Around 275 factories have been set up in the country's major Free Trade Zones located in Katunayake, Biyagama, Mirigama, Malwatta, Wathupitiwala and Koggala.
Another 86 factories have been set up outside the Katunayake FTZ.
He said that production has been severely disrupted as about 60% of the employees working in these companies are absent from work.