The government website says we need to inform our employer at least 15 weeks before the baby is expected. Now my question is if it is 15 weeks from the due date based on LMP/Ultrasound? or if I am already given a date for c-section by the hospital I should consider that as my due date? In my case my actual due date based on the ultrasound/LMP is 10 days later than the date my c-section is (tentatively) booked.