CITY-NEAR Fresenius Kabi USA, LLC - Ruby Street Plant 714 FTE
NAT-TCR USB Alabama LLC 2.8 TCR
NAT-TCR Dynisco Instruments 2.8 TCR
NAT-TCR 0415-Chillicothe 2.8 TCR
NAT-TCR KZ Valve, LLC 2.8 TCR
NAT-SIZE ABF Freight 039 40 FTE
NAT-SIZE BIC Construction 40 FTE
NAT-SIZE ABF Freight 220 40 FTE
NAT-SIZE Warwood Armature Repair Company 40 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, 2017, 2016. 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.