If you're pregnant and working in paid employment, you need to discuss work and leave arrangements with your employer. It is against the law for your employer to treat you badly because you are pregnant or have parental responsibilities.Pregnancy discrimination occurs when an employer treats a pregnant worker differently from others because of their pregnancy status. Pregnancy or breastfeeding discrimination is when someone treats you unfairly, including bullying you, because of your pregnancy or need to breastfeed. The advocates behind the Pregnancy Discrimination Act (PDA) of. 1978 had one very specific mission: to override the Supreme Court's.