California Labor Code §5401 — DWC-1 Claim Form Requirement

(a) Within one working day of receiving notice or knowledge of injury under Section 5400 or 5402, which injury results in lost time beyond the employee's work shift at the time of injury or which results in medical treatment beyond first aid, the employer shall provide, personally or by first-class mail, a claim form and a notice of potential eligibility for benefits under this division to the injured employee, or in the case of death, to his or her dependents.

What does California Labor Code §5401 require?

Section 5401 requires the California employer to give every injured worker a DWC-1 claim form within one working day of learning of the injury, starting the formal claim process.

Section 5401 is California's rule requiring the employer to give every injured worker a DWC-1 claim form within one working day of learning of the injury. Once the worker returns the form, statutory deadlines kick in for benefit decisions, treatment authorization, and the 90-day presumption of compensability. Certified Specialist Eman Yazdchi (California Board of Legal Specialization, State Bar of California) enforces DWC-1 timelines on every file.

California Labor Code §5401 requires every California employer to provide the injured worker with a DWC-1 claim form within one working day of receiving notice or knowledge of a work injury under California Labor Code §5400, California's 30-day written-notice rule for injured workers, California or California Labor Code §5402, California's employer-knowledge / 90-day presumption rule, California. The §5401 California obligation runs regardless of whether the California employer disputes the claim, providing the form is not an admission of compensability. The DWC-1 form is the California gateway document that triggers the §5402 California 90-day investigation window and the §5402 California presumption of compensability if the California claim is not denied within that window. The §5401 California one-working-day deadline is strict.

How does §5401 California apply in practice for an injured California worker?

Workers should request the DWC-1 immediately after any work injury, complete and return it promptly, and keep copies of the form and every related receipt.

When an injured California worker contacts Yazdchi Law, led by Certified Specialist Eman Yazdchi (certified by the California Board of Legal Specialization, State Bar of California), one of the first California reviews is whether the California employer timely provided a DWC-1 form under §5401 California. If the California employer delayed or failed to provide the DWC-1, the California claim is not waived, the California Labor Code §5402 California 90-day clock is tolled until the DWC-1 is provided, and the California employer's §5401 California failure can support sanctions under California Labor Code §5814 California for unreasonable delay. The §5401 California DWC-1 timing is one of the most common California early-claim issues.

When should an injured California worker consult counsel about §5401 California?

Counsel enforces DWC-1 statutory timelines on every file to ensure the 90-day presumption attaches and the pre-acceptance treatment authorization protects the worker from out-of-pocket costs.

An injured California worker should consult counsel as soon as a California injury is reported, especially if the California employer fails to provide a DWC-1 form or appears to be discouraging the California worker from filing. The California §5401 / California Labor Code §5402 California / California Labor Code §5402(b) California framework is procedurally powerful but requires careful documentation of the California employer's notice and DWC-1 timeline. Yazdchi Law in Palmdale handles these California early-claim cases on contingency, with no fee unless the California claim succeeds.