The veteran politician and MP for the Tanna constituency, was forced to resign from the position after the parliamentary speaker acted on legal advice the government received, that said Mr Natuman was barred from entering parliament.
In March, he was convicted and given a 2-year suspended sentence, after pleading guilty to a charge of conspiracy to pervert the course of justice.
Mr Natuman has been replaced as deputy Prime Minister by another MP from the Tanna constituency, Bob Loughman, in a move welcomed by the Opposition leader Alotoi Ishmael Kalsakau.
