Union’s work ban set to apply from 10pm on Thursday and up to 6am on Sunday but fewer services are expected across the entire four daysFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastTrains are set to shut down in Sydney over four days after the New South Wales government rejected rail union demands to run 24-hour train services, with fears it will throw the state’s transport system into chaos.The state’s Rail, Tram and Bus Union had threatened to stop work completely unless the government ran additional services overnight from