332311 Prefabricated Metal Building and Component Manufacturing · Michigan

Porter Corp

Holland, MI · ~152 workers · 4 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
4.3
Avg TCR
3.3
Industry avg
0
Fatalities
Subscribe to safety-record updates (RSS)

The verdict

Porter Corp runs at 131% of its industry's injury rate - more dangerous than the typical 332311 Prefabricated Metal Building and Component Manufacturing workplace, earning a grade D.

Porter Corp: 4.3 TCR = 131% of 332311 Prefabricated Metal Building and Component Manufacturing BLS 3.3 · 4y Form 300A (see methodology below)

Porter Corp safety composite

Porter Corp scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 17%), 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).

D

38/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 4.32 per 100 workers

Safer than 47% of industry peers

DART rate
F 4.98 per 100 workers

Safer than 17% 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

−0.8

2021→2024

Porter Corp injury rate improved

Porter Corp's TCR fell 0.8 from 5.8 in 2021 to 5.0 in 2024. Peak filing year was 2021 at 5.8 TCR. In 2024, DART was 1.15× this establishment's average TCR (severity share of cases).

2021=5.8 · 2022=2.6 · 2023=3.9 · 2024=5.0

OSHA ITA Form 300A scorecard

Establishment book 332311 · Holland, MI ABOVE-IND · MID

Grade D · TCR 4.3 · 131% of ind

  • DART 5.0 DART
  • RANK #10/17
  • PHOTO Metal Building Suppl…
  • BOOK 4y book
  • INJ 28 inj
  • SIZE ~152 FTE

Nearest TCR peer: Metal Building Supply, inc (0.0 TCR gap)

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

Porter Corp in the TCR neighbourhood

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

TCR

What this shows Porter Corp averages 4.3 TCR (131% of the 332311 Prefabricated Metal Building and Component Manufacturing BLS benchmark).

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

Porter Corp TCR series: 2021=5.8 · 2022=2.6 · 2023=3.9 · 2024=5 · BLS 3.3

Where Porter Corp falls in its industry

393 332311 Prefabricated Metal Bui establishments

Safer than 47% of graded establishments in this industry, whose median TCR is 4.1.

More dangerous than peersSafer than peers

Narrower to Michigan alone (the establishments it most directly competes with for workers and contracts): ranked #10 safest of 17 332311 Prefabricated Metal Bui employers in Michigan.

Porter Corp (152 employees, TCR 4.3) among 29 same-industry peers, split at the industry median of 75 employees and a TCR of 4.1 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 0200400600800 0510152025 Average employees Total Case Rate Porter Corp
Porter Corp (152 employees, TCR 4.3) among 29 same-industry peers, split at the industry median of 75 employees and a TCR of 4.1

Porter Corp has more employees than the 332311 Prefabricated Metal Building and median and a higher injury rate than the industry's median TCR of 4.1. 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 5.0 5.0 8 0 0
2023 3.9 3.9 7 0 0
2022 2.6 1.9 4 0 0
2021 5.8 5.2 9 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

332311 · MI · Holland

393 332311 Prefabricated Metal Building and Component Manufacturing employers nationwide with a credible TCR · 16,393 rated employers in Michigan with headcount on file · 299 employers in Holland, MI · 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 Metal Building Supply, inc 4.3 TCR
NAICS-TCR AAR Mobility 4.3 TCR
NAICS-TCR CSBS Manufacturing 4.3 TCR
NAICS-TCR Elite Structures, Inc. 4.3 TCR
STATE-SIZE Grand River Construction 152 FTE
STATE-SIZE Jergens Piping Corp-Mi 152 FTE
STATE-SIZE Warren Michigan Plant 152 FTE
STATE-SIZE PotlatchDeltic Land & Lumber, LLC. 152 FTE
CITY-NEAR LG Energy Solutions - Holland 1,263 FTE
CITY-NEAR Haworth HQ 1,165 FTE
CITY-NEAR Haworth Office 1,075 FTE
CITY-NEAR PADNOS 912 FTE
NAT-TCR Freightliner of Lebanon 4.3 TCR
NAT-TCR New Market Bank 4.3 TCR
NAT-TCR Ridgeview Psychiatric Services- Ballad Health 4.3 TCR
NAT-TCR New Waters Recovery North Carolina LLC 4.3 TCR
NAT-SIZE Whippany Actuation Systems 152 FTE
NAT-SIZE Benton PUD 152 FTE
NAT-SIZE Trilliant Distribution Center 152 FTE
NAT-SIZE 483020-East Penn | PA | KBS-825 152 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. 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.