Key legal question
Whether the cantonal court arbitrarily assessed the husband's income and hypothetical earning capacity by relying on a part-time income as if it were full-time.
Extracted holding
Yes. The factual findings were incomplete: the CHF 2,040 monthly income stemmed from part-time work, yet it was used as the basis for a full-time hypothetical income.
Extracted reasoning
The Federal Court held that the wife sufficiently showed arbitrariness under Art. 9 Cst. Because the lower court accepted that full-time work could reasonably be required, the hypothetical income had to correspond to full-time employment. Using an unadjusted part-time salary as the benchmark was manifestly unsustainable and outcome-determinative.