The world’s top union leader says the Morrison government’s union-busting legislation has sent “shockwaves around the world”, calling on the Senate crossbench to block it to protect workers’ rights. Sharan Burrow, a former Australian Council of Trade Unions (ACTU) president who is general secretary of the International Trade Union Confederation, said the fact that “a democratic country like Australia could actually pass such a bill” sent the wrong message to developing nations.