July 22nd, 2025
by IEA Staff Writer
California’s workers’ compensation system has never been simple—but recent court decisions show that even familiar terrain can shift dramatically. The cases of DPR Construction v. WCAB (McClanahan) and Zenith Insurance Co. v. WCAB (Hernandez) offer two stark reminders that seemingly minor oversights or assumptions can turn into costly miscalculations.
Case Study 1: Discovery Deadline Dangers (DPR Construction)
Imagine this: a defense team prepares a rock-solid piece of evidence for trial—but forgets to disclose it before the Mandatory Settlement Conference (MSC). In DPR Construction, the 3rd District Court ruled that late evidence is inadmissible, even if the WCAB previously allowed such latitude. No excuses. No harmless error claims.
This isn’t just a legal technicality. It’s a wake-up call to the entire industry. Discovery obligations under LC §5502(d)(3) are now strictly enforced, and procedural lapses can result in an otherwise strong case collapsing before it reaches the merits.
For claims professionals, this decision places enormous importance on case readiness. CPWC Module 24 (Claim Resolution, Subrogation, and Contribution) drills into the necessary steps for preparing an MSC—including timely disclosure of evidence, documentation protocols, and best practices to ensure compliance with legal standards. Understanding these protocols isn’t just about staying organized—it’s now a matter of case viability.
Case Study 2: Commuting Assumptions Collapse (Zenith Insurance)
Commuting Assumptions Collapse (Zenith Insurance) Consider an employee injured while commuting. It might seem intuitive that if the commute benefits the employer, the injury should be compensable. But Zenith Insurance says: not so fast.
The appellate court strictly confined the “special risk” and “dual purpose” exceptions to the going-and-coming rule. A mere benefit to the employer, such as the employee needing to arrive on time, or an employee’s lack of a driver’s license, doesn’t automatically qualify the trip as work-related. Instead, the court emphasized that there must be direct employer control or an explicit job-related mission.
This decision reaffirms that compensability isn’t determined by common-sense notions of fairness or convenience—it hinges on precise factual elements. For instance, unless an employer specifically directed the trip or gained a measurable benefit beyond the employee simply showing up, it is unlikely to qualify under these exceptions.
To navigate this nuance, claims handlers must know more than the basics. CPWC Module 6 (Conditions of Compensability) and WCLP Level II (Advanced Compensability and Defenses) provide essential tools for analyzing AOE/COE issues, understanding legal thresholds, and structuring case files to withstand judicial scrutiny. With these resources, claims professionals can identify potential pitfalls early, flag exceptions, and document rationales that support their decisions.
Why This Matters
Both rulings underscore a harsh truth: workers’ compensation decisions now hinge on procedural precision and factual specificity. An overlooked deadline or a false assumption about compensability can derail a case—sometimes irreversibly.
IEA’s CPWC and WCLP training programs offer a clear path forward. They help claims professionals stay current with case law, develop consistent legal reasoning, and execute case strategy with the rigor courts now demand. As the legal landscape continues to evolve, staying educated isn’t a luxury—it’s a professional necessity.
When the rules tighten, your training is your advantage. Let CPWC and WCLP be your frontline defense against preventable claim breakdowns.
Additional Resources
- 3rd DCA Clarifies Credibility Standards and Discovery Rules: https://ieatraining.org/dpr-construction-v-wcab-discovery-rules-credibility-findings
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3rd District Court of Appeal Narrows Special Risk and Dual Purpose Exceptions: https://ieatraining.org/3rd-district-court-narrows-special-risk-dual-purpose
- Claims Practitioner in Workers’ Compensation Certification: https://ieatraining.org/certifications/workers-comp/claims-adjuster/
- Workers’ Compensation for Legal Professionals: https://ieatraining.org/certifications/workers-comp/legal-professionals/
- Sullivan on Comp: https://www.sullivanoncomp.com/
