Question juridique clé
Whether the cantonal court had to examine the insured person's claim of a lasting change in income bases and possible extraordinary contribution assessment.
Solution extraite
Yes. The court had to investigate whether the alleged invalidity and cessation of milk production caused at least a 25% income reduction and thus triggered the extraordinary assessment procedure.
Motifs extraits
Under the investigation principle, the court must examine timely allegations of a durable change in income bases even if no tax interim assessment exists; the insured's asserted facts were capable of affecting the contribution basis.