Workers’ Compensation · Primary-source case analysis

Leinon: The Section 4650 Penalty Clock Followed a Final Liability Determination

By Aneeta Mishra and Timothy Chan

Published May 17, 2026

Leinon v. Fishermen’s Grotto addressed when delayed-payment penalties attach after a genuine dispute over entitlement or the indemnity rate.

A genuine liability dispute changed the trigger

The automatic-increase analysis did not assume benefits were due before liability or the correct rate had been resolved.

Payment within 14 days avoided the penalty

The employer could pay within 14 days after a final order imposing liability or after accepting responsibility for the injury and benefits.

Finality depended on appellate rights

An order became final for this purpose after appellate rights were exhausted or allowed to lapse.

The chronology controlled the result

The Board tied the statutory consequence to the dates of dispute resolution, finality, acceptance, and actual payment.

Key takeaways

• Build the full dispute-and-payment timeline.
• Identify when liability and rate were actually resolved.
• Track petitions and appellate finality.
• Issue payment within the governing 14-day period.