Ganasi served in the Papua New Guinea Defence Force for 23 years prior to entering politics, rising to the rank of major and serving as an officer in the Bougainville Civil War.
Ganasi listed his last role prior to entering politics as having been a border administration officer at Daru.
[7] Ganasi appealed the result to the Supreme Court, which in September 2013 ruled in his favour and reinstated him after seven months out of office.
[8] He was frequently acting speaker from mid-2015 until his death due to Speaker Theo Zurenuoc serving as Acting Governor-General, during which time Ganasi was responsible for dealing with several attempted no-confidence motions in the O'Neill government.
[9][10][11][12] He died on 8 November 2016 at a Port Moresby hospital following a heart attack.