China's leadership, obsessed with maintaining stability and making sure redundancies do not lead to unrest, will spend nearly 150 billion yuan ($23 billion) to cover layoffs in just the coal and steel sectors in the next 2-3 years.

The overall figure is likely to rise as closures spread to other industries and even more funding will be required to handle the debt left behind by "zombie" state firms.

The term refers to companies that have shut down some of their operations but keep staff on their rolls since local governments are worried about the social and economic impact of bankruptcies and unemployment.

Shutting down "zombie firms" has been identified as one of the government's priorities this year, with China's Premier Li Keqiang promising in December that they would soon "go under the knife"..

The government plans to lay off five million workers in industries suffering from a supply glut, one source with ties to the leadership said.