Gases that contribute to the greenhouse effect include: 1  Water vapor. 2  Carbon dioxide (CO 2). 3  Methane. 4  Nitrous oxide. 5  Chlorofluorocarbons (CFCs).
You can start maternity leave any time from 11 weeks before the beginning of the week your baby's due. You can bring the date forward if you need to take time off work for pregnancy-related reasons within four weeks of the expected birth date. Your employer may make you start your leave from then.
Unpaid mat leave can start 17 weeks early. EI also has sickness benefits which you can apply for which can give you up to 15 weeks of sick time (this time stacks on top of the Mat Leave and the Parental Leave which in essence could give you up to 65 weeks instead of the regular 52).he way I interpreted it, was that you can leave when you are about 25 weeks pregnant. I think you get something like 15 or 17 weeks pregnancy leave, and then 35 weeks maternity leave. If you save them up, though, you get almost a full year with baby.