It was the second-worst week for the market so far this year.
The Dow Jones industrial average lost 272 points, or 1.7 percent, to 16,102 Friday. It had been down as much as 348 earlier.
The Standard & Poor's 500 index gave up 29 points, or 1.5 percent, to 1,921. The Nasdaq composite slipped 49 points, or 1.1 percent, to 4,683.
The government reported that the unemployment rate fell to a seven-year low in August, but also that employers added fewer jobs than forecast.
Gap fell 2 percent after reporting a drop in sales.
Bond prices rose. The yield on the 10-year Treasury note fell to 2.13 percent.