Not all psychological injuries arise in the same way. In California’s workers’ compensation system, mental health conditions connected to employment are classified as either primary psychological injuries or secondary psychological injuries.
A primary psychological injury develops directly from an event or series of events at work. Examples include harassment, workplace bullying, a violent incident, or traumatic stress from witnessing harm on the job. To qualify, the psychological stress must be predominantly caused by actual events of employment, at least 51% work-related under California Labor Code §3208.3. These cases require the evaluator to assess the work environment, management actions, and the worker’s overall stress exposure to determine causation and potential impact on work ability.
By contrast, a secondary psychological injury develops as a consequence of a physical injury. For instance, a worker with chronic back pain, limited mobility, or disfigurement after an accident can develop depression, anxiety, or post-traumatic stress. Even though the root cause is physical, the psychological effects can significantly affect recovery, daily function, and employability. Evaluators must determine what portion of emotional distress is linked to the industrial injury, and what may stem from other personal or non-work-related factors, a process guided by apportionment principles.
This distinction is critical because it affects causation, compensability, and benefit eligibility. A QME or AME analyzes both primary and secondary injuries for causation within California’s legal framework and provides legal determinations based on a preponderance of evidence with reasonable medical probability.
Whether a psychological injury is primary or secondary, a QME or AME evaluation ensures that all contributing factors are identified and appropriately accounted for. By applying objective testing, reviewing medical and employment history, and using apportionment where relevant, the evaluator creates a balanced, data-supported report. This process helps the workers’ compensation system deliver appropriate care and just outcomes for injured employees according to the laws protecting the injured worker.