Barker was born in the town of Greymouth, on New Zealand's West Coast. He attended Greymouth High School and then the University of Otago. After working as a shop assistant, bartender, storeworker, farmhand, driver, factory worker, and quarrier, he became involved in the trade unions, primarily those relating to the service sector. He eventually became National Secretary of the Service Workers' Union.[2]
Barker became a member of the Labour Party in 1973, served for a time as the Industrial Representative on the party's National Council and was also junior vice-president of the party. In the lead up to the 1993 election Barker sought the Labour nomination for the normally safe Labour seat of Heretaunga, but lost out to political advisor Heather Simpson.[3] Later in 1993 he won the Labour nomination for the Hastings electorate, defeating Auckland Tamoana Freezing Workers' Union president Pat Weir. His selection was a surprise as Weir won the floor vote of local members, but the selection panel chose Barker. The Freezing Workers' Union laid a complaint with the Labour Party's head office alleging the panel had been stacked, an assertion rejected by party secretary Tony Timms.[4]
At the 1993 election, he succeeded in winning the Hastings electorate, winning a seat that was previously held by the National Party. Soon after entering parliament he supported Helen Clark in her successful leadership challenge to Mike Moore.[5] He was re-elected in 1996, 1999, and 2002 for the reconfigured seat of Tukituki. In 2005 he lost the seat in what was a large swing against the sitting Labour government in the provincial areas and returned to Parliament as a list MP. In 2008 Barker tried unsuccessfully to regain the seat of Tukituki and for the second time was returned to parliament as a Labour list MP. He stood in one of the safest National seats, Taranaki-King Country, in 2011 and was not high enough on the Labour list to remain an MP.[6]
In 2005, Barker was re-appointed to Cabinet[7] as the Minister of Internal Affairs, Minister for Courts, Minister of Civil Defence and Minister of Veterans' Affairs. Barker lost his ministerial warrants following Labour's defeat in the 2008 election; however, Barker was appointed by the House of Representatives to the role of Assistant Speaker for the 49th New Zealand Parliament for the session 2008–11.
As a cabinet minister, Barker was entitled to the title of The Honourable and became The Hon. Rick (Richard) Barker[8] which is a title he was granted for the rest of his life[9] after his term of office.
Post-parliamentary roles
Barker was elected to the Hawke's Bay Regional Council in 2013, representing the Hastings constituency. In 2016 he was appointed deputy chair of the council. On 30 June 2021 he was elected chair, holding the role until October 2022.[10]