U.S. private employers added 208,000 jobs in November, below economists' expectations, a report by a payrolls processor showed on Wednesday.

Economists surveyed by Reuters had forecast the ADP National Employment Report would show a gain of 221,000 jobs.

October's private payrolls were revised up to 233,000 from the previously reported 230,000.

Private employers have now added jobs for 57 straight months at an average rate of about 186,000 per month.

The report is jointly developed with Moody's Analytics.

The ADP figures come ahead of the U.S. Labor Department's more comprehensive nonfarm payrolls report on Friday, which includes both public and private sector employment.

Economists polled by Reuters are looking for total U.S. employment to have grown by 230,000 jobs in November, up from 214,000 in October, with private-sector hiring seen at 218,000 compared with 209,000 the month before.

The unemployment rate is seen holding steady at 5.8 percent, its lowest since July 2008.