Religious exemptions aside, the most likely court battle will involve disability discrimination cases brought by employees who were fired even after presenting the proper medical documentation excusing them from receiving the vaccine. Getting into the courthouse is only half the battle.
Despite concerns, vaccine requirements are still around because vaccines work. Smallpox killed over 500 million people before a vaccine was created. The smallpox vaccine was used in the United States until approximately 1972, and by 1980 smallpox had essentially been eradicated.
The recent push for vaccinating the public against Covid-19 has polarized the public. In many states — including California — the battle over vaccinations has moved into the workplace. On one hand, Employers are concerned about lawsuits and they want their employees vaccinated.