What Is California Labor Code §4903.8: Lien Assignment Rules?

(a)(1) Any order or award for payment of a lien filed pursuant to subdivision (b) of Section 4903 shall be made for payment only to the person who was entitled to payment for the expenses as provided in subdivision (b) of Section 4903 at the time the expenses were incurred, who is the lien owner, and not to an assignee unless the person has ceased doing business in the capacity held at the time the expenses were incurred and has assigned all right, title, and interest in the remaining accounts receivable to the assignee.

What does California Labor Code §4903.8 do?

Section 4903.8 says a workers' comp expense lien can be paid only to the provider who is actually owed the money, not a stranger who buys the lien, except in narrow cases.

A doctor, clinic, or other medical provider that treats an injured worker and is not paid can file a lien against the workers' compensation case under Labor Code 4903(b). This rule controls what happens if that provider later tries to sell or hand off the lien, often to a collection company or a lien-buying business. The Workers' Compensation Appeals Board, or WCAB, can order payment only to the lien owner, the provider who was owed the money when the expense was incurred. An assignee can be paid only if the provider has stopped doing business in that role and has formally signed over every right to its remaining accounts.

This rule covers section 4903(b) liens for medical treatment expenses and medical-legal expenses, the costs a provider can bill for treating an injured worker or preparing medical-legal evidence for the claim. It does not change an attorney's fee lien filed under a different part of the same statute, which follows separate rules explained in our guide to Labor Code 4903 attorney fee and other liens.

Who gets paid when a lien is assigned under section 4903.8?

The lien owner gets paid first. A buyer or assignee is paid only if the provider closed that part of its business and signed over its remaining accounts.

For most liens, payment goes to the provider who billed for the care, called the lien owner. An assignee steps into that spot only when the provider has stopped operating in the capacity it held when the expenses were incurred and has handed over every right to its unpaid accounts. For a lien filed after January 1, 2017, this rule is strict: an assignment made any other way has no legal effect, and the appeals board can still refuse to pay the assignee.

What paperwork does a lien assignment need?

Whoever receives an assigned lien must file a true copy of the signed assignment and serve it on the other side within a set deadline.

The deadline depends on two dates: when the lien was filed, and when the assignment itself happened.

What proof must a lien show under section 4903.8?

A valid lien needs signed declarations proving the billed services were really provided and billed correctly.

Along with the lien, the filer must submit one or more declarations signed under penalty of perjury. The declarations must state that the services or products described in the bill were actually given to the injured worker, and that the billing statement truly and accurately describes them. A lien submitted without this proof can be treated as invalid, and it will not hold open the filing deadline for a corrected version.

Can someone be penalized for assigning the same bill more than once?

Yes. If a provider assigns the same bill to more than one buyer, the WCAB can call a hearing and sanction bad-faith conduct.

The law lets the appeals board set a hearing when the same receivable or bill has been assigned more than once. If the board finds that the multiple assignments were frivolous, harassing, or meant to cause needless delay or expense, it can award costs and attorney's fees against the assignor, the assignee, and their attorneys. A separate, broader rule, Labor Code 5813, lets a workers' compensation referee or the board add sanctions of up to $2,500 for bad-faith tactics in a case; read more on our Labor Code 5813 bad-faith sanctions page.

How does section 4903.8 fit with other California lien laws?

This rule is one piece of a larger set of lien laws; other sections cover who else can file a lien and how payment affects your disability checks.

Labor Code 4903 is the base rule that lists which costs can become a lien on a workers' compensation case, including the provider expense liens whose assignment this rule limits. A separate lien type belongs to the Employment Development Department under Labor Code 4904, which can claim a lien for unemployment compensation disability benefits it already paid you. Labor Code 4904.1 says that paying a Section 4904 lien does not delay the start of your own disability installment payments. If a lien on your case is heading to a hearing, our guide on what happens at a workers' comp lien conference explains what to expect.

A provider lien, or a dispute about who should be paid on one, can slow down a California workers' compensation case even when the underlying injury claim is not in question. If an assigned or disputed lien is complicating your case, Yazdchi Law P.C. reviews each matter individually. Call (661) 273-1780 or use the contact form to ask about a free consultation. For background on how liens work in a California claim generally, see our guide on workers' comp lien claims. The firm serves injured workers across California from its office in Palmdale.