Private sector in the U.S. added 189,000 jobs in March, according the ADP report on Wednesday. It was the slowest pace since January 2014.
February's figure was revised up to 214,000 jobs from a previous reading of 212,000 jobs.
Analysts expected the private sector to add 231,000 jobs.
The Chief Economist of Moody's Analytics, Mark Zandi said that falling oil prices and a stronger dollar weighed on the labour market. Moody's Analytics helps to comply the ADP report.
Official labour market data will be released on Friday. Analysts expect that U.S. unemployment rate is expected to remain unchanged at 5.5% in March. The U.S. economy is expected to add 251,000 jobs in March, after a 295,000 increase in February.