Plumbing contractors · Michigan

Plumbing Professors LLC

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

Auburn Hills, MI · ~31 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · September 26, 2026

B
Good Safety Record: 1.4
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Plumbing Professors LLC runs at 50% of its industry's injury rate - safer than the typical Plumbing contractors workplace, earning a grade B.

Plumbing Professors LLC: 1.4 TCR = 50% of Plumbing contractors BLS 2.8 · 2y Form 300A (see methodology below)

Plumbing Professors LLC safety composite

Plumbing Professors LLC scores strongest on total case rate (tcr) (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).

73/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): B 1.41 per 100 workers

Safer than 80% 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

−2.8

2016→2017

Plumbing Professors LLC injury rate improved

Plumbing Professors LLC's TCR fell 2.8 from 2.8 in 2016 to 0.0 in 2017. Peak filing year was 2016 at 2.8 TCR. In 2017, DART was 0× this establishment's average TCR (severity share of cases).

2016=2.8 · 2017=0.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Auburn Hills, MI AT/BELOW-IND · SMALL

Grade B · TCR 1.4 · 50% of ind

DART 0.0 DART
RANK #34/153
PHOTO Irontree Constructio…
BOOK 2y book
INJ 1 inj
SIZE ~31 FTE

Nearest TCR peer: Irontree Construction Inc (0.0 TCR gap)

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

This site

1.4
Irontree Const

1.4
Coastal Fire P

1.4
WFS_JAX

1.4
Fire Protectio

1.4

What this shows Plumbing Professors LLC averages 1.4 TCR (50% of the Plumbing contractors BLS benchmark).

Plumbing Professors LLC TCR series: 2016=2.8 · 2017=0 · BLS 2.8

Where Plumbing Professors LLC falls in its industry

5,793 Plumbing contractors establishments

Safer than 80% of graded establishments in this industry, whose median TCR is 3.3.

Grade B

More dangerous than peersSafer than peers

Narrower to Michigan alone (the establishments it most directly competes with for workers and contracts): ranked #34 safest of 153 Plumbing contractors employers in Michigan.

Plumbing Professors LLC (31 employees, TCR 1.4) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Plumbing Professors LLC has fewer employees than the Plumbing 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
2017	0.0	0.0	0	0	0
2016	2.8	0.0	1	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · MI · Auburn Hills

5,793 Plumbing contractors employers nationwide with a credible TCR · 16,393 rated employers in Michigan with headcount on file · 215 employers in Auburn Hills, MI · 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	Irontree Construction Inc	MESA, AZ	1.4 TCR
NAICS-TCR	Coastal Fire Protection Inc .	N. FT. MYERS, FL	1.4 TCR
NAICS-TCR	WFS_JAX	JACKSONVILLE, FL	1.4 TCR
NAICS-TCR	Fire Protection Services LLC	WICHITA, KS	1.4 TCR
STATE-SIZE	CLARKSTON CARRIER ANNEX_1358201	CLARKSTON	31 FTE
STATE-SIZE	Lapeer County EMS Station 1	LAPEER	31 FTE
STATE-SIZE	The Bungalows at Branson Meadows	BRANSON	31 FTE
STATE-SIZE	MPD Ottawa Cutstock, LLC	IRONWOOD	31 FTE
CITY-NEAR	FCA US Headquarters and Technology Center	Auburn Hills	14,088 FTE
CITY-NEAR	FCA US Headquarters and Technology	Auburn Hills	12,609 FTE
CITY-NEAR	Continental - Auburn Hills North	Auburn Hills	1,318 FTE
CITY-NEAR	CTC Pilot Plant	Auburn Hills	1,094 FTE
NAT-TCR	2990-Physician Services Group	Charlotte, NC	1.4 TCR
NAT-TCR	Philips Lighting Mountain Top RDC	Mountain Top, PA	1.4 TCR
NAT-TCR	Southland Park Gaming and Racing	West Memphis, AR	1.4 TCR
NAT-TCR	RAH Tucson Division Office/Home Gallery	Tucson, AZ	1.4 TCR
NAT-SIZE	Martin Overhead Garage Door Service Inc.	St. Peters, MO	31 FTE
NAT-SIZE	Superior Lawns Inc.-Plainfield Branch	Plainfield, IL	31 FTE
NAT-SIZE	Bieker Electric, Inc.	Fort Smith, AR	31 FTE
NAT-SIZE	0175 - Laurel, Md	Laurel, MD	31 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: 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.