FSU national secretary Paul Schroder says the site - called Bank Check - will provide the public with "the facts on offshoring" - which jobs are being sent offshore and what information is going with them.

The FSU claims that thousands of Australian finance sector jobs are under threat of being offshored to India, where workers are paid as little as $100 per week.

"We also know from research we conducted that the public hates the idea - 82% say they would consider changing banks if their bank sacked Australian workers and sent their information offshore," says Schroder.

The union is calling for legislation requiring banks to inform customers when their personal information is sent offshore.

"The government needs to force banks and other financial service providers, to disclose these details because customers have a right to know so they can make informed consumer decisions. In the meantime, we'll provide that right through this Web site," says Schroder.

As in the UK and US, banks in Australia have been facing growing criticism over offshoring initiatives, particularly following an undercover investigation by the Australian Broadcasting Corporation's (ABC) Four Corners programme last year that found that call centre workers in India were offering to sell personal financial records held in the databases of Australian companies.

Despite this a number of banks, including National Australia Bank, have continued to shift back office work offshore in order to cut costs.

However last month Westpac shelved plans to shift hundreds of back office jobs from Sydney to India following a sustained public backlash against the plans and pressure from the New South Wales government to keep the job in Australia.