By Min Zeng 

U.S. government bonds rose on Wednesday for the first time this week as a disappointing labor-market report boosted demand for haven assets.

Private payrolls in the U.S. added 212,000 jobs in February, according to the national employment report compiled by payroll processor Automatic Data Processing Inc. and forecasting firm Moody's Analytics. Economists polled by The Wall Street Journal had expected an increase of 215,000.

Comments from a top Federal Reserve official added to the bond market's strength.

Raising short-term official interest rates off currently near zero levels this year would be a mistake, Federal Reserve Bank of Chicago President Charles Evans said Wednesday. Mr. Evans. who votes this year on interest-rate policy, said inflation is unlikely to rise to the Fed's 2% target until 2018, supporting his case for patience.

Buyers stepped in after the selloff of the last two sessions that had sent bond yields close to the highest level this year. U.S. bonds offer superior yields in the developed world; investors continue to struggle to find bonds that offer a mix of safety and income at a time when many eurozone government bonds yields are below zero, driven by ultra-loose monetary policy in Europe and deflation concerns.

"People wanted to add bonds, but they were waiting for the event-risk of this employment data to pass," said Ian Lyngen, senior government bond strategist at CRT Capital Group LLC.

In recent trading, the yield on the benchmark 10-year Treasury note was 2.098%, compared with 2.122% Tuesday, according to Tradeweb.

Yields fall as bond prices rise.

Treasury bonds sold off in the past two days, hurt by a flurry of new corporate bond issuance. The U.S. government debt market sold off in February, a setback from a steep price rally since the start of 2014.

Concerns about the Fed potentially raising rates in June rattled the Treasury market last month. The 10-year note's yield increased by about 0.32 percentage point in February after falling nearly half of a percentage point in January.

Fed Chairwoman Janet Yellen said last week that the timing of any rate increase hinges on how the economy performs going forward.

Investors will zero in on Friday's nonfarm jobs report, the key U.S. data point before the Fed's next interest-rate policy meeting on March 17-18.

Economists polled by The Wall Street Journal expect 240,000 new jobs were added last month, after a 257,000 net increase in January. The unemployment rate is forecast to have fallen to 5.6% from 5.7% in January. Average hourly earnings, a main gauge of wage inflation, is expected to have posted a 0.2% gain after a rise of 0.5% in January.

Write to Min Zeng at min.zeng@wsj.com