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Employers › KS

Mining, Quarrying, Oil & Gas · Garden City, KS

Post & Mastin Well Service, INC.

According to OSHA enforcement records (2010–2026), Post & Mastin Well Service, INC. ranks #65,279 of 99,447 penalized U.S. employers by total current penalty, with a concerning safety record: 10 violations across 2 inspections.

Lower half by penalty80% serious
$3,430
OSHA penalties
10
Violations cited
2
OSHA inspections
#65,279
of 99,447 penalized employers

Post & Mastin Well Service, INC. in Garden City, KS has been the subject of 2 OSHA workplace inspections and 10 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $3,430. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.

The record in one line

OSHA has inspected Post & Mastin Well Service, INC. 2 times over 1 year - more than twice a year on average. These inspections resulted in 10 violations, averaging 5.0 per inspection - a notably high rate. According to OSHA enforcement records, its total current penalty ranks #65,279 of 99,447 penalized U.S. employers (the lower half of penalized employers nationally). Of these, 8 were classified as serious - indicating hazards that could cause death or serious harm. Against the Mining, Quarrying, Oil & Gas industry average of 2 inspections per employer, this sits roughly in line with peers (0.9x the sector average) on inspection frequency. For comparison, Rawhide Well Service LLC in Deerfield, KS is another mining, quarrying, oil & gas employer with 2 OSHA inspections on record and $3,430 in current penalties.

5.0
violations per inspection
80.0%
of violations were serious
#65,279
of 99,447 penalized employers

Compliance score

F 17/100
  • F OSHA safety compliance: 10 violations across 2 OSHA inspections (5.0 per inspection), vs. national p10 0.0 (best) / p90 5.5 (worst) among 145,626 inspected employers.

Channels are separate federal datasets: a dimension marked not applicable simply has no record in that dataset for this employer, not a good or bad score.

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How this employer compares on OSHA penalties

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

in penalties

What this shows Post & Mastin Well Service, INC. runs moderately below peers (0.8x 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

$3,430 Top 34% most affordable more affordable than 66% of 99,447 U.S. employers with a penalty

$0–$5,000: 43,959 U.S. employers with a penalty (44%). This entry sits in this band. $5,000–$10,000: 20,304 U.S. employers with a penalty (20%). Above this entry. $10,000–$15,000: 11,027 U.S. employers with a penalty (11%). Above this entry. $15,000–$20,000: 6,546 U.S. employers with a penalty (7%). Above this entry. $20,000–$25,000: 4,175 U.S. employers with a penalty (4%). Above this entry. $25,000–$30,000: 2,877 U.S. employers with a penalty (3%). Above this entry. $30,000–$35,000: 2,036 U.S. employers with a penalty (2%). Above this entry. $35,000–$40,000: 1,493 U.S. employers with a penalty (2%). Above this entry. $40,000–$45,000: 1,095 U.S. employers with a penalty (1%). Above this entry. $45,000–$50,000: 785 U.S. employers with a penalty (1%). Above this entry. $50,000–$55,000: 5,150 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

Does more inspection scrutiny mean more findings?

Each dot is one of 21 Mining, Quarrying, Oil & Gas employers with an OSHA inspection on record, placed by inspections and violations cited. The highlighted dot is Post & Mastin Well Service, INC..

Frequently inspected, many findingsRarely inspected, many findingsFrequently inspected, clean recordBelow median on both1.92.022.02.002.95.88.711.6OSHA inspectionsViolations citedHELLMAN PROPERTIES, OSHA inspections: 2 · Violations cited: 1L&R WELL SERVICES INC, OSHA inspections: 2 · Violations cited: 3RED DIAMOND ENERGY S…, OSHA inspections: 2 · Violations cited: 2PIONEER DRILLING COM…, OSHA inspections: 2 · Violations cited: 11SIDEWINDER DRILLING …, OSHA inspections: 2 · Violations cited: 6BLUE LINE DRILLING C…, OSHA inspections: 2 · Violations cited: 1BJ REES'S ENTERPRISE, OSHA inspections: 2 · Violations cited: 5LEPAGE COMPANY, INC., OSHA inspections: 2 · Violations cited: 0CONTINENTAL RESOURCES, OSHA inspections: 2 · Violations cited: 0TIDEWATER LOGISTICS,…, OSHA inspections: 2 · Violations cited: 5BERG PIPE MOBILE CORP., OSHA inspections: 2 · Violations cited: 1MOUNTAIN WEST OIL FI…, OSHA inspections: 2 · Violations cited: 1VALLEY SAND AND GRAV…, OSHA inspections: 2 · Violations cited: 2CHANDLER AGGREGATES, OSHA inspections: 2 · Violations cited: 1JONAH ENERGY LLC, OSHA inspections: 2 · Violations cited: 0TARGA RESOURCES, OSHA inspections: 2 · Violations cited: 0HARBOR RAIL SERVICES…, OSHA inspections: 2 · Violations cited: 1VULCAN MATERIALS COM…, OSHA inspections: 2 · Violations cited: 0JOHNSON SPECIALTY TO…, OSHA inspections: 2 · Violations cited: 2STRAD OILFIELD SERVI…, OSHA inspections: 2 · Violations cited: 4Post & Mastin Well S…, OSHA inspections: 2 · Violations cited: 10
Post & Mastin Well Service, INC. has 2 OSHA inspections on record and 10 violations cited. The crosshair marks the median among these Mining, Quarrying, Oil & Gas peers. Across this sector's tracked employers, more inspections is moderately associated with more violations found -- not a coincidence, but not a guarantee either.

Post & Mastin Well Service, INC. in the Mining, Quarrying, Oil & Gas enforcement ledger

Among 1,117 Mining, Quarrying, Oil & Gas employers with OSHA penalties on file, Post & Mastin Well Service, INC. ranks #570 at $3,430 current penalty.

How Post & Mastin Well Service, INC. Compares

Post & Mastin Well Service, INC.'s 5.00 violations per inspection compares to the Mining, Quarrying, Oil & Gas sector average of 3.1 violations per employer.

Against the Mining, Quarrying, Oil & Gas industry average of $4,539 per employer, this employer's current OSHA penalty runs moderately below peers (0.8x the sector average).

Enforcement detail

OSHA Inspection History

Total Inspections

2

First Inspection

2015-01-15

Last Inspection

2015-01-15

Inspection Span

1 yr

Violations / Inspection

5.0

Avg Penalty / Inspection

$1,715

Industry Avg / Inspection

$2,042

What this shows 2 inspections over 1 year, averaging 5.0 violations per visit. That's $1,715 per inspection vs. the Mining, Quarrying, Oil & Gas average of $2,042.

Enforcement detail

Violation Breakdown

8

Serious

80.0% of total

0

Willful

0.0% of total

0

Repeat

0.0% of total

2

Other-Than-Serious

20.0% 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

$4,900

Current Penalty Amount

$3,430

Penalty Reduction

30.0%

What this shows Penalties were reduced by $1,470 from the initial assessment of $4,900. Reductions may result from informal settlements, formal contests, or negotiated agreements with OSHA.

Industry Safety Context: Mining, Quarrying, Oil & Gas

How Post & Mastin Well Service, INC. compares to the Mining, Quarrying, Oil & Gas sector, which has 2,294 employers tracked by PlainWorker.

Metric Post & Mastin Well Service, INC. Industry Avg
Inspections 2 2.2
Violations 10 3.1
Total Penalty $3,430 $4,539
Avg Penalty per Inspection $1,715 $2,042
View all 2,294 employers in Mining, Quarrying, Oil & Gas →

Nationwide Mining, Quarrying, Oil & Gas peers with similar penalties or inspection counts

Two OSHA-record peer sets for Post & Mastin Well Service, INC., both outside KS so the neighborhoods are not geographic containment.

Similar current OSHA penalty

Nearest same-sector employers by current assessed penalty ($3,430 here).

Papich Construction Company, INC. $3,440 CA Howcroft Field Services $3,400 UT Enterprise Products Partners L.P. $3,400 CO Trinity LW, LLC $3,465 CA

Similar OSHA inspection count

Same-sector employers with a comparable inspection history outside this state (2 inspections here).

Hellman Properties 2 insp. Seal Beach, CA L&R Well Services INC 2 insp. Artesia, NM Red Diamond Energy Services, INC. 2 insp. Stanton, TX Pioneer Drilling Company 2 insp. Rio Grande City, TX

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

Showing 5 of 2293 other employers tracked in this sector.

Rawhide Well Service LLC
Deerfield, KS
2 inspections $3,430
Papich Construction Company, INC.
Coalinga, CA
4 inspections $3,440
Center Rock, Inc.
Berlin, PA
0 inspections $0
Howcroft Field Services
Naples, UT
2 inspections $3,400
Enterprise Products Partners L.P.
Parachute, CO
2 inspections $3,400

Compare Post & Mastin Well Service, INC. vs Rawhide Well Service LLC side-by-side →

What to do with this record

Use Post & Mastin Well Service, INC.'s enforcement history as one data point, not the whole picture.

  • A single employer's record can look unusual in isolation. Compare Post & Mastin Well Service, INC. against Rawhide Well Service LLC, a similarly-sized employer in the same sector, before drawing conclusions. Compare side-by-side
  • See whether Post & Mastin Well Service, INC.'s inspection and penalty record is typical for Mining, Quarrying, Oil & Gas or an outlier against the sector's own average. View the Mining, Quarrying, Oil & Gas sector
  • Before you accept a job or raise a safety concern, search any employer for its own OSHA inspection history the same way you found this one. Search employers

Figures reflect closed OSHA and WHD federal enforcement actions on record (2010–2026); not every workplace issue results in an inspection or investigation.

Frequently Asked Questions

Is Post & Mastin Well Service, INC. safe to work at? ▼
Based on OSHA records, Post & Mastin Well Service, INC.'s workplace safety record is concerning, with multiple serious compliance issues. The employer has 10 violations across 2 inspections, including 8 serious violations. 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 Post & Mastin Well Service, INC. have? ▼
Post & Mastin Well Service, INC. has 10 OSHA violations on record, including 8 serious, 0 willful, and 0 repeat violations. The total current penalty amount is $3,430.
How many OSHA inspections has Post & Mastin Well Service, INC. had? ▼
Post & Mastin Well Service, INC. has had 2 OSHA inspections, with the first recorded on 2015-01-15 and the most recent on 2015-01-15. This averages 5.0 violations per inspection.
What is the total penalty amount for Post & Mastin Well Service, INC.? ▼
Post & Mastin Well Service, INC. has been assessed $3,430 in current OSHA penalties, reduced from an initial assessment of $4,900 (a 30.0% reduction).
Does Post & Mastin Well Service, INC. have any serious or willful violations? ▼
Yes. Post & Mastin Well Service, INC. has 8 serious violations. Serious violations involve hazards likely to cause death or serious physical harm. Willful violations indicate the employer intentionally or knowingly disregarded the law.
What industry does Post & Mastin Well Service, INC. operate in? ▼
Post & Mastin Well Service, INC. operates in the Mining, Quarrying, Oil & Gas sector (NAICS code 213112). This industry has 2,294 employers tracked by PlainWorker, with 5,098 total OSHA inspections and $10.41M in cumulative penalties.
Where does Post & Mastin Well Service, INC. rank nationally on OSHA penalties? ▼
Among the 99,447 U.S. employers with a nonzero current OSHA penalty in PlainWorker's corpus, Post & Mastin Well Service, INC. ranks #65,279 (the lower half of penalized employers nationally). The ordinal is a live COUNT of employers with a lower total_current_penalty; see the methodology page for the exact derivation.
How does Post & Mastin Well Service, INC.'s safety record compare to industry average? ▼
Post & Mastin Well Service, INC.'s total OSHA penalty of $3,430 is below the Mining, Quarrying, Oil & Gas industry average of $4,539 per employer. The employer has 2 inspections compared to the industry average of 2.2 per employer. For a direct comparison, Rawhide Well Service LLC in Deerfield, KS is a similar mining, quarrying, oil & gas employer with $3,430 in current penalties.
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.

Verify with OSHA establishment search →

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 2 inspections on record. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026.