Justice Nelson sits on the Supreme Court of Samoa, is an ad-hoc Justice of the Samoa Court of Appeal, and a Judge of the Land & Titles Court (Appellate Division). He is also a member of the Committee on the Rights of the Child, the body of 18 independent experts which monitors implementation of the Convention on the Rights of the Child by its State parties. Patron of the Pacific Island Lawyers Human Rights Network and a mentor for the Samoa Victim Support Group, Judge Justice has been a longstanding advocate for children's rights and the protection of young victims of sexual violence.