Whakakī i te rerenga e whai ake nei: I te United Kingdom, i whakakorehia nga patu arohaehae e te Trade Disputes and Trade Unions Act 1927 i muri i te pakanga o te United Kingdom.
te patu whānui. I whakakorehia e te Ture Tauhokohoko Tauhokohoko me te Ture Tauhokohoko 1946, i whakaaetia e te Kawanatanga Mahi i muri i te pakanga.