Western Australia's business sector hopes a new Labor government will consider a broader privatisation agenda for state assets, as the state's debt levels mount.

WA Chamber of Commerce and Industry (CCI) chief executive Deidre Willmott said the CCI hoped the new government would take a fresh look at privatisation, despite a pledge by the party not to sell off the state's main electricity utility.

"We still believe some restructure of ownership of government assets will need to be part of the future, and we look forward to working with this government on what those plans might look like," she said.

"We certainly won't see an immediate sale of 51 per cent of Western Power as had been proposed, but we still believe a Commission of Inquiry and a new treasurer at the helm in this government will need to take a fresh look."

Labor is facing a budget blowout of $3 billion this financial year, and $1.5 billion in 2017-18, while state debt is projected to climb to $41.1 billion by mid-2020.

Ms Willmott indicated the CCI was relieved Labor's win would signal the end of the Nationals' $5 per tonne mining tax proposal, which it had strongly opposed.

The WA Liberals' promise to increase the payroll tax threshold will not eventuate either, however Ms Willmott said she would continue to campaign on the issue.

Ms Willmott welcomed Labor's pledge not to introduce new taxes or increase existing ones.

"That will be very important for businesses, as they seek to grow the economy and grow employment," she said.

Labor victory should sound warning to Canberra: Unions

However unions have warned the anti-privatisation agenda was a key part of Labor's victory on the weekend.

The Electrical Trades Union (ETU) credited its campaign with the Australian Services Union against the sale of state electricity utility Western Power as a key driver in Labor's success.

National secretary Allen Hicks said West Australians had sent a warning to other states which were privatising public assets.

"They've used the power of their vote to send an overwhelming message that they want the state's electricity network to remain in public hands," he said.

Construction, Forestry, Mining and Energy Union (CFMEU) state secretary Mick Buchan said Labor's victory was a warning for the Federal Government.

"Their treatment of WA and their persistent war of attacking wages and living standards of young people and working families have been flatly rejected," he said.

"This massive wave of support for WA Labor will cross the Nullarbor and hit Canberra like a tsunami."

Community groups plead for support

Western Australian Council of Social Services (WACOSS) chief executive Louise Giolitto said she was under no illusion the new government faced significant economic challenges, but believed the situation for vulnerable West Australians could be improved.

"It isn't always about additional money for the sector, sometimes it's about doing things better and ensuring we have an integrated government services approach," she said.

"Let's start breaking down those silos.

"If they work with the community service sector and key stakeholders and universities, I'm sure we can create better communities and especially for those who are most vulnerable."

Ms Giolitto said the McGowan government's first priority should be to address the National Affordable Housing Agreement, as funding for 104 homeless services was in doubt beyond June.