To some, a COVID-19 vaccine will be a welcome development that will permit employment to return to the pre-pandemic paradigm. Others, however, may legitimately believe that a vaccine threatens their health or spiritual well-being. A widely available vaccine that immunizes the population generally may well support individual opt-outs from vaccination, but these factors should be accounted for in designing and deploying a mandatory COVI- 19 workplace vaccination program.
https://www.natlawreview.com/article/vaccinate-or-terminate-mandatory-vaccination-workplace-policy