The revised Reproductive Health Bill sets a woman's consent as the only requirement for a termination up to 16 weeks, and requires two doctors to say a termination is justified on medical, psychological or socio- economic grounds after that.

Health Minister Michelle O'Byrne tabled the private members' bill in Parliament yesterday and it could be debated as soon as Tuesday.

Pro-choice groups criticised Ms O'Byrne's self-confessed "political pragmatism" in reducing the gestation period down from the original 24 weeks, and said it could prompt women to make rushed decisions.

Ms O'Byrne said 94 per cent of terminations occurred before 14 weeks, and that most occurring after that point were medically necessary and could still be provided under the legislation.

Bass Liberal MHA Michael Ferguson said he did not support the legislation.

"It amounts to abortion on demand at any age, any stage," Mr Ferguson said.

All parties will have a conscience vote on the legislation.

It is understood that Liberal Party members may not support the proposed legislation even in a conscience vote, because of concerns about the inclusion of socio- economic factors in the justification for post- 16-week abortions.

Greens leader Nick McKim said he supported most of the legislation but opposed the access zones, saying there ought to be a way to protect women from vilification without the "draconian establishment of a protest and free-speech free zone".

Pro-life group Family Voice said the legislation was "nothing short of tyrannical".