"the onus of proof establishing causation is on the complaining party" in German The onus of proof establishing causation is on the complaining party. Die Beweislast für diesen Kausalzusammenhang trifft die klagende Partei. Detailed translations for "the onus of proof establishing causation is on the complaining party" The onus of proof establishing causation is on the complaining party. The onus of proof establishing causation is on the complaining party. Die Beweislast für diesen Kausalzusammenhang trifft die klagende Partei.