Yes I work for a company that pays 3 months full paid maternity leave
they request that you leave 6 weeks prior to the baby EDD
but if you wish to work closer you need to provide med certs to state you are fit to do so

I started the job in Feb this year and I wont be entitled to PAID maternity leave unless I work up to the date I started in 08 which was 11th of Feb. I will have about 3 weeks to go before the EDD, (thats if the bub doesnt make a surprise early entrance to the world!) Then I wont get any paid leave.