The stockmarket fell as investors shrugged off strong leads from Wall Street, focusing instead on a profit warning by QBE that saw the insurer's shares dive more than 22 per cent.
The benchmark S&P/ASX 200 Index fell 41.6 points, or 0.8 per cent, to 5144.4, while the broader All Ordinaries Index lost 37.6 points, or 0.7 per cent, to 5148.4.
The market actually opened higher after taking a strong lead from the US, where stocks rallied on Friday after the release of better than forecast jobs data, prompting speculation the Federal Reserve would start to taper its bond buying program sooner rather than later.
At the local close, the dollar was buying US91.04¢, up from US90.56¢ at Friday's close.
Financial services was the worst-performing sector, down 1.4 per cent as Australia's biggest insurer, QBE, plummeted on a profit downgrade and the big four banks extended their recent selloff.
QBE shares fell 22.3 per cent to $12 after emerging from a trading halt to warn it would suffer a $250 million reported net loss for the year. It was QBE's 10th consecutive profit downgrade.
Among QBE's competitors, Insurance Australia Group, owner of NRMA, dropped 1 per cent to $5.72, while AMP shed 2.3 per cent to $4.35.
An ANZ survey showed domestic job advertisements fell 0.8 per cent in November after recording close to no growth over the previous two months. November job ads were 10 per cent lower than a year ago.
Commonwealth Bank dipped 0.4 per cent to $74.90, while Westpac lost 1.3 per cent to $31.09. National Australia Bank fell 0.9 per cent to $33.17 and ANZ shed 0.8 per cent to $30.75.
Qantas Airways lost 3.4 per cent to 99.5¢, closing below $1 for the first time in 17 months, after it announced the closure of Jetstar's Darwin base. Corporate raiders are reportedly circling after Qantas lost its investment grade credit rating on Friday.
Telecoms was the best-performing sector, up 0.9 per cent as Telstra added 0.6 per cent to $5.01. TPG Telecom was the best-performing stock in the ASX 200, jumping 13.6 per cent to $4.68 after it acquired Telecom NZ's struggling subsidiary, AAPT, for $450 million.