Westpac is poised to axe more than 400 jobs and send another 150 offshore in the latest round of job cuts at the big banks.
Westpac has briefed workers about the 410 job cuts and positions it will relocate to its operations in India as part of a group-wide restructure.
The Finance Sector Union says 150 positions will be moved to Bangalore, India, and it fears the bank could make even more job cuts this year.
The roles affected are mostly back office, non-executive support roles, but FSU national secretary Leon Carter says there will be a decline in the bank's overall standard of customer service.
Workers in India are usually paid between one-third and a half the wage of Australian workers in comparable jobs.