Diodes, solid-state (e.g., germanium, silicon), manufacturing · Michigan

Ann Arbor Site

Ann Arbor, MI · ~45 workers · 3 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.8
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Ann Arbor Site runs at 23% of its industry's injury rate - far safer than the typical Diodes, solid-state (e.g., germanium, silicon), manufacturing workplace, earning a grade A.

Ann Arbor Site: 0.8 TCR = 23% of Diodes, solid-state (e.g., germanium, silicon), manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Ann Arbor Site safety composite

Ann Arbor Site scores strongest on dart rate (safer than 77% 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

64/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 0.77 per 100 workers

Safer than 60% of industry peers

DART rate
B 0 per 100 workers

Safer than 77% 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

−2.3

2022→2024

Ann Arbor Site injury rate improved

Ann Arbor Site's TCR fell 2.3 from 2.3 in 2022 to 0.0 in 2024. Peak filing year was 2022 at 2.3 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2022=2.3 · 2023=0.0 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 334413 · Ann Arbor, MI AT/BELOW-IND · SMALL

Grade A · TCR 0.8 · 23% of ind

  • DART 0.0 DART
  • RANK P60
  • PHOTO ON Semiconductor Pho…
  • BOOK 3y book
  • INJ 1 inj
  • SIZE ~45 FTE

Nearest TCR peer: ON Semiconductor Phoenix (0.0 TCR gap)

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

Ann Arbor Site in the TCR neighbourhood

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

TCR

What this shows Ann Arbor Site averages 0.8 TCR (23% of the Diodes, solid-state (e.g., germanium, silicon), manufacturing BLS benchmark).

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

Ann Arbor Site TCR series: 2022=2.3 · 2023=0 · 2024=0 · BLS 3.3

Where Ann Arbor Site falls in its industry

437 Diodes, solid-state (e.g., ger establishments

Safer than 60% of graded establishments in this industry, whose median TCR is 0.9.

More dangerous than peersSafer than peers
Ann Arbor Site (45 employees, TCR 0.8) among 29 same-industry peers, split at the industry median of 216 employees and a TCR of 0.9 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 01,0002,0003,0004,000 0246 Average employees Total Case Rate Ann Arbor Site
Ann Arbor Site (45 employees, TCR 0.8) among 29 same-industry peers, split at the industry median of 216 employees and a TCR of 0.9

Ann Arbor Site has fewer employees than the Diodes, solid-state (e.g., germanium, si median and a lower injury rate than the industry's median TCR of 0.9. 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 0.0 0.0 0 0 0
2022 2.3 0.0 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

334413 · MI · Ann Arbor

437 Diodes, solid-state (e.g., germanium, silicon), manufacturing employers nationwide with a credible TCR · 16,393 rated employers in Michigan with headcount on file · 271 employers in Ann Arbor, 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 ON Semiconductor Phoenix 0.8 TCR
NAICS-TCR MPF Products Inc 0.8 TCR
NAICS-TCR II-VI Finisar 0.8 TCR
NAICS-TCR CubicPV Inc. 0.8 TCR
STATE-SIZE Grand Junction Office 45 FTE
STATE-SIZE DeWeerdt Poultry Farm, LLC 45 FTE
STATE-SIZE Clare SC 45 FTE
STATE-SIZE Thomas Sebold and Associates, Inc. 45 FTE
CITY-NEAR Saint Joseph Mercy Hospital-AnnArbor 5,575 FTE
CITY-NEAR St. Joseph Mercy Hospital-Ann Arbor 5,554 FTE
CITY-NEAR IHA Health Services Corporation 2,533 FTE
CITY-NEAR Thomson Reuters - Ann Arbor 1,090 FTE
NAT-TCR Devon Energy - Wink TX 0.8 TCR
NAT-TCR Global Welding Services, Inc. 0.8 TCR
NAT-TCR Location 20001 0.8 TCR
NAT-TCR Nemera Buffalo Grove LLC - 600 Deerfield Parkway, Buffalo Grove, Illinois 60089 0.8 TCR
NAT-SIZE New Waters Recovery North Carolina LLC 45 FTE
NAT-SIZE Arizona Dept. of Corrections-Globe 45 FTE
NAT-SIZE Grinder Fabricators & Erectors, INC 45 FTE
NAT-SIZE Lee Roy Jordan Redwood Lumber Co 45 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. 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.