Premier Colin Barnett has announced replacements for Dean Nalder and Tony Simpson, whose resignations sparked Tuesday’s leadership furore.
Bill Marmion is the new Minister for Transport, while Paul Miles has been given the Local Government portfolio.
Mr Marmion has also been handed the State Development and Innovation portfolio, but lost the Finance role to Sean L’Estrange.
Mr Miles will remain the Secretary to Commerce Minister Michael Mischin.
Upper House MP Mark Lewis will become the Minister for Agriculture after industry put pressure on Mr Barnett to appoint a stand-alone minister to the portfolio.