Key legal question
Whether the insured's invalidity degree should be set at 53% rather than 27%
Extracted holding
The valid income of CHF 70,479 and invalid income of CHF 51,740 yield an invalidity degree of 27%.
Extracted reasoning
Overtime income was not proven with sufficient probability for the pension start in 2006, and the employer's wage stagnation justified indexing the 2001 wage only by the Nominallohnentwicklung.