Prime Minister Tony Abbott is leaving the door open for a frontbench reshuffle, a move Social Services Minister Scott Morrison indicated would not come as a surprise.

Today's second anniversary of the Abbott Government comes ahead of the Canning by-election and amid internal disquiet about the performance of Treasurer Joe Hockey.

"I never rule out reshuffles because it's not unusual to have a reshuffle, particularly as a year draws to a close," Mr Abbott told Channel Nine last night.

"But all of my ministers are doing a good job. I think the senior ministers are doing a particularly good job."

Mr Morrison has been one of the Government's best performers and has been mooted as possible future treasurer.

He says the Prime Minister has been hinting at making changes to his Cabinet.

"He's certainly indicated that over a number years now," Mr Morrison told Macquarie Radio.

"That's for him, he's the selector, he's not just the chairman of selectors, he is all of the selectors in one.

"They are his calls and the rest of us do our jobs as best as we possibly can in a bid to do the right thing for the Australian people, and if the selectors, the selector, looks kindly on that, well, that's a matter for him."

'Strong expectation' Hockey still treasurer in 12 months

Several members of the Government believe Mr Hockey has failed to properly sell the Coalition's economic message, and would like to see him sacked or moved into another portfolio.

Mr Abbott said he expected Mr Hockey would be treasurer for the Government's third anniversary.

"Yes, that's my very strong expectation," the Prime Minister told Channel Seven.

"Because Joe was responsible along with me and the Cabinet, for last year's budget which was a budget for saving, a difficult but necessary budget for saving.

"He was also responsible for this year's budget for confidence."

Mr Hockey played down reports Foreign Minister Julie Bishop spoke with Mr Abbott about dumping Mr Hockey as treasurer.

"That's just gossip. That's just gossip and I'm focused on doing the job that a treasurer should do, which is laying down the foundations for more growth in the Australian economy and greater opportunities for Australians to get ahead and get a job," he said.

Ms Bishop said Mr Hockey is doing a "good job".

"I've said repeatedly that Joe Hockey has one of the toughest jobs in Australia, he's dealing with the worst set of financial accounts of any incoming treasurer," she said.

"Labor trashed the budget, trashed the surplus, we are now dealing with record levels of debt and deficit and I think Joe's doing a good job."