DOWNERS GROVE, Ill. (AP) — About 440 employees at Advocate Aurora Health have either left the health care company or have been fired for not complying with a vaccine mandate.

The hospital group said Thursday that the affected workers who represent less than 1% of Advocate Aurora’s workforce “were not in compliance and have parted ways with the organization.”

About half of the 440 employees were not full-time employees and were scheduled on an “as-needed basis.”

Advocate Aurora Health represents 26 hospitals and 500 care sites in Illinois and Wisconsin.