Note that the comment you're responding to states:
The new hire took place in the first quarter of fiscal 2022, which equates to calendar Q3. (IPIX's fiscal calendar starts July 1 and ends June 30.) Therefore, the new hire took place July-September 2021. So when comparing quarter end March 31 '21 payroll taxes to quarter end March 31 '22 the increase is reflected.
The new hire is likely the mysterious Warren Weston who's been referenced numerous times.