Wall Street's main indexes opened lower on Friday as solid job growth and a drop in unemployment rate last month pointed to a tight labor market, giving more room for the Federal Reserve to stick to big-sized interest-rate hikes.

The Dow Jones Industrial Average fell 241.7 points, or 0.81%, at the open to 29,685.27. The S&P 500 fell 37.8 points, or 1.01%, at the open to 3,706.74​, while the Nasdaq Composite dropped 196.0 points, or 1.77%, to 10,877.282 at the opening bell.