U.S. businesses last month added the most jobs in a year, fueled by gains in manufacturing and construction, a private-sector survey showed Wednesday. Payroll processor ADP said companies and small businesses added 215,000 jobs in November. The firm also said private employers added 184,000 jobs in October, much stronger than its initial estimate of 130,000. The ADP figure suggests that hiring remained healthy in November after picking up in the prior three months. Manufacturing and construction firms each added 18,000 jobs. It was the biggest gain for manufacturers since early this year. The ADP figures cover private businesses only and often diverge from the broader report from the U.S. government. The Labor Department will report on November job growth Friday.