Companies in the U.S. added fewer workers in June than forecast, according to data from a private report based on payrolls. The 13,000 gain was the smallest since February and followed a revised 57,000 increase the prior month, figures from ADP Employer Services show. Economists surveyed by Bloomberg News had forecast a gain of 60,000, according to the median estimate.

Companies may be slow to add workers until there's evidence the gains in demand will be sustained. Economists in a Bloomberg survey project a Labor Department report in two days will show payrolls fell this month due to a plunge in government employment of temporary workers conducting the census.

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