Psychiatric Report Says 40% Work-Related: Which Legal Question Does That Answer?

A psychiatric report can say “40 percent work-related” and still leave you short of proving a California workers’ compensation injury. Another part of the same report may discuss a 35-to-40-percent threshold for personnel actions. Those numbers answer different legal questions. Read the heading, the doctor’s explanation and the applicable statutory provision before comparing them.

Start with three questions: Is the doctor describing what caused the psychiatric injury, the contribution of particular personnel actions, or the causes of permanent disability? A percentage without that context can make a report appear more favorable—or less favorable—than it is.

Identify the percentage’s purpose before checking the arithmetic

For an ordinary psychiatric-injury claim governed by Labor Code section 3208.3(b)(1), actual employment events must be predominant as to all causes combined. The Phan decision applied that requirement as more than 50 percent. Section 3208.3(b)(2) uses a different rule for specified violent-act cases: Actual employment events must be a substantial cause, defined in subdivision (b)(3) as at least 35 to 40 percent of causation from all sources combined. First identify which branch applies to the claimed injury.

Read the injury-causation question first. The personnel-action defense matters if industrial injury has been established and that defense is raised. Disability apportionment addresses the separate question of what caused lasting disability.

The statutory 35-to-40-percent definition is used for both the specified violent-act causation rule and the personnel-action defense. It does not replace the predominant-causation requirement in an ordinary section 3208.3(b)(1) claim. A disability-apportionment percentage answers another question.

Phan shows why an argument about management conduct may come too late in the sequence

In Phan, the AME attributed 40 percent of the worker’s clinical psychiatric conditions to employment and 60 percent to a nonindustrial condition. The Board found the report adequately explained. Because the work contribution fell below the predominant-causation threshold, it upheld the denial without requiring the employer to prove a good-faith personnel-action defense.

The worker’s argument that the employer’s actions went beyond protected personnel management did not cure the missing initial causation showing. The question was first whether competent medical evidence established the necessary industrial contribution. Our case analysis explains the reports, competing medical evidence and the Board’s reason for ending the analysis there.

The official PDF also contains an October 22, 2026 order correcting the October 16 decision’s omitted service date. That correction and the merits ruling are separate parts of the record.

Ask what evidence supports the work and nonwork shares

Look for the events the evaluator accepted, the history taken, medical records reviewed, testing or examination findings, and the reasoning connecting those materials to the percentage. Identify a concrete omission or inaccurate premise. A statement that work was stressful does not itself explain why the medical allocation is wrong.

For illustration, suppose a report in an ordinary claim governed by section 3208.3(b)(1) assigns 40 percent to work but its history omits a documented event within the claimed injury period. The useful question is whether that omission affects the medical causation opinion and how it may properly be addressed. Arguing only that 40 exceeds 35 does not answer that question. Preserve the event’s supporting record and identify where the report addresses—or fails to address—it.

The claimed period matters too. Separate an event occurring within that period from a later event and from later medical evidence about an earlier condition. Those are different possible objections. In Phan, the judge examined the asserted missing material against the period actually claimed and the history the evaluator had received.

Keep the doctor’s opinion separate from the judge’s legal findings

A doctor may assess how much particular events contributed, but the legal characterization of an event as a lawful, nondiscriminatory, good-faith personnel action belongs to the adjudicator. If an employer invokes that defense, identify the actions, disputed facts and legal findings rather than treating the doctor’s label as a completed defense.

Our personnel-action guide addresses that classification and proof in more detail. This guide addresses the earlier reading problem: Which causation question does the percentage actually answer? Keep that distinction when comparing reports, discussing a settlement or deciding what evidence counsel needs next.

Bring the complete report and the record behind the number

Bring all AME or QME reports and supplements, the records supplied to the evaluator, the claimed injury dates, the hearing findings and the documents supporting any alleged omission. Mark each percentage and identify its stated purpose. Keep injury causation and disability apportionment separate even if both appear in the same report.

The Mishra X workers’ compensation team can review those materials to identify the disputed medical premise, statutory branch and procedural next step. Contacting the firm does not preserve an objection or filing deadline.