Lighting Fixture Manufacturing · California
Cerno LLC
Aliso Viejo, CA · ~36 workers · 6 years of OSHA Injury Tracking Application data.
- D
- Poor Safety Record
- 5.3
- Avg TCR
- 3.3
- Industry avg
- 0
- Fatalities
The verdict
Cerno LLC runs at 159% of its industry's injury rate - more dangerous than the typical Lighting Fixture Manufacturing workplace, earning a grade D.
- D
- Poor Safety Record
- 5.3
- avg TCR · per 100 workers
- 3.3
- industry benchmark (BLS)
- 11
- recordable injuries tracked
Grade compares Cerno LLC's OSHA Total Case Rate of 5.3 to the Lighting Fixture Manufacturing BLS benchmark of 3.3 (159% of benchmark) across 6 years of Form 300A filings (2016–2024). This reflects reported recordable injuries, not an independent safety inspection -- underreporting is a known limitation of employer self-recordkeeping.
Injury rate over time
Cerno LLC's yearly Total Case Rate, against the 3.3 industry benchmark.
Trend analysis for Cerno LLC
Between 2019 and 2024, Cerno LLC's Total Case Rate improved from 13.3 to 3.6 recordable injuries per 100 full-time workers, a 73% decrease across 5 years of OSHA reporting.
The safest year on record was 2021, at a TCR of 2.8, while 2019 saw the highest rate, at 13.3, a spread of 10.5 points between the best and worst reporting years. That's a wide swing relative to the establishment's overall rate, worth checking the year-by-year table below for whether a single severe year is driving the average, rather than a sustained trend.
Summed across those 6 reporting years, Cerno LLC recorded 11 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 6-year trend above alongside establishment size, since a larger workforce naturally accumulates more raw incidents even at a lower per-100-worker rate.
Verify This Employer with OSHA
The 11 injuries shown on this page for Cerno LLC are sourced from its own 6 years of mandatory OSHA Form 300A summaries. Cross-check the underlying establishment record directly against the federal source, name, NAICS classification, recordable case totals, and inspection history are all searchable on OSHA's Establishment-Specific Injury and Illness Data system.
Verify on OSHA Establishment SearchSource: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 335132 - Lighting Fixture Manufacturing.
DART Rate, Transparent Calculation (2024)
What is the DART rate formula?
DART (Days Away, Restricted, or Transferred) is computed by OSHA as incidents × 200,000 ÷ hours worked. The 200,000-hour denominator equals roughly 100 full-time workers, which lets establishments of very different sizes be compared directly.
0 DART incidents × 200,000 ÷ 54,840 hours worked = 0.00 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Cerno LLC (this establishment) | 5.26 | OSHA ITA Form 300A, 6-year avg |
| California state avg (all industries) | 5.64 | OSHA ITA, state-level rollup |
Industry benchmarks: Bureau of Labor Statistics, Injuries, Illnesses, and Fatalities (IIF) program
Reportable Incident Timeline
Year-by-year reportable incidents (recordable injuries + illnesses + fatalities) submitted by Cerno LLC to OSHA's Injury Tracking Application. Each row anchors to OSHA's inspection records search where you can pull the underlying inspection case numbers and citations for that establishment-year.
- 2024: 1 reportable incidents · 1 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2023: 2 reportable incidents · 2 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2022: 1 reportable incidents · 1 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2021: 1 reportable incidents · 1 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2020: 1 reportable incidents · 1 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2019: 5 reportable incidents · 5 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
Source: OSHA Inspection Information System (IMIS) - inspection case-number records
Year-by-Year Safety Data
| Year | TCR | DART | Injuries | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2024 | 3.6 | 0.0 | 1 | 0 | 0 |
| 2023 | 5.6 | 5.6 | 2 | 0 | 0 |
| 2022 | 2.8 | 2.8 | 1 | 0 | 0 |
| 2021 | 2.8 | 0.0 | 1 | 0 | 0 |
| 2020 | 3.3 | 3.3 | 1 | 0 | 0 |
| 2019 | 13.3 | 10.7 | 5 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Cerno LLC's reported OSHA injury record versus its Lighting Fixture Manufacturing peers, not a verdict on whether any single site is safe today.
- At 159% of the Lighting Fixture Manufacturing benchmark, Cerno LLC reports more injuries than typical peers, ask specifically how the employer is reducing them. Know your rights
- Grades reflect 2016–2024 filings; check the latest establishment record straight from OSHA, or look up a different employer. Look up another
Safety grades reflect employers' self-reported OSHA Form 300A filings from 2016 to 2024 and can lag current conditions. A grade is not a guarantee that any specific workplace is safe or unsafe today. See our methodology and disclaimer.
Frequently Asked Questions
What is Cerno LLC's safety grade?
How many injuries has Cerno LLC reported?
Similar Employers
Matched by safety record across the industry, by workforce size within California, and by nearby establishments in Aliso Viejo - a different peer set than the category browse links below.
Similar TCR (~5.3)
Similar size (~36 workers)
Read our methodology - how this data is sourced, computed, and verified.
Every figure and grade on PlainSafetyScore is computed directly from OSHA's published Injury Tracking Application data and BLS industry benchmarks, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these safety grades, or report a data error. Data current as of 2016-2024 OSHA ITA release.