Yale New Haven (Conn.) Health said about 700 of its employees remain unvaccinated against COVID-19 and could eventually face termination if they fail to meet the system’s vaccination requirement, according to The Register Citizen.

The health system announced its vaccination mandate for employees June 30. The policy requires that employees be fully vaccinated or have a medical or religious exemption before Oct. 1. Those who do not comply will receive a verbal warning for noncompliance the week of Sept. 27, followed by a written warning if they are still not compliant the week of Oct. 4. Employees who are noncompliant the week of Oct. 11 will be suspended, and those who are not compliant as of Oct. 18 will be terminated.

As of Sept. 21, about 700 of the system’s roughly 30,000 employees were not yet vaccinated, according to Thomas Balcezak, MD, chief clinical officer of Yale New Haven Health.

Marna Borgstrom, the system’s CEO, said most people she is aware of are making the decision to resign at the end of September if they remain unvaccinated, but she expects that many people who are not yet vaccinated will be inoculated by the health system’s deadline, according to the Citizen.