Mechanical contractors · California

NP Mechanical Inc.

Corona, CA · ~466 workers · 5 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
5.7
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

NP Mechanical Inc. runs at 204% of its industry's injury rate - far more dangerous than the typical Mechanical contractors workplace, earning a grade F.

NP Mechanical Inc.: 5.7 TCR = 204% of Mechanical contractors BLS 2.8 · 5y Form 300A (see methodology below)

NP Mechanical Inc. safety composite

NP Mechanical Inc. scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 28%), 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).

F

34/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 5.71 per 100 workers

Safer than 29% of industry peers

DART rate
F 3.11 per 100 workers

Safer than 28% 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

−1.5

2019→2024

NP Mechanical Inc. injury rate improved

NP Mechanical Inc.'s TCR fell 1.5 from 6.0 in 2019 to 4.4 in 2024. Peak filing year was 2020 at 6.5 TCR. In 2024, DART was 0.54× this establishment's average TCR (severity share of cases).

2019=6.0 · 2020=6.5 · 2022=5.3 · 2023=6.3 · 2024=4.4

OSHA ITA Form 300A scorecard

Establishment book 238220 · Corona, CA ABOVE-IND · MID

Grade F · TCR 5.7 · 204% of ind

  • DART 3.1 DART
  • RANK #391/594
  • PHOTO PGMA, LLC d/b/a Acti…
  • BOOK 5y book
  • INJ 116 inj
  • SIZE ~466 FTE

Nearest TCR peer: PGMA, LLC d/b/a Action Air Conditioning, Heating and Solar Loc 1 (0.0 TCR gap)

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

NP Mechanical Inc. in the TCR neighbourhood

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

TCR

What this shows NP Mechanical Inc. averages 5.7 TCR (204% of the Mechanical contractors BLS benchmark).

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

NP Mechanical Inc. TCR series: 2019=6 · 2020=6.5 · 2022=5.3 · 2023=6.3 · 2024=4.4 · BLS 2.8

Where NP Mechanical Inc. falls in its industry

5,793 Mechanical contractors establishments

Safer than 29% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #391 safest of 594 Mechanical contractors employers in California.

NP Mechanical Inc. (466 employees, TCR 5.7) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3 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 0100200300400500 05101520 Average employees Total Case Rate NP Mechanical Inc.
NP Mechanical Inc. (466 employees, TCR 5.7) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

NP Mechanical Inc. has more employees than the Mechanical contractors median and a higher injury rate than the industry's median TCR of 3.3. 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 4.4 3.1 20 0 0
2023 6.3 5.6 27 1 0
2022 5.3 4.2 23 1 0
2020 6.5 4.7 25 0 0
2019 6.0 5.1 21 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Corona

5,793 Mechanical contractors 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 PGMA, LLC d/b/a Action Air Conditioning, Heating and Solar Loc 1 5.7 TCR
NAICS-TCR Thermal Tech Tampa 5.7 TCR
NAICS-TCR Phillips Plumbing and Mechanical 5.7 TCR
NAICS-TCR Dillett Mechanical Service, Inc. 5.7 TCR
STATE-SIZE Janssen Vacaville 466 FTE
STATE-SIZE CAMDA - MERIDIAN HUB 466 FTE
STATE-SIZE Kite Pharma RDMC 466 FTE
STATE-SIZE Gap Inc. - Corporate 466 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 Select Specialty Hospital - Alle Kiski 5.7 TCR
NAT-TCR GATX - Terre Haute 5.7 TCR
NAT-TCR Bristol 5.7 TCR
NAT-TCR Anthony Timberlands, Inc. Bearden 5.7 TCR
NAT-SIZE Prince George Replenish Ctr 466 FTE
NAT-SIZE Ridgeway Plumbing, Inc. 466 FTE
NAT-SIZE potter concrete ltd 466 FTE
NAT-SIZE IFF South Brunswick 466 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, 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.