Job seekers attend the CUNY Big Apple Job and Internship Fair at the Jacob Javits Convention Center in New York.

The number of Americans filing applications for unemployment benefits fell to more than a 49-year low last week, but the drop likely overstates the health of the labor market as claims for several states including California were estimated.

Still, labor market conditions remain strong, which for now should help to temper fears of a sharp slowdown in economic growth. The economy is facing several headwinds, including a month-long partial shutdown of the federal government, which is starting to hurt both consumer and business confidence.

Initial claims for state unemployment benefits dropped 13,000 to a seasonally adjusted 199,000 for the week ended Jan. 19, the lowest level since mid-November in 1969 when 197,000 applications were recorded, the Labor Department said on Thursday. Data for the prior week was revised lower to show 1,000 fewer applications received than previously reported.

Economists polled by Reuters had forecast claims rising to 220,000 in the latest week. The Labor Department said claims for California, Kansas, North Dakota, Virginia, West Virginia, and Hawaii were estimated last week because of Monday's Martin Luther King Jr. holiday.

This suggests last week's surprise decline in claims probably exaggerates the labor market's health. The four-week moving average of initial claims, considered a better measure of labor market trends as it irons out week-to-week volatility, fell 5,500 to 215,000 last week.

U.S. Treasury yields held at session lows after the data. Major U.S. stock index futures had been trading higher earlier in the morning but fell after U.S. Commerce Secretary Wilbur Ross said the United States and China were "miles and miles" from resolving their trade dispute.

The dollar was stronger against a basket of currencies. The partial shutdown of the federal government so far appears to be having a limited impact on the claims data. The number of federal workers filing for jobless benefits rose 14,965 to 25,419 in the week ending Jan. 12. Claims by federal workers are reported separately and with a one-week lag.

About one-quarter of federal agencies have been shuttered since Dec. 22, impacting 800,000 government employees, with many working without pay and others furloughed. All workers will be paid retroactively when the shutdown ends.

But economists expect the longest shutdown in history will push the unemployment rate above 4.0 percent in January as the furloughed workers would be considered unemployed.

The jobless rate rose two-tenths of a percentage point to 3.9 percent in December as strong labor market conditions attracted some unemployed people back into the labor force.