In a regulatory filing, Bank of Baroda said that the functioning of its branches/offices may be "affected/paralyzed" due to the proposed strike.

The state-run lender, however, assured that it is taking all necessary steps for smooth functioning in bank branches on the day of strike.

The two unions that have called for the bank strike are the All India Bank Employees Association (AlBEA) and the Bank Employees Federation of India (BEFI).

"Merger of banks will imply closure of large number of branches with consequent staff surplusage and staff redundancy which in turn would endanger our jobs and job security," BEFI said in a statement.

In a joint statement, the unions said that the strike call is to oppose bank mergers and banking reforms and high penal and service charges for customers. Other demands include recovery of bad loans, stringent action on defaulters charges and job security, according to the statement.

Last month, four unions of public sector bank officers - the All India Bank Officers' Confederation (AIBOC), the All India Bank Officers' Association (AIBOA), the Indian National Bank Officers' Congress (INBOC) and the National Organisation of Bank Officers (NOBO) - had called for a strike opposing the merger of banks. However, the strike was later deferred after Union Finance Secretary Rajiv Kumar assured the unions the government would look into their demands.

According to the mega consolidation plan announced in August, Punjab National Bank will be merged with United Bank of India and Oriental Bank of Commerce; Syndicate Bank with Canara Bank; Allahabad Bank with Indian Bank, and Andhra Bank with Corporation Bank and Union Bank of India.

The merger to combine 10 state-run banks into four follows the amalgamation of six of SBI's associate banks along with Bharatiya Mahila Bank with the country's largest lender in 2017, and the combination of Vijaya Bank, Dena Bank and Bank of Baroda the next year.

Meanwhile, the Finance Ministry has said that loans worth Rs. 81,781 crore were disbursed during the nine-day outreach programme organised by banks. The loan camps were aimed at meeting the demand of borrowers during the festival season.