The reversal of the burden of proof under § 1298 ABGB is the most important procedural lever from the perspective of the parents of the injured child. Once the injured child's representative has shown the ski school's objective breach of duty, the burden reverses: the ski school must now prove that it and its instructor applied the requisite care. This proof is difficult to furnish where the circumstances of the accident suggest an overstraining situation, an oversized group or an unsuitable slope choice.
The child's own contributory fault under § 1304 ABGB is, pursuant to the basic rule of § 153 ABGB, in principle excluded for children under 14 (unmündig, lacking legal capacity for delict). An exception is the equitable liability under § 1310 ABGB, which applies if the child is economically capable of bearing the damage and it would be inequitable to leave the injuring party solely liable. In practice, § 1310 ABGB is rarely relevant in children's ski course cases; the operative question is whether an older child near the age threshold had actual discernment at the relevant moment.
Contributory fault of the parents under § 1304 ABGB is possible if the parents enrolled the child in a group that was manifestly unsuitable for the child's ability, if the equipment was manifestly inadequate (no helmet, incorrect binding setting) or if the parents gave the instructor an inaccurate ability declaration. This objection is routinely raised by the ski school's insurer and must be carefully documented and rebutted.