Sydney - Australian Prime Minister Tony Abbott on Monday denied a cabinet reshuffle was a sign his government was in crisis as he came under fire for saying his biggest achievement for women was axing a carbon tax.Abbott on Sunday unveiled sweeping changes to his ministry, dumping Defence Minister David Johnston, promoting Immigration Minister Scott Morrison and appointing only his second woman to cabinet.It came after recent opinion polls showed his personal approval rating and that of his conservative government had plunged over tough spending cuts and perceived broken promises since coming to power late last year.Abbott hit the airwaves Monday to sell the reshuffle as a "reset and refocus" for the new year, batting away suggestions that it was damage control."No," he told the Seven Network when asked if this was the case."This is a good way to end the year after a year of considerable achievement."Since assuming power in September 2013, the government has announced savings across the board to rein in a growing budget deficit.But critics have slammed some of the measures, which include slashing health and education spending while tightening welfare benefits, as broken pre-election promises and too harsh.Carbon taxThere has also been criticism of the government's ability to adequately explain why the cuts were needed."The vital challenge of government next year is more jobs, more prosperity for families, but the way to achieve that is to build a stronger economy and that means continuing our work to get the budget back under control," said Abbott.Among the cabinet changes, Morrison was moved to the social services ministry with Abbott making welfare reform one of his key priorities.Johnson was replaced by health minister Peter Dutton while Assistant Education Minister Sussan Ley assumed the health and sport portfolios, doubling the number of women in the ministry. Julie Bishop is Foreign Minister.Abbott doubles up as minister for women and when asked in another interview with Nine Network what his biggest achievement was for women in Australia was this year, he said it was repealing the carbon tax."As many of us know, women are particularly focused on the household budget and the repeal of the carbon tax means a $447 a year benefit for the average family," he said.In opposition, Abbott claimed repealing the carbon tax would help women because it would lower electricity costs associated with ironing.Labor frontbencher Anthony Albanese told Fairfax Media Abbott was stuck in a time warp."The problem isn't that Tony Abbott's stuck in the past, it's that he wants the rest of Australia to go back there and keep him company in a world where men do the big jobs and women do the ironing," he said.