U.S. private-sector added more jobs than expected in September, indicating the labor market may be picking up in the following months, a leading industry report said on Wednesday.

The U.S. private-sector increased 162,000 jobs in September on a seasonally adjusted basis, down from a revised figure of 189,000 in a month earlier, but better than economists' average estimate of 140,000, according to the National Employment Report released by Automatic Data Processing (ADP).

The small businesses and medium businesses accounted for the majority of the employment gains last month, adding 145,000 jobs in total, while large businesses only increased 17,000 jobs.

The employment in the service-providing sector rose by 144,000, while jobs in the goods-producing sector increased 18,000, according to the report.

Specifically, construction employment rose for the fourth consecutive month, adding 10,000 jobs. The financial services sector added 7,000 jobs, extending this sector's consecutive advances to 14 months.

To boost the anemic economic growth and labor market, the U.S. Federal Reserve announced a new round of bond buying program and other stimulative measures last month, but many economists believed that those moves might fail to deliver the target of bolstering the nation's weak economic recovery.

The ADP survey is based on data from private businesses with more than 21 million workers on payrolls, excluding government job growth. The Labor Department will release the September job report on Friday, which may depict a more definite picture of employment.