Patio block, concrete, manufacturing · California

Sierra Building Products

Fontana, CA · ~89 workers · 2 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.0
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Sierra Building Products runs at 30% of its industry's injury rate - far safer than the typical Patio block, concrete, manufacturing workplace, earning a grade A.

Sierra Building Products: 1.0 TCR = 30% of Patio block, concrete, manufacturing BLS 3.3 · 2y Form 300A (see methodology below)

Sierra Building Products safety composite

Sierra Building Products scores strongest on total case rate (tcr) (safer than 93% of same-industry peers) and weakest on dart rate (safer than 48%), 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

67/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 1 per 100 workers

Safer than 93% of industry peers

DART rate
D 2.01 per 100 workers

Safer than 48% 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%).

Rising injury rate

Sierra Building Products: 0.0 → 2.0 TCR

Peak year 2020 @ 2.0 TCR · DART/TCR 2.01× in 2020

Sierra Building Products's TCR rose 2.0 from 0.0 in 2019 to 2.0 in 2020. In 2020, DART was 2.01× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 327331 · Fontana, CA AT/BELOW-IND · SMALL

Grade A · TCR 1.0 · 30% of ind

  • DART 2.0 DART
  • RANK #1/33
  • PHOTO Crofton, MD
  • BOOK 2y book
  • INJ 2 inj
  • SIZE ~89 FTE

Nearest TCR peer: Crofton, MD (0.0 TCR gap)

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

Sierra Building Products in the TCR neighbourhood

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

TCR

What this shows Sierra Building Products averages 1.0 TCR (30% of the Patio block, concrete, manufacturing BLS benchmark).

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

Sierra Building Products TCR series: 2019=0 · 2020=2 · BLS 3.3

Where Sierra Building Products falls in its industry

321 Patio block, concrete, manufac establishments

Safer than 93% of graded establishments in this industry, whose median TCR is 4.1.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #1 safest of 33 Patio block, concrete, manufac employers in California.

Sierra Building Products (89 employees, TCR 1.0) among 29 same-industry peers, split at the industry median of 42 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 0100200300 051015 Average employees Total Case Rate Sierra Building Products
Sierra Building Products (89 employees, TCR 1.0) among 29 same-industry peers, split at the industry median of 42 employees and a TCR of 4.1

Sierra Building Products has more employees than the Patio block, concrete, manufacturing median and a lower 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
2020 2.0 2.0 2 0 0
2019 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

327331 · CA · Fontana

321 Patio block, concrete, manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 363 employers in Fontana, 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 Crofton, MD 1.0 TCR
NAICS-TCR APG Highland 1.0 TCR
NAICS-TCR Boxley Block, LLC 1.0 TCR
NAICS-TCR TEXAS BEST BLOCK - DALB1 0.9 TCR
STATE-SIZE Bud of California Broccoli 89 FTE
STATE-SIZE GMI - CA 89 FTE
STATE-SIZE Ramona 89 FTE
STATE-SIZE Booth Ranches LLC-BR1 89 FTE
CITY-NEAR North America Fulfillment Centers (FCs) : LAX9 2,844 FTE
CITY-NEAR Amazon.com Services LLC - LAX9 2,645 FTE
CITY-NEAR 08880314 FONTANA MEDICAL CENTER 2,635 FTE
CITY-NEAR 2032-08180314 2,236 FTE
NAT-TCR Oxylance, Inc. 1.0 TCR
NAT-TCR Leesburg Extended Suites 1.0 TCR
NAT-TCR Dianal America, Inc. 1.0 TCR
NAT-TCR CDE - Lanham Office 1.0 TCR
NAT-SIZE Corporate 10 89 FTE
NAT-SIZE Baron Services, Inc. 89 FTE
NAT-SIZE C.T. Wilson Construction Company, Inc. 89 FTE
NAT-SIZE Abbeville Nursing Home, Inc. 89 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: 2020, 2019. 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.