There's such a lot of sensible thought on this thread (a few "world owes me a baby" dramatists aside), I think whoever the governement's got working on this should read it!
While I was ttc, the qualifying period for mat leave was 2 years and the leaver had to say when they intended to come back. (I was in a heavily unionised industry, thank god, and assume our rights were actually better than the legal requirement.) This did mean that women with less than 2 years' service, who got pregnant, did have to weight up the economics of continuing the pregnancy. Well, all pregnant women do, obviously, now or then. But there was a degree of protection there for both parent and employer.
This isn't a debate about the ethics of abortion, benefits in general and so on. As someone has pointed out, current mat benefits make it possible - not easy, but possible - for someone to get pregnant, get a job and leave it after few months, then rely on the state to fund her pregnancy and baby years. Morally and ethically, I like this fact except for the potential to basically rip off employers. There's also the issue of people not being forced to consider the economics of having a baby. Surely would-be parents should be giving those considerations high priority?
Women like me fought for abortion on demand so that having a baby COULD be a lifestyle choice. I can't help thinking that some posters to this thread want it both ways. Yes, you deserve to have a baby if you want one and couples should be supported in that. Deserving & support are not exactly the same thing as the world owing you a baby whenever you want one, though.
Realise I'm speaking to deaf ears.