Root cause accident investigation. Not just a report.
We investigate the incident, find the actual root cause, and document what happened — then handle the Cal/OSHA report if it's reportable, inside the 8-hour window that matters. Southern California based. We travel.
What "serious" actually means
- In-patient hospitalizationReportable
- AmputationReportable
- Loss of an eyeReportable
- Serious/permanent disfigurementReportable
What counts as a reportable incident?
Title 8 Section 330(h) defines a "serious injury or illness" narrowly: in-patient hospitalization for any period other than medical observation or testing, amputation, loss of an eye, or serious or permanent disfigurement. A 2020 update removed the old 24-hour hospitalization threshold — any in-patient stay for treatment qualifies now, not just longer ones. Excluded from the definition: injuries from certain Penal Code violations, and most public street or highway accidents (unless the accident happened in a construction zone).
If an incident meets that definition, Section 342 requires you to report it to Cal/OSHA "immediately" — defined as no more than 8 hours after you knew, or with diligent inquiry should have known, about it. That window stretches to 24 hours only if you can demonstrate exigent circumstances actually prevented a faster report. The minimum civil penalty for missing it entirely is $5,000 — a floor, not a starting point for negotiation.
Why every incident gets investigated
Accident investigation is one of the eight required elements of every Injury and Illness Prevention Program under Title 8 Section 3203 — completely separate from whether a given incident clears the Section 342 reporting bar. A minor first-aid injury or a near miss doesn't trigger the 8-hour call to Cal/OSHA, but it still needs to be investigated and documented under your IIPP. Skipping that step on the "small stuff" is exactly how the same root cause turns into a reportable incident later.
Investigate every time…
- Any injury requiring medical treatment
- Near misses with real injury potential
- Property or equipment damage incidents
- Any incident meeting the §330(h) definition
Root cause investigation essentials
A defensible investigation covers these pieces, whether or not the incident ends up being Cal/OSHA-reportable.
Scene documentation
Photos, measurements, and conditions captured before anything changes.
First priorityWitness interviews
Accounts gathered while memory is fresh, documented consistently.
Same dayRoot cause analysis
What actually caused it, not just what happened on the surface.
IIPP elementCorrective action plan
Specific, assigned, and dated — not a vague promise to "be careful."
Title 8 §3203Cal/OSHA reporting
The §342 call and follow-up, handled inside the 8-hour window.
Title 8 §342Recordkeeping
Form 301 incident report and Form 300 log entry, completed correctly.
Title 8 §14300We handle the investigation, not just the checklist.
From the first call through the corrective action plan, documented the way it needs to hold up later.
Rapid responseOn-site or remote support when an incident happens.
Scene & evidence documentationPhotos, measurements, conditions preserved.
Witness interviewsStructured, consistent, documented same-day.
Root cause analysisThe actual cause, not just the immediate one.
Cal/OSHA §342 reportingFiled within the 8-hour window when required.
Form 301 & 300 log entriesRecordkeeping completed correctly.
Corrective action planSpecific, assigned, and tracked to completion.
Final investigation reportDocumentation that holds up under later review.
How pricing works
Active incident response is time-sensitive and scoped differently than a proactive investigation-readiness program. Every engagement starts with understanding where you are — mid-incident, or building the process before you need it.
Single-incident response, or a standing arrangement for rapid support whenever something happens. Get a quote →
Four steps. No guessing.
Immediate response
Scene preserved, initial facts gathered fast.
Investigation
Evidence, interviews, and documentation completed.
Root cause & report
Findings written up, reviewed with you before it's final.
Reporting & corrective action
Cal/OSHA filed if required, corrective steps tracked.
Based in Southern California. Not limited to it.
Root cause accident investigation for high-hazard facilities across Los Angeles, Orange County, San Diego, and Riverside County — on-site and remote.
Outside these counties? We travel — ask when you request a quote.
The best investigation is the one you never need.
Accident investigation works best paired with the programs that prevent incidents in the first place — PPE hazard assessments, Cal/OSHA compliance, and a current IIPP. Someone still has to track it all.
One incident, handled
- Single investigation and report
- Fixed scope, fixed price
- Good fit for a one-time incident
Compliance-as-a-Service
- Monthly rate, no surprise invoices
- Rapid response available when needed
- RCRA, TRI, AQMD, and stormwater folded in
- Direct line to an EHS professional
Ongoing EHS partner
- Acts as your outsourced EHS department
- IIPP maintenance, training, audit prep
- Scoped to your facility's full regulatory footprint
Common questions on root cause accident investigation
What counts as a "serious injury or illness" under Cal/OSHA?
Under Title 8 Section 330(h), a serious injury or illness means in-patient hospitalization for any period other than medical observation or testing, amputation, loss of an eye, or serious or permanent disfigurement. A 2020 regulatory update removed the old 24-hour hospitalization threshold, so any in-patient stay for treatment now qualifies, not just longer ones.
How fast do I have to report a serious injury to Cal/OSHA?
Within 8 hours of when you knew, or with diligent inquiry should have known, about the injury, illness, or death — that's what "immediately" means under Title 8 Section 342. That window can extend to 24 hours only if you can demonstrate exigent circumstances prevented a faster report.
What's the penalty for reporting late or not at all?
The minimum civil penalty for failing to report a fatality or serious injury or illness under Section 342 is $5,000 — and that's the floor, not a negotiable starting point. Beyond the fine, a missed report tends to shape how the rest of any resulting investigation goes.
Do I need to investigate injuries that aren't Cal/OSHA-reportable?
Yes. Accident investigation is one of the eight required elements of every IIPP under Title 8 Section 3203, independent of whether a given incident meets the Section 342 reporting threshold. A minor injury or a near miss still needs to be investigated and documented under your IIPP — it just doesn't trigger the 8-hour call to Cal/OSHA.
Does Plaid Safety serve companies outside Los Angeles, Orange County, San Diego, and Riverside?
Southern California is home base, but we travel for the right project. Reach out regardless of location.
Had an incident? Building the process before one happens?
Either way, tell us what's going on. If it's active, we move fast. If it's proactive, we'll scope what a readiness program looks like.
Root cause accident investigation. Not just a report.
We investigate the incident, find the actual root cause, and document what happened — then handle the Cal/OSHA report if it's reportable, inside the 8-hour window that matters. Southern California based. We travel.
What "serious" actually means
- In-patient hospitalizationReportable
- AmputationReportable
- Loss of an eyeReportable
- Serious/permanent disfigurementReportable
What counts as a reportable incident?
Title 8 Section 330(h) defines a "serious injury or illness" narrowly: in-patient hospitalization for any period other than medical observation or testing, amputation, loss of an eye, or serious or permanent disfigurement. A 2020 update removed the old 24-hour hospitalization threshold — any in-patient stay for treatment qualifies now, not just longer ones. Excluded from the definition: injuries from certain Penal Code violations, and most public street or highway accidents (unless the accident happened in a construction zone).
If an incident meets that definition, Section 342 requires you to report it to Cal/OSHA "immediately" — defined as no more than 8 hours after you knew, or with diligent inquiry should have known, about it. That window stretches to 24 hours only if you can demonstrate exigent circumstances actually prevented a faster report. The minimum civil penalty for missing it entirely is $5,000 — a floor, not a starting point for negotiation.
Why every incident gets investigated
Accident investigation is one of the eight required elements of every Injury and Illness Prevention Program under Title 8 Section 3203 — completely separate from whether a given incident clears the Section 342 reporting bar. A minor first-aid injury or a near miss doesn't trigger the 8-hour call to Cal/OSHA, but it still needs to be investigated and documented under your IIPP. Skipping that step on the "small stuff" is exactly how the same root cause turns into a reportable incident later.
Investigate every time…
- Any injury requiring medical treatment
- Near misses with real injury potential
- Property or equipment damage incidents
- Any incident meeting the §330(h) definition
Root cause investigation essentials
A defensible investigation covers these pieces, whether or not the incident ends up being Cal/OSHA-reportable.
Scene documentation
Photos, measurements, and conditions captured before anything changes.
First priorityWitness interviews
Accounts gathered while memory is fresh, documented consistently.
Same dayRoot cause analysis
What actually caused it, not just what happened on the surface.
IIPP elementCorrective action plan
Specific, assigned, and dated — not a vague promise to "be careful."
Title 8 §3203Cal/OSHA reporting
The §342 call and follow-up, handled inside the 8-hour window.
Title 8 §342Recordkeeping
Form 301 incident report and Form 300 log entry, completed correctly.
Title 8 §14300We handle the investigation, not just the checklist.
From the first call through the corrective action plan, documented the way it needs to hold up later.
Rapid responseOn-site or remote support when an incident happens.
Scene & evidence documentationPhotos, measurements, conditions preserved.
Witness interviewsStructured, consistent, documented same-day.
Root cause analysisThe actual cause, not just the immediate one.
Cal/OSHA §342 reportingFiled within the 8-hour window when required.
Form 301 & 300 log entriesRecordkeeping completed correctly.
Corrective action planSpecific, assigned, and tracked to completion.
Final investigation reportDocumentation that holds up under later review.
How pricing works
Active incident response is time-sensitive and scoped differently than a proactive investigation-readiness program. Every engagement starts with understanding where you are — mid-incident, or building the process before you need it.
Single-incident response, or a standing arrangement for rapid support whenever something happens. Get a quote →
Four steps. No guessing.
Immediate response
Scene preserved, initial facts gathered fast.
Investigation
Evidence, interviews, and documentation completed.
Root cause & report
Findings written up, reviewed with you before it's final.
Reporting & corrective action
Cal/OSHA filed if required, corrective steps tracked.
Based in Southern California. Not limited to it.
Root cause accident investigation for high-hazard facilities across Los Angeles, Orange County, San Diego, and Riverside County — on-site and remote.
Outside these counties? We travel — ask when you request a quote.
The best investigation is the one you never need.
Accident investigation works best paired with the programs that prevent incidents in the first place — PPE hazard assessments, Cal/OSHA compliance, and a current IIPP. Someone still has to track it all.
One incident, handled
- Single investigation and report
- Fixed scope, fixed price
- Good fit for a one-time incident
Compliance-as-a-Service
- Monthly rate, no surprise invoices
- Rapid response available when needed
- RCRA, TRI, AQMD, and stormwater folded in
- Direct line to an EHS professional
Ongoing EHS partner
- Acts as your outsourced EHS department
- IIPP maintenance, training, audit prep
- Scoped to your facility's full regulatory footprint
Common questions on root cause accident investigation
What counts as a "serious injury or illness" under Cal/OSHA?
Under Title 8 Section 330(h), a serious injury or illness means in-patient hospitalization for any period other than medical observation or testing, amputation, loss of an eye, or serious or permanent disfigurement. A 2020 regulatory update removed the old 24-hour hospitalization threshold, so any in-patient stay for treatment now qualifies, not just longer ones.
How fast do I have to report a serious injury to Cal/OSHA?
Within 8 hours of when you knew, or with diligent inquiry should have known, about the injury, illness, or death — that's what "immediately" means under Title 8 Section 342. That window can extend to 24 hours only if you can demonstrate exigent circumstances prevented a faster report.
What's the penalty for reporting late or not at all?
The minimum civil penalty for failing to report a fatality or serious injury or illness under Section 342 is $5,000 — and that's the floor, not a negotiable starting point. Beyond the fine, a missed report tends to shape how the rest of any resulting investigation goes.
Do I need to investigate injuries that aren't Cal/OSHA-reportable?
Yes. Accident investigation is one of the eight required elements of every IIPP under Title 8 Section 3203, independent of whether a given incident meets the Section 342 reporting threshold. A minor injury or a near miss still needs to be investigated and documented under your IIPP — it just doesn't trigger the 8-hour call to Cal/OSHA.
Does Plaid Safety serve companies outside Los Angeles, Orange County, San Diego, and Riverside?
Southern California is home base, but we travel for the right project. Reach out regardless of location.
Had an incident? Building the process before one happens?
Either way, tell us what's going on. If it's active, we move fast. If it's proactive, we'll scope what a readiness program looks like.