Mechanical contractors · Illinois

AT Mechanical LLC

Name: AT Mechanical LLC Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

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

Compiled by PlainSafetyScore · August 25, 2026

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).

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 0B61 - NORTH JERSEY …
BOOK 9y book
INJ 10 inj
SIZE ~40 FTE

Nearest TCR peer: 0B61 - NORTH JERSEY FIRE (0.0 TCR gap)

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

This site

2.8
0B61 - NORTH J

2.8
Comfort System

2.8
OHCOL-Columbus

2.8
kleeberg Mecha

2.8

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

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.

Grade C

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

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
2024	0.0	0.0	0
2023	3.0	3.0	1
2022	2.3	2.3	1
2021	2.8	2.8	1
2020	8.3	8.3	3
2019	3.0	3.0	1
2018	0.0	0.0	0
2017	1.8	1.8	1
2016	4.2	4.2	2

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	Place	Metric
NAICS-TCR	0B61 - NORTH JERSEY FIRE	LEDGEWOOD, NJ	2.8 TCR
NAICS-TCR	Comfort Systems USA - Bowling Green	BOWLING GREEN, KY	2.8 TCR
NAICS-TCR	OHCOL-Columbus Corp. Dealership	CANAL WINCHESTER, OH	2.8 TCR
NAICS-TCR	kleeberg Mechanical Services LLC	LUDLOW, MA	2.8 TCR
STATE-SIZE	AMEREN ILLINOIS - Gas Integrity Management	DECATUR	40 FTE
STATE-SIZE	NG Bloomington Reporting Center	BLOOMINGTON	40 FTE
STATE-SIZE	Downers Grove Sanitary District	DOWNERS GROVE	40 FTE
STATE-SIZE	Window Works Addison	ADDISON	40 FTE
CITY-NEAR	Jewel Distribution DC	Melrose Park	1,169 FTE
CITY-NEAR	NAI-0032-0032-06651 FAC-06651-MELROSE PARK-IL	Melrose Park	1,106 FTE
CITY-NEAR	Gottlieb Memorial Hospital	Melrose Park	923 FTE
CITY-NEAR	Fresenius Kabi USA, LLC - Ruby Street Plant	Melrose Park	714 FTE
NAT-TCR	USB Alabama LLC	Bessemer, AL	2.8 TCR
NAT-TCR	Dynisco Instruments	Franklin, MA	2.8 TCR
NAT-TCR	0415-Chillicothe	Chillicothe, OH	2.8 TCR
NAT-TCR	KZ Valve, LLC	Greenwood, NE	2.8 TCR
NAT-SIZE	ABF Freight 039	West Allis, WI	40 FTE
NAT-SIZE	BIC Construction	Lincoln, NE	40 FTE
NAT-SIZE	ABF Freight 220	Delray Beach, FL	40 FTE
NAT-SIZE	Warwood Armature Repair Company	Wheeling, WV	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.