Private sector in the U.S. added 201,000 jobs in May, according the ADP report on Wednesday.

April's figure was revised down to 165,000 jobs from a previous reading of 169,000 jobs.

Analysts expected the private sector to add 200,000 jobs.

The increase was driven by a job creation in the services sector.

"If we just maintain this rate of growth, by almost every estimate we will be back to full employment by this time next year" the Chief Economist of Moody's Analytics Mark Zandi said.

Official labour market data will be released on Friday. Analysts expect that U.S. unemployment rate is expected to remain unchanged at 5.4% in May. The U.S. economy is expected to add 227,000 jobs in May, after adding 223,000 jobs in April.