Stonework (i.e., masonry) contractors · California

Omnistone Masonry, Inc.

Hayward, CA · ~30 workers · 4 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.0
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Omnistone Masonry, Inc. runs at 36% of its industry's injury rate - far safer than the typical Stonework (i.e., masonry) contractors workplace, earning a grade A.

Omnistone Masonry, Inc.: 1.0 TCR = 36% of Stonework (i.e., masonry) contractors BLS 2.8 · 4y Form 300A (see methodology below)

Omnistone Masonry, Inc. safety composite

Omnistone Masonry, Inc. scores strongest on total case rate (tcr) (safer than 92% 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).

B

78/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 1 per 100 workers

Safer than 92% 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%).

Omnistone Masonry, Inc. held a steady TCR band

Omnistone Masonry, Inc.'s TCR held near 0.0 from 0.0 in 2017 to 0.0 in 2024. Peak filing year was 2018 at 4.0 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2017=0.0 · 2018=4.0 · 2020=0.0 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 238140 · Hayward, CA AT/BELOW-IND · SMALL

Grade A · TCR 1.0 · 36% of ind

  • DART 0.0 DART
  • RANK #1/77
  • PHOTO Zampell Refractories…
  • BOOK 4y book
  • INJ 1 inj
  • SIZE ~30 FTE

Nearest TCR peer: Zampell Refractories Inc. Pennsylvania Division (0.0 TCR gap)

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

Omnistone Masonry, Inc. in the TCR neighbourhood

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

TCR

What this shows Omnistone Masonry, Inc. averages 1.0 TCR (36% of the Stonework (i.e., masonry) contractors BLS benchmark).

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

Omnistone Masonry, Inc. TCR series: 2017=0 · 2018=4 · 2020=0 · 2024=0 · BLS 2.8

Where Omnistone Masonry, Inc. falls in its industry

703 Stonework (i.e., masonry) cont establishments

Safer than 92% of graded establishments in this industry, whose median TCR is 3.9.

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 77 Stonework (i.e., masonry) cont employers in California.

Omnistone Masonry, Inc. (30 employees, TCR 1.0) among 29 same-industry peers, split at the industry median of 52 employees and a TCR of 3.9 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 0200400600 0246810 Average employees Total Case Rate Omnistone Masonry, Inc.
Omnistone Masonry, Inc. (30 employees, TCR 1.0) among 29 same-industry peers, split at the industry median of 52 employees and a TCR of 3.9

Omnistone Masonry, Inc. has fewer employees than the Stonework (i.e., masonry) contractors median and a lower injury rate than the industry's median TCR of 3.9. 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
2020 0.0 0.0 0 0 0
2018 4.0 4.0 1 0 0
2017 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238140 · CA · Hayward

703 Stonework (i.e., masonry) contractors employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 336 employers in Hayward, 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 Zampell Refractories Inc. Pennsylvania Division 1.0 TCR
NAICS-TCR Restoration Systems Inc. 1.0 TCR
NAICS-TCR Zampell Refractories Inc. Massachusetts Division 1.0 TCR
NAICS-TCR Vaz Construction Inc. 1.0 TCR
STATE-SIZE BZNUR 30 FTE
STATE-SIZE 1780 San Juan Rd. 30 FTE
STATE-SIZE Charter Oaks 30 FTE
STATE-SIZE Greenfields Turf, Inc. 30 FTE
CITY-NEAR California Department of Transportation Facility 518 2,891 FTE
CITY-NEAR California Department of Transportation Facility 100 2,817 FTE
CITY-NEAR California Department of Transportation Facility 117 2,817 FTE
CITY-NEAR St Rose Hospital 929 FTE
NAT-TCR Presto Products 1.0 TCR
NAT-TCR Waukegan 1.0 TCR
NAT-TCR Steele Rubber Products Inc 1.0 TCR
NAT-TCR Houston Foam Plastics 4 1.0 TCR
NAT-SIZE Point South RMC 30 FTE
NAT-SIZE Matrix Label Systems, Inc. 30 FTE
NAT-SIZE Midwest Products, Inc. 30 FTE
NAT-SIZE Lank Oil Company 30 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, 2020, 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.