WASHINGTON, April 2 (Reuters) - U.S. private payrolls growth accelerated in March, the ADP National Employment Report showed on Wednesday.

Private payrolls increased by 155,000 jobs last month after an upwardly revised 84,000 rise in February. Economists polled by Reuters had forecast private employment advancing 115,000 following a previously reported 77,000 gain in February.

The ADP report, jointly developed with the Stanford Digital Economy Lab, was published ahead of Friday's more comprehensive and closely watched employment report for March from the Labor Department's Bureau of Labor Statistics. There is no correlation between the ADP and BLS employment report.

The labor market continues to steadily slow, though economists warn that President Donald Trump's blizzard of tariffs announcements since returning to the White House in January could significantly erode demand for labor.

Trump promised to announce global reciprocal tariffs on Wednesday, which he has dubbed "Liberation Day." He sees tariffs as a tool to raise revenue to offset his promised tax cuts and to revive a long-declining U.S. industrial base.

But businesses and households are not convinced. Business and consumer confidence have sagged, which could see a retrenchment in investment and consumer spending. Pressure is also seen coming from deep government spending cuts, which have so far resulted in thousands of federal workers being fired.

Economists now see higher odds of a recession over the next 12 months than they did in February.

Government data on Tuesday showed job openings declined and hiring was tepid in February. There were 1.07 job openings for every unemployed person, down from 1.13 in January.

Private payrolls likely increased by 127,000 jobs in March after rising 140,000 in February, a Reuters survey showed.

With more public sector job losses expected, nonfarm payrolls are estimated to have increased by 135,000 jobs after advancing 151,000 in February.

The unemployment rate is forecast unchanged at 4.1%.