Building materials supply dealers · California

Thompson Construction Supply

Corona, CA · ~38 workers · 8 years of OSHA Injury Tracking Application data.

B
Good Safety Record
1.8
Avg TCR
3.4
Industry avg
0
Fatalities
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The verdict

Thompson Construction Supply runs at 54% of its industry's injury rate - safer than the typical Building materials supply dealers workplace, earning a grade B.

Thompson Construction Supply: 1.8 TCR = 54% of Building materials supply dealers BLS 3.4 · 8y Form 300A (see methodology below)

Thompson Construction Supply safety composite

Thompson Construction Supply scores strongest on total case rate (tcr) (safer than 88% of same-industry peers) and weakest on fatalities (safer than 50%), 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

66/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
B 1.82 per 100 workers

Safer than 88% of industry peers

DART rate
D 2.79 per 100 workers

Safer than 52% of industry peers

Fatalities
D 0

Safer than 50% 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

2017→2024

Thompson Construction Supply injury rate improved

Thompson Construction Supply's TCR fell 4.2 from 7.0 in 2017 to 2.8 in 2024. Peak filing year was 2017 at 7.0 TCR. In 2024, DART was 1.53× this establishment's average TCR (severity share of cases).

2017=7.0 · 2018=4.7 · 2019=0.0 · 2020=0.0 · 2021=0.0 · 2022=0.0 · 2023=0.0 · 2024=2.8

OSHA ITA Form 300A scorecard

Establishment book 444190 · Corona, CA AT/BELOW-IND · SMALL

Grade B · TCR 1.8 · 54% of ind

  • DART 2.8 DART
  • RANK #23/159
  • PHOTO Hbc - Hbc Admin
  • BOOK 8y book
  • INJ 6 inj
  • SIZE ~38 FTE

Nearest TCR peer: Hbc - Hbc Admin (0.0 TCR gap)

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

Thompson Construction Supply in the TCR neighbourhood

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

TCR

What this shows Thompson Construction Supply averages 1.8 TCR (54% of the Building materials supply dealers BLS benchmark).

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

Thompson Construction Supply TCR series: 2017=7 · 2018=4.7 · 2019=0 · 2020=0 · 2021=0 · 2022=0 · 2023=0 · 2024=2.8 · BLS 3.4

Where Thompson Construction Supply falls in its industry

1,643 Building materials supply deal establishments

Safer than 88% of graded establishments in this industry, whose median TCR is 5.2.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #23 safest of 159 Building materials supply deal employers in California.

Thompson Construction Supply (38 employees, TCR 1.8) among 29 same-industry peers, split at the industry median of 35 employees and a TCR of 5.2 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 050100150200 0510152025 Average employees Total Case Rate Thompson Construction Supply
Thompson Construction Supply (38 employees, TCR 1.8) among 29 same-industry peers, split at the industry median of 35 employees and a TCR of 5.2

Thompson Construction Supply has more employees than the Building materials supply dealers median and a lower injury rate than the industry's median TCR of 5.2. 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 2.8 2.8 1 0 0
2023 0.0 0.0 0 0 0
2022 0.0 0.0 0 0 0
2021 0.0 0.0 0 0 0
2020 0.0 0.0 0 0 0
2019 0.0 0.0 0 0 0
2018 4.7 4.7 2 0 0
2017 7.0 7.0 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

444190 · CA · Corona

1,643 Building materials supply dealers employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 409 employers in Corona, CA · 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 Hbc - Hbc Admin 1.8 TCR
NAICS-TCR Corporate Toano 1.8 TCR
NAICS-TCR Spahn & Rose - Jesup Yard 1.8 TCR
NAICS-TCR Branch 1/5/8/12 - Hot Springs 1.8 TCR
STATE-SIZE CAL-O SHIPPING 38 FTE
STATE-SIZE GAR & S Farm Labor Services, Inc. 38 FTE
STATE-SIZE Supreme Almonds of California, Inc. 38 FTE
STATE-SIZE Bays Ranch Inc 38 FTE
CITY-NEAR Monster Energy Company 2535 Anselmo Dr 2,572 FTE
CITY-NEAR Monster Energy Company 2,388 FTE
CITY-NEAR Monster Energy Company - Anselmo Dr, Corona 2,335 FTE
CITY-NEAR California Department of Transportation Facility 289 1,587 FTE
NAT-TCR Mt. Vernon Shingle 1.8 TCR
NAT-TCR St. Louis Chouteau 1.8 TCR
NAT-TCR Horizon Public Health-Alexandria 1.8 TCR
NAT-TCR Plaza 41 1.8 TCR
NAT-SIZE Strawser Central Region Office 38 FTE
NAT-SIZE Minnesota Exteriors, Inc. 38 FTE
NAT-SIZE G.B. Industry, Co., L.P. 38 FTE
NAT-SIZE T. E. Construction Specialties Inc. 38 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. 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.