Taff Vale Rly Co v Amalgamated Society of Rly Servants
（重定向自Taff Vale Case）
Taff Vale Railway Co v Amalgamated Society of Railway Servants [1901] UKHL 1, commonly known as the Taff Vale case, is a formative case in UK labour law. It held that, at common law, unions could be liable for loss of profits to employers that were caused by taking strike action.