Mechanical contractors · Minnesota

Ahern Twin Cities

Name: Ahern Twin Cities Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Minneapolis, MN · ~47 workers · 7 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

B
Good Safety Record: 1.5
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Ahern Twin Cities runs at 55% of its industry's injury rate - safer than the typical Mechanical contractors workplace, earning a grade B.

Ahern Twin Cities: 1.5 TCR = 55% of Mechanical contractors BLS 2.8 · 7y Form 300A (see methodology below)

Ahern Twin Cities safety composite

Ahern Twin Cities 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).

72/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 1.53 per 100 workers

Safer than 77% 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%).

Ahern Twin Cities held a steady TCR band

Ahern Twin Cities's TCR held near 0.0 from 0.0 in 2018 to 0.0 in 2024. Peak filing year was 2023 at 4.4 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2018=0.0 · 2019=0.0 · 2020=4.1 · 2021=2.3 · 2022=0.0 · 2023=4.4 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Minneapolis, MN AT/BELOW-IND · SMALL

Grade B · TCR 1.5 · 55% of ind

DART 0.0 DART
RANK #21/153
PHOTO Winger Contracting C…
BOOK 7y book
INJ 5 inj
SIZE ~47 FTE

Nearest TCR peer: Winger Contracting Company (0.0 TCR gap)

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

This site

1.5
Winger Contrac

1.5
Main Office

1.5
Hiller Charles

1.5
Building Integ

1.5

What this shows Ahern Twin Cities averages 1.5 TCR (55% of the Mechanical contractors BLS benchmark).

Ahern Twin Cities TCR series: 2018=0 · 2019=0 · 2020=4.1 · 2021=2.3 · 2022=0 · 2023=4.4 · 2024=0 · BLS 2.8

Where Ahern Twin Cities falls in its industry

5,793 Mechanical contractors establishments

Safer than 77% of graded establishments in this industry, whose median TCR is 3.3.

Grade B

More dangerous than peersSafer than peers

Narrower to Minnesota alone (the establishments it most directly competes with for workers and contracts): ranked #21 safest of 153 Mechanical contractors employers in Minnesota.

Ahern Twin Cities (47 employees, TCR 1.5) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Ahern Twin Cities 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	4.4	0.0	2
2022	0.0	0.0	0
2021	2.3	2.3	1
2020	4.1	2.0	2
2019	0.0	0.0	0
2018	0.0	0.0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · MN · Minneapolis

5,793 Mechanical contractors employers nationwide with a credible TCR · 15,828 rated employers in Minnesota with headcount on file · 1,321 employers in Minneapolis, MN · 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	Winger Contracting Company	OTTUMWA, IA	1.5 TCR
NAICS-TCR	Main Office	FRESNO, CA	1.5 TCR
NAICS-TCR	Hiller Charleston	NORTH CHARLESTON, SC	1.5 TCR
NAICS-TCR	Building Integrated Services, LLC	OAKWOOD VILLAGE, OH	1.5 TCR
STATE-SIZE	Staples	STAPLES	47 FTE
STATE-SIZE	Campbell	TINTAH	47 FTE
STATE-SIZE	Willmar Live Haul	WILLMAR	47 FTE
STATE-SIZE	Mille Lacs Energy Cooperative	AITKIN	47 FTE
CITY-NEAR	University of Minnesota Twin Cities	Minneapolis	22,522 FTE
CITY-NEAR	MN950 MN TELECOMMUTER	Minneapolis	12,021 FTE
CITY-NEAR	0501 - City Center	Minneapolis	8,459 FTE
CITY-NEAR	Hennepin County Medical Center	Minneapolis	7,030 FTE
NAT-TCR	Slinger	Slinger, WI	1.5 TCR
NAT-TCR	Grocer Supply Company : Holcombe Houston, TX (PDC/FDC)	Houston, TX	1.5 TCR
NAT-TCR	Johnson Laminating and Coating	Carson, CA	1.5 TCR
NAT-TCR	Olympus Bartlett	Bartlett, TN	1.5 TCR
NAT-SIZE	AMK Welding	South Windsor, CT	47 FTE
NAT-SIZE	General Steel Crane & Rigging LLC	Hopkinsville, KY	47 FTE
NAT-SIZE	Chuckran Auto Parts	Bridgewater, MA	47 FTE
NAT-SIZE	Compleat Stair Kennesaw GA	Kennesaw, GA	47 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.