The authorities are stepping up measures to help migrant workers returning to Henan province amid the global economic slowdown, a top official has said.

"At present, more than 3 million of the 21 million migrant population are still at home waiting for jobs in cities, an issue which is at the top of the government's agenda," Xu Guangchun, Party secretary of the province, told Sina.com on Monday.

Henan, one of the country's largest exporters of migrant labor, has witnessed the return of millions of jobless people due to the global economic downturn.