The owners of Hobby Lobby are OK with some kinds of birth control, according to Kate Pickert at TIME Magazine:
Women who work for Hobby Lobby had, and still have, full insurance coverage for most types of birth controlUPDATE: I didn't know the Gang of Five was this frigging ignorant:
Although the Supreme Court ruling opens the door for closely held companies to make other future objections based on religious beliefs, Hobby Lobby’s individual position is less extreme than many believe. The company objects to paying for morning-after pills and inter-uterine devices, but freely provides insurance that covers tubal ligation, birth control pills, condoms, diaphragms and contraception delivered via a patch or ring inserted into the cervix. More than 80% of all contraception users in the U.S. rely on these methods.
The majority decision, written by Justice Samuel Alito, held that if Hobby Lobby's owners believe that the contraceptives at issue cause abortions, the mandate is a burden on their religious beliefs: "[W]e must decide whether the challenged…regulations substantially burden the exercise of religion, and we hold that they do," Alito wrote. "The owners of the businesses have religious objections to abortion, and according to their religious beliefs the four contraceptive methods at issue are abortifacients."
Alito and the four other conservative justices on the court were essentially overruling not just an Obamacare regulation, but science. According to the Food and Drug Administration, all four of the contraceptive methods Hobby Lobby objects to—Plan B, Ella, and two intrauterine devices—do not prevent the implantation of a fertilized egg into the uterus, which the owners of Hobby Lobby consider abortion. Instead, these methods prevent fertilization.