The US economy created many more jobs than expected in December.
Employers added 312,000 jobs, far ahead of predictions of 177,000.
The unemployment rate nudged higher to 3.9 per cent, but is still near historic lows.
Average hourly pay increased at an annual rate of 3.2 per cent - an improvement on the previous month's figure of 3.1 per cent.
The dollar shot higher after the numbers were released.
The main US share indexes, which had tumbled on Thursday, also opened higher.