Workers’ Compensation · Primary-source case analysis

Knight: Defective MPN Notice Can Shift Liability for Self-Procured Treatment

By Aneeta Mishra and Timothy Chan

Published May 18, 2026 · Updated October 18, 2026

Decision: Knight v. United Parcel Serv., No. AHM 127807 (WCAB Oct. 10, 2006) (en banc).

Bruce Knight v. United Parcel Service examined the consequences of directing care through a medical provider network without proving that the injured worker received the notices necessary to understand and use that system. The important question was not simply whether paperwork was missing: Did the failure prevent reasonable care? The Board found that connection in Knight’s actual attempts to obtain treatment and the insurer’s responses.

MPN medical control requires statutory notice compliance

The statutory system depends on timely notices explaining the network, treatment access, second and third opinions, and independent medical review.

The employer had to prove notice compliance

An assertion that notices normally were sent did not substitute for evidence establishing that the required information was provided in the worker’s case. Knight’s injury was admitted. An outside physician would not treat him without authorization; counsel repeatedly sought the MPN list; and the insurer’s letters said outside care would be Knight’s financial responsibility without adequately explaining how to obtain care in the network. This was a record of access failure, not merely a disagreement over the preferred doctor. Knight.

Missing notice affected medical control

Without the required information, the worker could not reasonably be expected to navigate the MPN’s selection and dispute procedures. A June 14, 2005 letter mentioned the network and transfer rules, but the Board explained why that was not enough: It did not identify whether care had been initiated in the MPN, the designated treating physician, how to change physicians or the second- and third-opinion rights. The distinction is between a document that mentions an MPN and notice that supplies the required usable information. Knight.

Reasonable outside care could become compensable

The Board relied on Labor Code section 4600(a): Neglect or refusal to provide reasonable treatment can make the employer liable for reasonable treatment expenses the employee incurs. It affirmed the award on that basis. It expressly did not decide the trial judge’s separate waiver and estoppel theories; readers should not recast the decision as a permanent forfeiture rule. Knight.

For a current claim, section 4616.3(b) makes the limitation explicit: Failure to give the required notice, or to post the specified notice, does not by itself permit outside-network treatment unless the failure resulted in denial of medical care. Preserve evidence of both the notice problem and what happened to treatment. The current notification requirements also differ from the 2005 rules quoted in the opinion; use current Rule 9767.12, rather than treating the opinion’s old regulatory quotation as today’s checklist.

A useful comparison for counsel is concrete: What care was sought, what network information or help was requested, what answer came back and how did that affect the appointment or treatment? Keep the response even if it is unfavorable to the argument. A missing piece of paper and an actual inability to obtain care are not interchangeable facts.

Key takeaways

• Preserve each MPN notice and proof of delivery.
• Keep the actual notice and provider-access instructions, not just an assertion that the standard mailing process was followed.
• Tie the claimed notice defect to a specific care request, response and treatment consequence; do not assume any notice defect authorizes leaving the network.
• Measure self-procured treatment against reasonableness and necessity.