 In 2015, the Washington D.C. passed the Protecting Pregnant Workers Fairness Act of 2014 which is effective March 3, 2015.In 2018 Massachusetts did the same, with the Pregnant Workers Fairness Act going into effect on April 1, 2018.The Pregnancy Discrimination Act of 1978 and Family and Medical Leave Act are rooted in several major court decisions leading up to them.