Because data concerning production processes, materials used, and so on is all in the hands of the company, in the US and Japan there has been some adjustment of the principle that the plaintiff carries the burden of proof in civil cases. The defending firm or plant must come up with research and statistics of its own to prove its innocence.
有鑒於勞方工作流程、製程、原料成分等資料都掌握在資方手上，美、日職災案件都已將民事訴訟中由原告舉證的觀念，彈性改變，責成被告廠商必須主動提出研究與數據來證明自己的清白。