Call centers and business process outsourcing providers are among industry sectors in India that are likely to cut more than 25% of their staffing

Call centers and business process outsourcing providers are among industry sectors in India that are likely to cut more than 25% of their staffing soon, according to a report by a trade body.

The Associated Chambers of Commerce and Industry of India (ASSOCHAM) said on Wednesday that companies in those sectors were faced with shrinking margins.

The prediction comes as the Diwali festival in India draws to a close. Companies postponed layoffs until the festival was over on humanitarian grounds, ASSOCHAM said.

Earlier this month, top Indian outsourcers like Infosys, Wipro and Tata Consultancy Services reported slower revenue and profit growth in the quarter to Sept. 30. These companies get most of their revenue from the U.S. and Europe, with a large number of their customers in the troubled banking and financial services sectors. (Listen to a podcast asking whether outsourcers can survive the down economy.)

India's economy is also slowing down. The country's central bank, the Reserve Bank of India, last week cut its estimate for the country's gross domestic product growth for the fiscal year ending next March 31 to a range of 7.5% to 8%, from an earlier forecast of 8%.

New hiring by India's IT and services outsourcing industry has slowed down, but companies are not yet considering large-scale cuts, according to analysts.