Mammoth Mountain Ski Area safety record at a glance
Mammoth Mountain Ski Area has been the subject of 27 Cal/OSHA inspections in California since 2000, opened between Apr 12, 2000 and Dec 30, 2025. 20 of them were accident inspections. 11 of them produced citations, 22 in all: 8 serious, 1 willful. Inspectors proposed $215,370 in penalties; after appeals and settlements the current total is $197,480. The largest single penalty, $126,000, came from an inspection opened Dec 30, 2025 in Mammoth Lakes. 4 worker deaths were investigated. That places the employer at #114 of 122,853 California employers in the database by penalties. The same employer has 2 WARN layoff notices on file with the EDD.
Industry as coded by the inspecting office: Arts, Entertainment, and Recreation; Accommodation and Food Services. Worksites in Mammoth Lakes.
Every inspection, newest first
Click a date for the citations in that inspection.
| Opened | City | Why | Result | Penalty | Closed |
|---|---|---|---|---|---|
| Dec 30, 2025 | Mammoth Lakes | Fatality or catastrophe | 3 citations 2 serious 1 willful | $126,000 | open |
| May 1, 2025 | Mammoth Lakes | Fatality or catastrophe | 3 citations | $2,100 | open |
| Feb 19, 2025 | Mammoth Lakes | Fatality or catastrophe | 3 citations 2 serious | $26,810 | open |
| May 24, 2022 | Mammoth Lakes | Accident | 1 citation | $280 | Nov 13, 2022 |
| May 24, 2022 | Mammoth Lakes | Accident | no citations | $0 | Oct 5, 2022 |
| Jul 22, 2021 | Mammoth Lakes | Accident | 1 citation | $3,000 $5,000 proposed | Jul 28, 2022 |
| May 9, 2017 | Mammoth Lakes | Accident | 1 citation | $5,000 $7,200 proposed | Feb 27, 2018 |
| Mar 13, 2017 | Mammoth Lakes | Accident | no citations | $0 | May 8, 2017 |
| Feb 13, 2017 | Mammoth Lakes | Accident | 1 citation | $400 | Aug 9, 2017 |
| Feb 13, 2017 | Mammoth Lakes | Accident | no citations | $0 | May 8, 2017 |
| Feb 13, 2017 | Mammoth Lakes | Accident | no citations | $0 | May 8, 2017 |
| Jan 30, 2017 | Mammoth Lakes | Accident | no citations | $0 | Jun 14, 2017 |
| Mar 28, 2016 | Mammoth Lakes | Accident | no citations | $0 | Jun 27, 2016 |
| Mar 16, 2016 | Mammoth Lakes | Accident | no citations | $0 | May 16, 2016 |
| Mar 16, 2016 | Mammoth Lakes | Accident | no citations | $0 | Jun 7, 2016 |
| Nov 7, 2013 | Mammoth Lakes | Accident | 2 citations 2 serious | $5,400 | May 6, 2014 |
| Nov 7, 2013 | Mammoth Lakes | Referral | no citations | $0 | Dec 30, 2013 |
| Aug 12, 2013 | Mammoth Lakes | Accident | no citations | $0 | Dec 23, 2013 |
| Jun 21, 2011 | Mammoth Lakes | Accident | no citations | $0 | Jul 21, 2011 |
| Aug 26, 2009 | Mammoth Lakes | Accident | no citations | $0 | Dec 9, 2009 |
| Mar 21, 2008 | Mammoth Lakes | Accident | death no citations | $0 | Jun 30, 2008 |
| Jul 11, 2007 | Mammoth Lakes | Complaint | no citations | $0 | Jul 17, 2007 |
| Sep 5, 2006 | Mammoth Lakes | Complaint | 1 citation | $0 | Sep 15, 2006 |
| Apr 8, 2006 | Mammoth Lakes | Accident | 3 deaths 2 citations 2 serious | $24,750 $36,000 proposed | Feb 14, 2011 |
| Apr 8, 2006 | Mammoth Lakes | Unprogrammed related | 4 citations | $3,740 $6,180 proposed | Feb 14, 2011 |
| Apr 13, 2000 | Mammoth Lakes | Accident | no citations | $0 | Apr 13, 2000 |
| Apr 12, 2000 | Mammoth Lakes | Accident | no citations | $0 | Aug 18, 2000 |
Also recorded as: Mammoth Mountain Ski Area, LLC; Mammoth Mountain Ski Area, LLC.
The rules this employer was cited under
- 8 CCR 3203, Injury and Illness Prevention Program: 5 citations, 2 serious, $42,075
- 8 CCR 3380, Personal protective equipment: 2 citations, 1 serious, $98,435
- 8 CCR 5199.1: 2 citations, $1,400
- 8 CCR 5357: 1 citation, 1 serious, $18,000
- 8 CCR 5351: 1 citation, 1 serious, $18,000
- 8 CCR 3220, Emergency action plan: 1 citation, 1 serious, $6,750
- 8 CCR 342, Reporting serious injuries and deaths: 1 citation, $3,000
- 8 CCR 3650, Industrial trucks, operating rules: 1 citation, 1 serious, $2,700
Accidents investigated
How to read this record
Each row is one inspection by Cal/OSHA (or, rarely, federal OSHA) of one worksite. Why is the reason it was opened. Penalty is the current figure after any appeal or settlement; where it was reduced, the amount the inspector first proposed is shown under it. "Serious" means a realistic possibility of death or serious harm; "willful" and "repeat" carry penalties up to $162,851 each.
Citations document that the employer was told, in writing, what the rule required and when. That knowledge is often the center of a retaliation case: a worker who complained about the hazard an inspector later cited, and was then fired or cut, has a Labor Code 6310 claim, with lost wages and attorney's fees.
Full explainer: how to read a Cal/OSHA record.
If you work, or worked, at Mammoth Mountain Ski Area
Write down what you reported, to whom and when, and what changed afterward: shifts, pay, duties, write-ups. Request the inspection file from the Cal/OSHA district office using the activity number on the inspection page. An injury goes through workers' compensation; a firing, demotion or threat after a safety complaint or injury report is an employment claim with a one-year deadline at the Labor Commissioner (Labor Code 6310) and a longer one in court. Free, confidential review: (800) 371-3088 or send what you have.
Source: U.S. Department of Labor OSHA enforcement data, California inspections. Record last checked Nov 4, 2026. Back to the safety tracker.
About this data: Records come from the U.S. Department of Labor's OSHA enforcement datasets (inspection, violation, accident and accident injury tables), which carry Cal/OSHA's state-plan inspections alongside federal ones. We load every inspection of a California worksite opened since January 1, 2000 and refresh it weekly. Employer names, addresses and industry codes are as the inspecting office recorded them; similar names are grouped where they clearly refer to the same employer. A citation can be reduced, vacated or withdrawn on appeal, and an inspection can stay open for months, so a record can change. Penalties shown as "current" reflect the latest status in the federal file. This page is public information about the employer's regulatory record, not legal advice and not a statement that any person was harmed or any law broken beyond what the record states.