Western Australia's economy is expected to slow by almost 40 per cent in 2008/09 and nearly 50 per cent the following financial year as the fallout from the global financial crisis impacts the state and demand for resources commodities wanes.

Western Australia's economy is expected to slow by almost 40 per cent in 2008/09 and nearly 50 per cent the following financial year as the fallout from the global financial crisis impacts the state and demand for resources commodities wanes.