The Newspoll, commissioned by Lifeline Australia, revealed that finances, health, and personal relationships were also the other contributors to stress.
However, the levels of stress this year were found to be slightly down from those previous year, with 87 per cent of the 1200 people surveyed indicating that they were stressed compared to 91 per cent a year ago.
Four out of ten people said that they experienced "unhealthy" stress levels, and nearly three-quarters of those stressed thought that work was the major contributor.
Money stressed out two-thirds, and one in five were "highly stressed" about it.
Interest rate drops and the Federal Government's cash handouts helped to lower financial worries.
Women were more likely to be stressed than men, the poll found, and so were the people who lived in big cities compared to their country counterparts, except when it came to relationships.
Single people were more likely to be stressed than couples, and the more people earned the more stressed they felt.
Lifeline Australia CEO Dawn O'Neil said that too many Australians were feeling the pinch.
"We know that small amounts of stress can sometimes help us but ... we are no longer just feeling a little bit of stress," News.com.au quoted her as saying.