Key legal question
Whether the cantonal court lawfully set the invalid income at CHF 20,000 and granted a three-quarter pension.
Extracted holding
No. The cantonal court relied on unverified statements and violated the duty to investigate the facts; the income basis for disability assessment was incomplete.
Extracted reasoning
The administrative file showed higher actual earnings in 2005-2006 and in the individual account extract. Further inquiries were necessary before determining the invalidity degree and pension entitlement.