California Workers' Compensation Law Sets Employer Reporting Duties

California Labor Code § 3700 generally requires employers to obtain workers' compensation insurance from an authorized insurer or secure approval to self-insure. Businesses with at least one employee generally fall under this requirement, including those employing part-time workers.

Self-insurance requires a certificate of consent from the Director of Industrial Relations. Simply reserving company funds for potential injury expenses does not satisfy the law.

Employers should verify policy dates, covered entities, and claims-administrator information before assigning workers to their duties. A broader workplace compliance review may address related employment obligations, but it does not replace mandatory coverage.

Labor Code § 3550 requires covered employers to display a workers' compensation notice where employees can readily read it. The notice must identify the insurer or self-insured status, explain how to report injuries, and provide relevant claims information.

Where employees speak Spanish, employers must also post the notice in Spanish. Since January 1, 2025, the required notice has included information about an injured worker's right to consult a licensed attorney.

Under § 3551, employers generally must provide written workers' compensation information to new hires at hiring or by the end of their first pay period. Maintaining current notices and onboarding records helps document compliance.

These deadlines arise under different statutory and regulatory provisions. Completing one report does not eliminate the obligation to submit another when its requirements apply.

Labor Code § 5401 requires employers to provide the claim form and notice of potential eligibility when the statutory injury threshold is met. The one-working-day period begins when the employer receives notice or knowledge of the qualifying injury.

After receiving the completed form, the employer must provide a dated copy to the employee and forward it to the insurer or claims administrator. DWC guidance calls for these steps within one working day of receipt.

Form DLSR 5020 serves a different function. Under Labor Code § 6409.1, employers must report qualifying injuries within five days after obtaining knowledge, even when the injury is only alleged to be work-related.

Insured employers report to their insurer, while self-insured employers follow the applicable direct-reporting requirements. If an employee subsequently dies from a previously reported injury, an amended report is required within five days after the employer learns of the death.

Title 8, California Code of Regulations, § 342 requires immediate reporting of specified serious workplace injuries, illnesses, and fatalities.

A serious injury can include an amputation, loss of an eye, qualifying inpatient hospitalization, or serious permanent disfigurement. Certain public-road accidents fall outside the reporting definition unless they occur in a construction zone.

The eight-hour period generally runs from when the employer knew or should have known of the incident. A limited extension of up to 24 hours may apply when exigent circumstances exist.

Reporting an incident to the insurer does not satisfy this separate obligation. Employers addressing related workplace safety and health requirements should also consider applicable investigation and recordkeeping duties.

Labor Code § 5402(c) requires authorization of appropriate medical treatment within one working day after the employee files a claim form.

While liability remains under review, the statutory obligation covers treatment consistent with applicable guidelines, subject to a $10,000 limit before acceptance or rejection. That amount is not a general ceiling on medical benefits for an accepted claim.

Under § 5402(b), a claim generally becomes presumptively compensable if liability is not rejected within 90 days after filing. Certain statutorily specified injuries or illnesses have a shorter 75-day period.

Providing initial treatment does not itself establish employer liability. Broader workers' compensation claims may involve separate questions concerning eligibility, medical evidence, and benefits.

Employers should retain records showing when an injury was reported, when each required form was provided, and when the claims administrator received the documentation.

Relevant materials may include:

• Employee injury notices and completed claim forms.
• Form DLSR 5020 and transmission confirmations.
• Witness statements and incident records.
• Communications with insurers and medical providers.

Where a medical provider network applies, employers should also confirm that required network information was provided and an initial medical evaluation was arranged.

Accurate records help distinguish delays in employer reporting from later decisions made by insurers or claims administrators.

Labor Code § 3700.5 makes knowing or reasonably foreseeable failure to secure required workers' compensation coverage a misdemeanor.

For a first conviction, potential penalties include imprisonment for up to one year, a fine calculated under the statutory premium-based formula with a $10,000 minimum, or both.

Purchasing insurance after discovering a lapse does not retroactively establish coverage for the uninsured period. Employers should examine applicable policy dates, employment records, and the circumstances of any reported injury.

The Workers' Compensation Appeals Board (WCAB) adjudicates disputes arising under the compensation system. An insurer's initial claim denial is not equivalent to a final decision by a workers' compensation judge.

Under Labor Code § 5903, an aggrieved party generally has 20 days after service of a final order, decision, or award to petition for reconsideration. Applicable service rules may extend the calculation, depending on the method and location of service.

Employers should distinguish these adjudication deadlines from the initial reporting process. Additional information about workers' compensation appeals can help clarify the differences between claim denials and reviewable decisions.

A practical review begins with coverage verification and follows the documented sequence of events. Employers should confirm that the correct people received each report and that any applicable deadline was met.

Where records reveal missing notices, delayed reports, or disputed coverage, employers should identify the relevant statutory obligation before deciding how to respond. Addressing the actual compliance issue is more useful than treating every workplace injury as the same administrative problem.