US STOCKS-Futures add to losses after ADP job report

(Updates with reaction to the ADP report)

NEW YORK, Sept 4 (Reuters) - U.S. stock index futures added losses on Thursday as a weaker-than-expected reading on U.S. private-sector employment by ADP Employer Services pointed to further deterioration in the U.S. labor market.

U.S. private employers cut 33,000 jobs in August, according to the ADP report. For details, see [ID:nWEN7776]

The news from the ADP report could make investors more cautious a day before the release of the government's August non-farm payrolls data.

S&P 500 futures SPc1 fell 6 points and were below fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures DJc1 fell 52 points and Nasdaq 100 NDc1 futures lost 10 points. (Reporting by Ellis Mnyandu; Editing by Kenneth Barry)