Arizona's largest employer requires COVID shots as concerns about 'Third Wave' grow Banner Health's mandates vaccinations for all 45,000 workers. State health director says climbing COVID cases is 'pandemic of unvaccinated' Author: Brahm Resnik Updated: 10:00 PM MST July 20, 2021 PHOENIX — People who work for Arizona's largest employer will have to get COVID-19 shots by November if they want to keep working there. Banner Health is dangling $10,000 prizes to persuade any of its 45,000 employees who are unvaccinated to roll up their sleeves. "We care for some of the most vulnerable people in our communities and we owe it to them to take every measure possible to ensure the safest care environment," Peter Fine, president and chief executive officer of Banner Health, said in a companywide email Tuesday.