As the government's "Big Bang" financial deregulation moves into full gear, there is growing concern among lawyers that there has been one-sided emphasis on consumer responsibility for making investments at their own risk.

The December start of sales of investment trusts at counters of major banks nationwide underlines the need for retailers to provide full explanations of their financial products to customers, the lawyers say.

On Dec. 1, financial authorities eased regulation on the sale of investment trusts. Allowing banks and insurers to sell such products is a key step of the Big Bang deregulation, following the revision of the Foreign Exchange and Foreign Trade Control Law last April.