While you do not have to inform your employer that you are pregnant, have given birth in the last six months or are breastfeeding, it is important (for you and your child’s health and safety) to notify them in writing as early as possible. Until your employer receives written notification from you, they are not required to take any further action, such as altering working conditions or hours of work. Your employer can also ask you to provide a certificate from your GP or registered midwife showing that you are pregnant.