Seyfarth Synopsis: As expected, on Friday, March 12, 2021, Governor Andrew Cuomo signed New York State’s COVID-19 Vaccine Paid Leave Bill into law. The law took immediate effect and will expire on December 31, 2022. On March 12, Governor Cuomo signed legislation granting public and private employees up to 4 hours of paid leave per COVID-19 vaccine injection. As reported in our prior alert, it is not clear whether the bill, which took effect immediately, will be retroactively effective for those employees who received a COVID-19 vaccine before March 12, 2021. It is also not clear whether, if COVID-19 vaccine paid leave does have retroactive effect, how employers should handle other paid time off that may have been used by an employee for their vaccine-related time off.