Key legal question
How the insured person's valid income should be determined for disability assessment
Extracted holding
The cantonal court was right to base the valid income on statistical wage data because the prior earnings were not a reliable indicator of what the insured would have earned without disability.
Extracted reasoning
The low and irregular pre-disability earnings were already influenced by health-related limitations. The previous wage history therefore did not provide a dependable basis, and the use of LSE-based statistical wages was permissible and not manifestly incorrect.