Quest Diagnostics Incorporated safety record at a glance
Quest Diagnostics Incorporated has been the subject of 11 Cal/OSHA inspections in California since 2000, opened between Aug 31, 2000 and Mar 29, 2022. 6 of them were complaint inspections. 6 of them produced citations, 12 in all: 1 serious. Inspectors proposed $21,890 in penalties; after appeals and settlements the current total is $21,105. The largest single penalty, $18,525, came from an inspection opened May 7, 2020 in Valencia. That places the employer at #6,192 of 122,854 California employers in the database by penalties. The same employer has 3 WARN layoff notices on file with the EDD. It also appears in 1 federal wage and hour case.
Industry as coded by the inspecting office: Health Care and Social Assistance; Manufacturing. Worksites in San Juan Capistrano, San Juan Capo, Valencia, Sanger, Los Angeles, Beverly Hills, Riverside, San Mateo.
Every inspection, newest first
Click a date for the citations in that inspection.
| Opened | City | Why | Result | Proposed | Penalty | Closed |
|---|---|---|---|---|---|---|
| Mar 29, 2022 | San Juan Capistrano | Accident | 1 citation | $375 | 0 | open |
| Sep 16, 2021 | San Juan Capo | Accident | 2 citations | $935 | $935 | Jan 3, 2024 |
| May 7, 2020 | Valencia | Accident | 3 citations 1 serious | $18,935 | $18,525 | open |
| Jan 6, 2017 | San Juan Capistrano | Accident | no citations | 0 | 0 | Jul 18, 2017 |
| Jul 15, 2015 | Sanger | Complaint | 3 citations | $745 | $745 | Dec 14, 2016 |
| Jan 5, 2012 | Los Angeles | Complaint | 1 citation | $700 | $700 | Feb 25, 2012 |
| Jan 5, 2012 | Beverly Hills | Complaint | no citations | 0 | 0 | Feb 2, 2012 |
| Mar 7, 2008 | Riverside | Complaint | no citations | 0 | 0 | Apr 3, 2008 |
| Jan 14, 2003 | San Mateo | Complaint | 2 citations | $200 | $200 | Jul 18, 2004 |
| Oct 31, 2000 | San Diego | Accident | no citations | 0 | 0 | Apr 24, 2001 |
| Aug 31, 2000 | West Covina | Complaint | no citations | 0 | 0 | Mar 21, 2001 |
Also recorded as: Quest Diagnostics; Quest Diagnostics Inc; Quest Diagnostics Inc.; Quest Diagnostics, Inc.
The rules this employer was cited under
- 8 CCR 3203, Injury and Illness Prevention Program: 2 citations, $655
- 8 CCR 5193, Bloodborne pathogens: 2 citations, $200
- 8 CCR 4002, Machine guarding, moving parts: 1 citation, 1 serious, $18,000
- 8 CCR 3364, Sanitary facilities: 1 citation, $700
- 8 CCR 3650, Industrial trucks, operating rules: 1 citation, $560
- 8 CCR 4300.29: 1 citation, $300
- 8 CCR 3362, General sanitation requirements: 1 citation, $280
- 8 CCR 3314, Lockout and cleaning of machinery: 1 citation, $225
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. Proposed is the penalty the inspector assessed; penalty is the current figure after any appeal or settlement. "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 Quest Diagnostics Incorporated
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 1, 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.