The Czech miner made a record loss in the 2013 fourth quarter due to falling coal prices.
As a result, NWR has been working on a capital restructure since January.
The company’s main shareholder BXR says it is willing to invest new capital on the grounds there will be a satisfactory revised capital structure in place.
Mladek said the matter should be dealt with by private investors and although the government had an obligation to the workers, it was not looking to step in.
The issue has opened a can of worms within the Czech centre-left government as debates flare as to whether it should offer aid to keep open mines that are due to close this year.
The Paskov mine is under debate as a government bailout could secure jobs in a region already ravished by unemployment.
Finance Minister Andrej Babis, who previously opposed government aid, said he had come to a compromise with NWR that would keep the Paskov mine open until 2017.
Under the plan the government will spend around 600 million crowns on a social program to help the 2500 miners when they eventually become unemployed.
