The union also demanded filing criminal cases against these defaulters.
AIBEA General Secretary C H Venkatachalam also said around 10 lakh employees and officials would go on a one-day strike, called by nine unions on July 29 to oppose what he calls the "anti-people banking reforms being pushed by the government."
"Wilful defaulters have taken loans for some purpose but have diverted and misused the money. There are around 7,000 big companies who are wilful defaulters and they owe Rs 70,000 crore to the system. We will reveal their names in a few days," Venkatachalam said here.
He called upon the government to declare wilful defaults as criminal offence and take criminal action and recover the money by confiscating their properties.
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"Because the money belongs to the public and not the government or the banks," he said.
Venkatachalam also called for setting up fast-track debt recovery tribunals to resolve the big loan defaults so that the money is recovered fast.
Opposing the entry of private players into banking system, he said encouraging such entities to open banks is a dangerous conspiracy to weaken public sector banks.