This document discusses whether employees should get flu shots and if employers can require them. It notes that flu costs billions in lost productivity each year. While flu season peaks in February, getting vaccinated any time provides protection. The CDC recommends all people over 6 months get vaccinated annually. Employers may want employees vaccinated to reduce flu impacts, but some states have made mandatory vaccinations illegal due to religious exemption concerns. Employers should check state laws on mandating flu shots.