My partner has a job waiting for him in Oz. We are unsure totally on the law. My sons biological father has no parental rights, I was never married to him nor was he on the birth certificate after December 2003. He will not sign anything to give my son permission to leave the country. We have said he can come over every year and go on webcam etc. What can we do? Do we need permission? If not, how to we go about telling Australia immigration this?