THE Federal Opposition's new immigration spokeswoman has raised strong concerns about the Government's new seasonal worker program.

Sharman Stone, from regional Victoria, where many of the new visa-holders would work, said the program was confusing and lacked detail.

Regulations to allow 2500 Pacific Islanders into Australia as guest workers were introduced into Parliament on Tuesday.

The workers will be placed on regional farms, which have suffered from such a chronic lack of workers. More than $700 million in fresh produce was left to rot last year.

The pilot program, over three years, will be open to seasonal workers from Kiribati, Papua New Guinea, Tonga and Vanuatu.

Ms Stone said the fruit thinning season starts in about a fortnight but employers "don't know what their responsibilities will be - accommodation, transport, shopping facilities and so on".

She said she was concerned about health checks and care for workers, as well as to what security checks they would be subject.

A spokeswoman for Employment Minister Julia Gillard said consultations with the relevant countries were proceeding.