ATHENS – Greece's second-biggest bank, Piraeus
"The continuing tough economic conditions ... call for the bank to adjust its operations to the situation," the bank said in a document seen by Reuters.
The document also said the voluntary redundancy scheme would be open until September 2.
Piraeus, which employs about 18,000 people, declined to comment.
Greece's top four banks - Piraeus, Alpha
After plugging a 7.3 billion euro capital hole last month, Piraeus has a core Tier 1 capital adequacy ratio of 14.5 percent, the highest among the country's four banks.
Last year, Piraeus bought smaller lender Geniki
Earlier this year, Piraeus also acquired the Greek branches of Cypriot lenders Bank of Cyprus , Cyprus Popular and Hellenic Bank to shield the country from the island's crisis.
Last month, it concluded the acquisition of the Greek assets of Portugal's Millenium BCP as well.
(Reporting by Angeliki Koutantou; Editing by Deepa Babington and Mark Potter)