An association of human rights groups and researchers presented a draft set of proposals Thursday aimed at addressing the problem of human trafficking, saying that a government plan to beef up punishment for the crime is not enough to combat the problem.

"I can't see a clear program to protect and support victims" in the government plan now being worked out, said Yoko Yoshida, a lawyer and director of the Japan Network Against Trafficking in Persons.

The group's draft, which was unveiled during a meeting attended by politicians and government officials, the group urged the government to offer at least 30 days' protection to all victims.