Dr Mike Rungie, Sue Chase and Jodi Glass will bolster the board’s numbers from the existing 12 members, which include Crows CEO and investment attraction supremo Rob Chapman, Primary Producers SA chairman and former Premier Rob Kerin and Don Russell, one time US ambassador and current head of the State Development Department.

Premier Jay Weatherill, who in 2014 announced a revamped board “to address challenges facing the state’s economy”, said the incoming trio would bring “decades of experience across key areas”.

“Our state has faced stiff headwinds over the past few years, but our economy is heading in the right direction,” he said.

“The Economic Development Board has been a valuable source of guidance for the Government for more than a decade… there’s still more work ahead of us and I’m confident the board will continue to assist the Government as we strive to modernise our economy.”

Board members are paid $45,000 a year.

Rungie worked for not-for-profit aged care provider ACH Group for almost three decades, most recently as CEO. He resigned this year, saying he would “model his promotions of life transitions by taking a gap year”.

Chase is executive chair and managing director of Cowell Electric Supply, an Eyre Peninsula-based powerline construction and electrical contracting company.

Glass is co-founder and executive producer at Adelaide’s Slingsby theatre company and a former CEO of the Adelaide Fringe.

The EDB was set up by Mike Rann in 2002, with Robert Champion de Crespigny as chair. It has since been overseen by Bruce Carter and its current chair Raymond Spencer.

Opposition Leader Steven Marshall last year pledged that a future Liberal Government would abolish the board and replace it with his long-promised state-based Productivity Commission.

“Either they’re not providing advice or the Government’s not listening to the advice,” he said at the time.

“Either way we find ourselves in a state where our economy is a real problem.”