Disappointing jobs numbers from both sides of the Atlantic weighed on equities overnight, a day after they reached a four-year high on Wall Street.
In afternoon trading in New York, the Dow Jones Industrial Average slipped 0.15 per cent and the Standard & Poor's 500 Index fell 0.29 per cent. The Nasdaq Composite Index rose 0.26 per cent.
Private companies in the US added 119,000 workers in April, according to ADP Employer Services data. That number was markedly short of expectations. The median forecast of economists surveyed by Bloomberg News called for a 170,000 advance.
All eyes-and hopes-are now on Friday's Labor Department report for signs of improvement in payrolls in April. Reuters said the ADP report has sparked rumours that the world's biggest economy may have added just 125,000 to 150,000 new jobs last month. The unemployment rate is expected to remain steady at 8.2 per cent.
"What the market needs is a sign that the economy is not getting worse. Yes, the growth is slow but it's still there," Ralph Edwards, director of derivatives sales and trading at ITG in New York, told Reuters.