Questão jurídica principal
Whether the cantonal court used the correct statistical working time for calculating valid income in the disability comparison.
Decisão extraída
Using the branch average of 41.7 weekly hours was not manifestly wrong and did not violate federal law; the appeal basis demanding 42 hours was rejected.
Fundamentação extraída
The more specific BUR figures did not make the cantonal court's reliance on the broader construction-industry average unlawful. The insured person's former small employer was not shown to work exclusively in high and civil engineering; it also operated in related construction areas. The actual workplace average was even 41 hours, so the chosen benchmark was defensible.