On Thursday 30 November 2006, just one week after resigning as leader of the National party, Brash resigned from parliament. No official date was set but he stated he would not be back for the new year. Brash then made his valedictory speech on Tuesday 12 December 2006 However, subsequent news media reports clarified that he would formally remain a Member of Parliament until officially tendering his resignation to the Speaker of the House of Representatives, Margaret Wilson. As such, he has no party responsibilities and will spend time answering emails and other correspondence until such time as the process of his resignation is completed, expected to be late February 2007.
This is from Wikipedia (because I was too lazy to find a news report on it) and what it doesn't mention is the fact that Don Brash has gone on a holiday to the USA paid for by NZ tax payers. He is just taking his time to hand in his resignation, it is not the actual process as the last part implies.

So, should a politician get paid for 3 months after resigning from government?