Career
She was an Member of Parliament from 1987 to 1996, representing the Labour Party. She was first elected to Parliament in the 1987 elections as Member of Parliament for the Wellington electorate of Island Bay, and retained this seat until her departure from Parliament at the 1996 elections. Before entering politics, she worked as an official at the Department of Labour and as a trade union organiser.
In 2009, Tennet was appointed chief executive of industry development organisation Textiles New Zealand.