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Mining, Quarrying, Oil & Gas · Ojai, CA

Mosler Rock-Ojai Quarry

According to OSHA enforcement records (2010–2026), Mosler Rock-Ojai Quarry has a relatively clean safety record: 2 violations across 4 inspections. See the full breakdown below.

Lower half by penalty0% serious
$235
OSHA penalties
2
Violations cited
4
OSHA inspections
#97,869
of 100,495 penalized employers

Mosler Rock-Ojai Quarry in Ojai, CA has been the subject of 4 OSHA workplace inspections and 2 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $235. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected Mosler Rock-Ojai Quarry 4 times over 3 years, roughly annually. These inspections resulted in 2 violations, averaging 0.5 per inspection, on the lighter side. Its total OSHA penalty ranks in the lower half of penalized employers nationally. Against the Mining, Quarrying, Oil & Gas industry average of 2 inspections per employer, this runs moderately above peers (1.9x the sector average) on inspection frequency. For comparison, Deer Creek Rock Company INC in Porterville, CA is another mining, quarrying, oil & gas employer with 2 OSHA inspections on record and $225 in current penalties.

0.5
violations per inspection
0.0%
of violations were serious
3%
of penalized employers rank lower

How Mosler Rock-Ojai Quarry compares on OSHA penalties

Total current penalty vs the Mining, Quarrying, Oil & Gas per-employer average

in penalties

What this shows Mosler Rock-Ojai Quarry runs well below peers (0.05x the sector average) in total OSHA penalties.

Source U.S. Department of Labor, OSHA enforcement extracts As of 2026

Where this penalty ranks nationally

Total current OSHA penalty vs every U.S. employer with a nonzero penalty

$235 Top 3% most affordable more affordable than 97% of 100,495 U.S. employers with a penalty

$0–$5,000: 44,435 U.S. employers with a penalty (44%). This entry sits in this band. $5,000–$10,000: 20,628 U.S. employers with a penalty (21%). Above this entry. $10,000–$15,000: 11,165 U.S. employers with a penalty (11%). Above this entry. $15,000–$20,000: 6,629 U.S. employers with a penalty (7%). Above this entry. $20,000–$25,000: 4,205 U.S. employers with a penalty (4%). Above this entry. $25,000–$30,000: 2,885 U.S. employers with a penalty (3%). Above this entry. $30,000–$35,000: 2,052 U.S. employers with a penalty (2%). Above this entry. $35,000–$40,000: 1,483 U.S. employers with a penalty (1%). Above this entry. $40,000–$45,000: 1,120 U.S. employers with a penalty (1%). Above this entry. $45,000–$50,000: 792 U.S. employers with a penalty (1%). Above this entry. $50,000–$55,000: 5,101 U.S. employers with a penalty (5%). Above this entry. This employer $0 $55,000 every penalized U.S. employer, bucketed by value

Each bar is a $5K-wide band; taller bars hold more U.S. employers with a penalty. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Department of Labor, OSHA enforcement extracts · 2026

What the Data Says About Mosler Rock-Ojai Quarry

The federal enforcement record for Mosler Rock-Ojai Quarry in Ojai, CA includes 4 OSHA inspections and 2 violations, translating to 0.50 violations per inspection. Of those violations, 0 (0.0%) were classified as serious, 0 (0.0%) as willful, and 0 (0.0%) as repeat.

OSHA assessed $235 in initial penalties against this employer, later adjusted to a current total of $235 - no reduction from the original assessment. Average penalty per inspection works out to $59. Against the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer, this record runs well below peers (0.05x the sector average).

Inspection activity spans from 2014-12-23 to 2017-08-30, a window of roughly 3 years.

Enforcement detail

OSHA Inspection History

Total Inspections

4

First Inspection

2014-12-23

Last Inspection

2017-08-30

Inspection Span

3 yrs

Violations / Inspection

0.5

Avg Penalty / Inspection

$59

Industry Avg / Inspection

$2,034

What this shows 4 inspections over 3 years, averaging 0.5 violations per visit. That's $59 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,034.

Enforcement detail

Violation Breakdown

0

Serious

0.0% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

2

Other-Than-Serious

100.0% of total

What this shows Serious violations involve hazards that could cause death or serious physical harm. Willful violations indicate intentional or knowing disregard of the law. Repeat violations are for hazards previously cited within the past 5 years.

Enforcement detail

Penalty Analysis

Initial Penalty Assessed

$235

Current Penalty Amount

$235

Penalty Reduction

None

What this shows No reduction on record. The current penalty matches the original OSHA assessment.

Industry Safety Context: Mining, Quarrying, Oil & Gas

How Mosler Rock-Ojai Quarry compares to the Mining, Quarrying, Oil & Gas sector, which has 2,359 employers tracked by PlainWorker.

Metric Mosler Rock-Ojai Quarry Industry Avg
Inspections 4 2.2
Violations 2 3.1
Total Penalty $235 $4,394
Avg Penalty per Inspection $59 $2,034
View all 2,359 employers in Mining, Quarrying, Oil & Gas →

Nearby & Similar Employers in Mining, Quarrying, Oil & Gas

A Teichert & Son, INC.
Sacramento, CA
4 inspections $225
Deer Creek Rock Company INC
Porterville, CA
2 inspections $225
United States Gypsum Company
Borrego Springs, CA
3 inspections $225
Pacific States Transportation, INC.
Corona, CA
4 inspections $225
Franklin Construction INC.
Oroville, CA
2 inspections $225

Compare Mosler Rock-Ojai Quarry vs A Teichert & Son, INC. side-by-side →

Frequently Asked Questions

Is Mosler Rock-Ojai Quarry safe to work at? ▼
Based on OSHA records, Mosler Rock-Ojai Quarry's workplace safety record is relatively clean, with fewer violations than typical. The employer has 2 violations across 4 inspections. Compared to Mining, Quarrying, Oil & Gas industry peers, this is below average for penalties. Review the full inspection history below for details.
How many OSHA violations does Mosler Rock-Ojai Quarry have? ▼
Mosler Rock-Ojai Quarry has 2 OSHA violations on record, including 0 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $235.
How many OSHA inspections has Mosler Rock-Ojai Quarry had? ▼
Mosler Rock-Ojai Quarry has had 4 OSHA inspections, with the first recorded on 2014-12-23 and the most recent on 2017-08-30. This averages 0.5 violations per inspection.
What is the total penalty amount for Mosler Rock-Ojai Quarry? ▼
Mosler Rock-Ojai Quarry has been assessed $235 in current OSHA penalties.
What industry does Mosler Rock-Ojai Quarry operate in? ▼
Mosler Rock-Ojai Quarry operates in the Mining, Quarrying, Oil & Gas sector (NAICS code 212319). This industry has 2,359 employers tracked by PlainWorker, with 5,096 total OSHA inspections and $10.36M in cumulative penalties.
How does Mosler Rock-Ojai Quarry's safety record compare to industry average? ▼
Mosler Rock-Ojai Quarry's total OSHA penalty of $235 is below the Mining, Quarrying, Oil & Gas industry average of $4,394 per employer. The employer has 4 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Deer Creek Rock Company INC in Porterville, CA is a similar mining, quarrying, oil & gas employer with $225 in current penalties.

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What to check next

Mosler Rock-Ojai Quarry's record is one establishment in a larger pattern. Use it as a research checklist, not a verdict on the employer overall.

These figures are the federal enforcement record on file and reflect past inspections, not a statement about current workplace conditions. See the disclaimer for how to read them.

Data Sources & Methodology ▼

Data as of 2026. Source: U.S. Department of Labor (OSHA, WHD).

Source: OSHA Enforcement Data

Inspection and violation records from the Occupational Safety and Health Administration (OSHA), U.S. Department of Labor, covering the period 2010–2026. Includes inspection dates, violation types (serious, willful, repeat, other-than-serious), and penalty amounts. Penalties shown are current assessed amounts and may differ from original citations due to settlement, contest, or reduction.

Source: Wage and Hour Division (WHD)

Compliance actions from the WHD, covering enforcement of the Fair Labor Standards Act (FLSA), including minimum wage, overtime, and child labor violations. Back wages represent amounts owed to affected employees as determined by WHD investigations.

Employer Matching

Employers are matched across OSHA and WHD datasets by name, state, and city. Employers included in PlainWorker have 2 or more OSHA inspections or $1,000+ in WHD back wages. Data is updated monthly from data.dol.gov.

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Every figure on PlainWorker is rendered directly from official U.S. Department of Labor OSHA and Wage & Hour Division enforcement records, no number is typed in by an editor. This employer's ratios (penalty-per-violation, industry comparisons) are computed live from the 4 inspections on record. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.