What must be reported after a line clearance incident
A work-related death or serious injury goes to the Division of Occupational Safety and Health within eight hours under 8 CCR 342(a), measured from when the employer knew or with diligent inquiry would have known. Section 330(h) defines serious as inpatient hospitalization other than for observation, amputation, loss of an eye, or serious permanent disfigurement.
A trimmer in a bucket takes a phase contact on a 12 kV distribution span at 2:10 on a Tuesday afternoon. The second qualified trimmer brings him down, the ambulance takes him to the nearest emergency department, and he is treated and released at 6:40 the same evening.
Six reporting duties were created at 2:10. They run to six different recipients on six different clocks, the shortest of which is two hours and the longest of which is five years. The eight hour call to Cal/OSHA is the one everybody knows about, and on those facts it is the only one of the six that stays dark.
The eight hour call and when the eight hours start
The duty sits in two places that say the same thing. Section 342(a) of Title 8 is the regulation:
Every employer shall report immediately to the Division of Occupational Safety and Health any serious injury or illness, or death, of an employee occurring in a place of employment or in connection with any employment.
Labor Code section 6409.1(b) is the statute behind it, and it prices the failure. An employer who violates that subdivision may be assessed a civil penalty of not less than five thousand dollars.
Section 342(a) then defines the word that matters:
Immediately means as soon as practically possible but not longer than 8 hours after the employer knows or with diligent inquiry would have known of the death or serious injury or illness.
The clock is keyed to knowledge, and the phrase "with diligent inquiry would have known" pushes the start back to the earliest person who could have told the company. On the 2:10 contact, the foreman is standing under the span. The office hears about it when the general foreman calls at 6:00. The eight hours started at 2:10, which makes the report due by 10:10 that night.
Exigent circumstances buy 24 hours instead of eight, and section 342(a) puts the burden on the employer to demonstrate them. A crew four hours up a fire road with no signal is the case the clause was written for. A safety manager on vacation falls outside it.
The report goes by telephone or through an online mechanism the Division is authorized to build. Until it does, section 342(a) allows telephone or email. Cal/OSHA's employer reporting page, revised July 2025, still names no online mechanism, asks employers to call 24 hours a day and 7 days a week, and offers email only to an employer who cannot call.
The Division's own FAQ on the 2020 amendments says the call should go to the nearest enforcement district office, and the district office list is organized by the county the work is in rather than by where the contractor is headquartered.
What counts as serious, and what a treated and released visit does not
Section 342(a) hands the definition to section 330(h):
any injury or illness occurring in a place of employment or in connection with any employment that requires inpatient hospitalization for other than medical observation or diagnostic testing, or in which an employee suffers an amputation, the loss of an eye, or any serious degree of permanent disfigurement
Four triggers, and each one is a different kind of fact.
Trigger | When you know | What it turns on |
Inpatient hospitalization, other than observation or diagnostic testing | Within hours, from the admission | Whether the hospital admitted him, and why |
Amputation | At the scene, usually | The loss of tissue, at any level |
Loss of an eye | At the scene or at the hospital | The eye, not the vision |
Any serious degree of permanent disfigurement | Weeks or months later | A judgment nobody can make at 6:40 p.m. |
The trimmer who is treated and released has none of the first three. The fourth is open. An electrical contact burn across a forearm can heal into a serious degree of permanent disfigurement, and when it does, the duty that did not exist on Tuesday exists on the day the employer learns it. The eight hours run from that knowledge, under the same sentence in section 342(a).
The hospitalization prong runs at any length. Before January 1, 2020, it required 24 hours. Assembly Bill 1805 removed the 24 hour floor and added the carve-out for observation and diagnostic testing.
A trimmer admitted at 11:00 p.m. and discharged at 9:00 the next morning for a cardiac workup after a contact is reportable if he was admitted for treatment, and falls outside the definition if he was held for observation. The discharge summary is the document that settles it, and it is worth reading before the call rather than after.
The public street exclusion and the construction zone inside it
Section 330(h) ends with an exclusion that a line clearance crew standing in a traffic lane should read twice:
but does not include any injury or illness or death caused by an accident on a public street or highway, unless the accident occurred in a construction zone
AB 1805 wrote the construction zone clause in, effective January 1, 2020. Neither Title 8 nor the Labor Code defines construction zone for this purpose. A crew running a lane closure and a flagger to trim a span over a state route puts the question squarely, because the work looks like a construction zone from the road and is written up under the tree work safety orders.
This is genuinely unsettled, and it is settled one case at a time. The Division decides first, on inspection. The Occupational Safety and Health Appeals Board decides a contested one. The practical answer is to report it, say on the call that the crew was working behind a lane closure, and let the Division apply its own exclusion. An unreported injury that turns out to be inside the definition carries a five thousand dollar floor. A reported one that turns out to be outside it carries a wasted eight minutes.
What the closure had to look like, and who was allowed to hold the sign, is a separate set of duties. It is also the first set of facts the Division will ask about.
The definition moved once and the regulation caught up late
Section 342(a) tells the reader that serious injury or illness is defined in section 330(h). Section 330(h) was last touched by a change without regulatory effect filed February 10, 2020, which conformed it to AB 1805. Section 342 itself was conformed on January 28, 2020.
The statute has moved again since. The reporting duty in section 6409.1(b) runs on Labor Code section 6302(h), which Senate Bill 20 amended effective January 1, 2026. That subdivision now closes with a sentence section 330(h) still lacks: serious injury or illness includes silicosis and silica-related lung cancer. Silicosis belongs to stone fabrication rather than to tree work, so the divergence is about where to look. The Labor Code is the text the Legislature moved, and the broader of the two readings is the cheaper one to follow.
Ten items, and the one about the scene
Section 342(c) sets out what the call has to carry, if available. The list is the same for a trimmer as for a warehouse, and three of the ten are harder on a span than in a building.
Item | What section 342(c) asks for | What a line clearance crew has |
(1) | Time and date of accident | The time the crew called dispatch, which is not the time of contact |
(2) | Employer's name, address and telephone number | The contractor, not the utility whose circuit it is |
(3) | Name and job title, or badge number of person reporting | Usually the safety manager, who was not there |
(4) | Address of site of accident or event | A pole number and a circuit name, or latitude and longitude |
(5) | Name of person to contact at site | The general foreman, if he is still on scene |
(6) | Name and address of injured employee | Payroll has it |
(7) | Nature of injury | What the paramedics said, in their words |
(8) | Location where injured employee was moved to | The receiving hospital |
(9) | List and identity of other law enforcement agencies present | The CHP or sheriff unit that closed the lane, by unit number |
(10) | Description of accident and whether the scene or instrumentality has been altered | The hard one |
Item (4) is the one to solve before it is needed. A span is located by pole number and circuit name, which a Division duty officer taking the call cannot navigate to. Carry the nearest cross street and a set of coordinates on the same sheet the crew already carries for the heat illness emergency response directions.
Item (10) is the one that changes behavior. No California rule requires the scene of an accident to be preserved. Section 342(c)(10) requires the report to say whether it was altered, and Labor Code section 6313(a) requires the Division to investigate a fatal accident or one causing a serious injury unless it determines an investigation is unnecessary.
On a line clearance job the instrumentality is frequently not the contractor's property at all. It is a conductor, and the utility will patrol it, repair it and re-energize it on the utility's schedule, which is measured in hours.
That makes photographs the only record that survives. Photograph the bucket position, the saw, the rope and rigging, the limb, and the conductor with something in frame for scale, before anybody touches any of it. Then answer item (10) honestly. Moving the rigging to get a man down is lawful and expected. An altered scene reported as undisturbed is a credibility problem in front of the person deciding whether a violation was serious.
The utility's clock is two hours and your call starts it
The shortest clock in the whole sequence belongs to somebody else. Resolution ESRB-12 gives an electrical corporation two hours during working hours, and four outside them, to notify CPUC staff of a reportable incident. One of the four triggers is a personal injury requiring "medical attention from a healthcare professional at a hospital or other medical facility" and attributable or allegedly attributable to utility-owned facilities. The mechanics of that filing and the twenty business day written report behind it belong to the electric incident and ignition reporting page.
Two things in it are addressed to the contractor.
The first is the threshold. The utility's criterion reaches any injury treated at a hospital or other medical facility, while section 330(h) requires an admission. The 6:40 discharge therefore sits inside the utility's trigger and outside Cal/OSHA's. The utility's two hours on it expired at 4:10 that afternoon.
The second is item (d) of the two hour notice, which asks for "any injuries sustained either by a utility employee, contractor, or civilian that may have resulted from the incident." The Commission wrote the contractor's injured employee into the utility's notice. The utility learns about him from the call the crew makes.
General Order 95 Rule 17, modified December 20, 2024 by the same resolution, then requires the utility to have procedures for investigating "incidents resulting from electrical contact" that meet the same criteria. That investigation will want the crew's account, the foreman's name and the photographs.
No safety order sets a deadline for that call. The subcontract does, usually within the hour, and the utility's own two hour exposure is the reason it is that short. The pre-work call to the utility is a separate duty and lives in section 2951.
Two working days, in the standard the crew already works under
The limb that came off the primary took the covering off eighteen inches of conductor, and the crew walked away unhurt. Cal/OSHA stays out of it. The utility is owed something, and the duty is federal.
29 CFR 1910.269(a)(3)(ii)(C) requires the contract employer to:
advise the host employer of any unanticipated hazardous conditions found during the contract employer's work that the host employer did not mention under paragraph (a)(3)(i) of this section. The contract employer shall provide this information to the host employer within 2 working days after discovering the hazardous condition.
Damaged conductor is an unanticipated hazardous condition, and a limb resting on a phase is another. The two working days run from discovery, which is usually the afternoon it happened rather than the day the circuit is finished. The contract employer here is the tree company and the host employer is the utility, in the same federal vocabulary paragraph (r) uses to sort the crew.
One working day and five days on the compensation side
The workers' compensation duties run on their own triggers, and the trigger is lower than the Cal/OSHA one. It is lost time beyond the date of injury, or medical treatment beyond first aid. A prescription written in the emergency department meets it.
What | Due | To whom | Source |
Claim form and notice of potential eligibility for benefits | 1 working day from notice or knowledge | The injured employee, or the dependents | |
Employer's Report of Occupational Injury or Illness, Form 5020 | 5 days from knowledge | The insurer, or the Division for a self-insured employer | |
Amended Form 5020, where the employee later dies | 5 days from learning of the death | The same recipient | Labor Code 6409.1(a), 8 CCR 14001(b) |
Doctor's First Report of Occupational Injury or Illness | 5 days from the initial examination | The Division of Workers' Compensation and the employer or insurer |
The last row is the physician's filing rather than the employer's, and it is on the table for one reason. It arrives at the insurer with a description of how the injury occurred taken from the injured employee. A contractor whose own Form 5020 tells a different story about the same afternoon has created the inconsistency before anyone asks about it.
Seven days on the log, five years in the file
A line clearance injury that produces days away from work, restricted work or transfer, medical treatment beyond first aid, loss of consciousness, death, or a significant injury diagnosed by a physician is recordable under section 14300.7. That section also carries the cross reference that keeps the two systems tied together, reminding the employer to make the eight hour call under section 342.
Section 14300.29(b)(3) sets the entry deadline:
You must enter each recordable injury or illness on the Cal/OSHA Form 300 and Cal/OSHA Form 301 Incident Report within seven (7) calendar days of receiving information that a recordable injury or illness has occurred.
Calendar days rather than working days, and counted from information received rather than from the incident. Section 14300.33(a) then keeps the 300, the 300A, the 301 reports and the privacy case list for five years following the end of the calendar year they cover, and requires the 300 to be updated during those five years when a case changes.
The annual summary has one provision written for crews like these. Section 14300.32 requires a company executive to certify the Form 300A, posted no later than February 1 and left up until April 30. Subsection (b)(7) then adds that employees who do not normally report at least weekly to the posting location have to be handed or mailed the summary instead. A crew on a three month storm assignment two counties away, reporting to a staging yard rather than to the home yard, is exactly the crew that subsection names.
March 2, and which appendix the establishment lands in
Section 14300.41 sets the electronic submission, and its deadline is March 2 for the prior calendar year. What goes up depends on headcount and on the industry the establishment is classified in.
Establishment | What is submitted | Paragraph |
250 or more employees, required to keep records | Form 300A | 14300.41(a)(1)(i) |
20 to 249 employees, industry listed in Appendix H | Form 300A | 14300.41(a)(1)(ii) |
100 or more employees, industry listed in Appendix I | Forms 300 and 301, plus the 300A | 14300.41(a)(2) |
The appendices are where a tree crew's classification starts to matter. Appendix H lists NAICS 5617, services to buildings and dwellings, and omits 1153. Appendix I lists NAICS 1153, support activities for forestry, and omits 5617. Those are the two four digit groups a line clearance contractor is commonly filed under, and the rule puts them on opposite sides.
So a 140 employee establishment filed under 5617 uploads one form on March 2, and a 140 employee establishment filed under 1153 uploads three, including case-level detail from every Form 301. That code travels with whatever the establishment itself reports, rather than with anything the Division assigns. The section was last amended on October 24, 2024, which makes both appendices worth re-reading rather than remembering.
The section number California never used
Federal recordkeeping and federal reporting live in the same part. 29 CFR 1904.39 is the reporting rule, sitting among the recording rules.
California put its recordkeeping rules in Article 2 of chapter 7 and its reporting rule somewhere else entirely. The article's table of contents runs 14300.36, then 14300.38, then 14300.40. There is no 14300.39. The duty that would sit there is in section 342, in a different chapter of Title 8, under the regulations of the Division of Occupational Safety and Health rather than those of the Division of Labor Statistics and Research.
For a contractor running crews in other states, the deadlines are not the same either.
California, section 342 | Federal, 1904.39 | |
Death | 8 hours | 8 hours |
Inpatient hospitalization | 8 hours | 24 hours |
Amputation | 8 hours | 24 hours |
Loss of an eye | 8 hours | 24 hours |
Serious degree of permanent disfigurement | 8 hours | No reporting duty |
Clock starts | Employer knows or with diligent inquiry would have known | The employer or an agent receives the information |
California is shorter on three rows and has a trigger the federal rule does not carry. A national incident procedure written to the federal deadlines is late in California by sixteen hours on every hospitalization.
The investigation California leaves blank and the form that fills it
California requires every employer to have an investigation procedure and never says what it produces. Section 3203(a)(5), which reaches a tree work employer through the route described in the qualification file, is one line:
Include a procedure to investigate occupational injury or occupational illness.
No contents, no deadline, no retention period, no form. What fills the gap is a document that arrives later, from the other direction. Before the Division issues a citation alleging a serious violation, Labor Code section 6432(b) requires it to make a reasonable attempt to determine and consider four things:
training for employees and supervisors relevant to preventing exposure to the hazard
procedures for discovering, controlling access to, and correcting the hazard
supervision of employees exposed or potentially exposed to the hazard
procedures for communicating the employer's health and safety rules and programs
Subsection (b)(2) says how it asks: a standardized form carrying the alleged violation descriptions, delivered not less than 15 days before the citation issues, soliciting the employer's account. That is the outline of the investigation nobody required. An employer who wrote those four answers in the week after the incident, while the crew could still be interviewed, answers the form from a file. An employer starting from a blank page writes them eleven months later from memory, for a reader deciding whether the violation was serious.
Where it bites
Back to 2:10 on a Tuesday, with the trimmer treated and released.
Clock | Starts at | Runs | Owed to | Source |
Utility's CPUC notice | The utility learning of it | 2 hours, or 4 outside working hours | CPUC staff | Resolution ESRB-12 |
Claim form | Notice or knowledge of injury | 1 working day | The injured employee | Labor Code 5401(a) |
Host employer notice, if a hazardous condition was left | Discovery of the condition | 2 working days | The utility | 29 CFR 1910.269(a)(3)(ii)(C) |
Form 5020 | Employer knowledge | 5 days | The insurer, or the Division | Labor Code 6409.1(a) |
Form 300 and Form 301 entry | Information received | 7 calendar days | The employer's own records | 8 CCR 14300.29(b)(3) |
Cal/OSHA report | Employer knows or should have known | 8 hours | The nearest district office | 8 CCR 342(a) |
Record retention | End of the calendar year | 5 years | The file | 8 CCR 14300.33(a) |
The eight hour row is the only one that stays dark on these facts, and it is the row most incident procedures are built around. The two hour row above it belongs to somebody else, and if the crew called the utility at 2:15 it expired at 4:15, while the trimmer was still in the waiting room.
One clock runs the other way. Labor Code section 6317(e)(1) bars a citation more than six months after the occurrence of the violation, which is the rule a contractor relies on for a field violation. Recordkeeping is carved out of it.
For a violation of the recordkeeping duties, an occurrence "continues until it is corrected, or the division discovers the violation, or the duty to comply with the violated requirement ceases to exist." The rigging mistake on the Tuesday span becomes uncitable in six months. The Form 300 entry that was never made stays citable until somebody corrects it or the Division finds it.
Further reading
Cal/OSHA section 2951: line clearance tree trimming operations: The work rules a post-incident citation gets written against, and the utility call that happens before the saw starts.
Aerial rescue readiness on a line clearance crew: What the second person does in the minutes before any of these clocks matter.
Documenting a line clearance qualification so a prime can verify it: The training file the Division asks for once it arrives, and the section 3203 route that makes it mandatory.
Frequently asked questions
How long does a California employer have to report a serious injury to Cal/OSHA?
Eight hours. Section 342(a) of Title 8 defines immediately as as soon as practically possible but not longer than 8 hours after the employer knows or with diligent inquiry would have known of the death or serious injury or illness. If the employer can demonstrate that exigent circumstances exist, the report may be made no longer than 24 hours after the incident. Labor Code section 6409.1(b) carries the same duty and provides that an employer who violates it may be assessed a civil penalty of not less than five thousand dollars.
Is an emergency room visit a reportable serious injury in California?
Not on its own. Section 330(h) of Title 8 requires inpatient hospitalization for other than medical observation or diagnostic testing, an amputation, the loss of an eye, or any serious degree of permanent disfigurement. A trimmer treated in an emergency department and released the same evening has none of the first three. The fourth is a judgment made later, and a contact burn that heals badly can put the case back inside the definition.
Does a contact that injures nobody have to be reported to Cal/OSHA?
No. Section 342 is triggered by a death or a serious injury or illness, and a contact with no injury triggers neither. On a job governed by 29 CFR 1910.269, paragraph (a)(3)(ii)(C) still requires the contract employer to advise the host employer of any unanticipated hazardous conditions found during the work, within 2 working days after discovering the condition. Damaged conductor left behind by a limb strike is such a condition.
Who reports a line clearance injury to the CPUC?
The utility, not the tree contractor. Resolution ESRB-12 requires an electrical corporation to notify Commission staff within two hours during working hours, or four hours outside them, of an incident attributable or allegedly attributable to utility-owned facilities that results in personal injury requiring medical attention from a healthcare professional at a hospital or other medical facility. Item (d) of that notice is any injuries sustained either by a utility employee, contractor, or civilian. The utility learns of the injury from the contractor's call.
How quickly does a line clearance injury have to go on the Cal/OSHA 300 log?
Seven calendar days. Section 14300.29(b)(3) of Title 8 requires each recordable injury or illness to be entered on the Cal/OSHA Form 300 and the Form 301 Incident Report within seven calendar days of receiving information that a recordable injury or illness has occurred. Section 14300.33(a) then requires the 300, the 300A, the 301 reports and any privacy case list to be kept for five years following the end of the calendar year they cover.
