As of October 2015, human euthanasia is legal only in the Netherlands, Belgium, Colombia and Luxembourg. Assisted suicide is legal in Switzerland, Germany, Japan, Albania and in the US states of Washington, Oregon, Vermont, New Mexico, Montana and California (effective January 1, 2016).Human euthanasia was criminalized in Mexico, Thailand, and the Northern Territory of Australia.uthanasia is illegal in Australia. It once was legal in the Northern Territory, by the Rights of the Terminally Ill Act 1995. In 1997, the Australian Federal Government overrode the Northern Territory legislation through the introduction of the Euthanasia Laws Act 1997.