Queensland Nationals MP George Christensen missed a substantial chunk of his parliamentary work on his heartland issue of developing northern Australia because he was visiting the Philippines.

Mr Christensen skipped nearly a third of the public hearings for the 2014 parliamentary inquiry into boosting economic and infrastructure development in the Top End while making some of his numerous visits to the south-east Asian nation.

George Christensen missed a substantial chunk of his parliamentary work on developing northern Australia because he was visiting the Philippines. Credit:Andrew Meares

He has reportedly been dubbed the "member for Manila" by colleagues, and was blasted by the opposition during campaigning on Wednesday for putting his overseas trips ahead of his electorate.

Mr Christensen, who has a Filipina fiancee, spent nearly 300 days over a four-year period in the Philippines. While they were private trips that he largely paid for himself, he billed taxpayers more than $3000 for connecting flights.