Hello,
When an employee reduces their weekly working hours, their Annual Leave balance in hours may appear to decrease. However, it's crucial to note that the entitlement is based on weeks of leave rather than hours, as per the Holidays Act. Therefore, if the number of weeks of leave remains unchanged before and after the adjustment, the employee has neither gained nor lost Annual Leave entitlement. You may notice, when the employee take's leave after decreasing their days worked per week, their Annual Leave rate will increase (Average weekly earnings).
For managing these changes in Ace Payroll, please refer to our guide on See Managing annual holiday entitlements (myob.com) here.
Additionally, adjusting the employee's leave setup in their profile will update historic leave balances on pay slips to reflect the new arrangement. To view the original pay slip before the change in the employee's leave profile, you would need to restore a backup from that period and reissue a copy.
More information can be found on MBIE website regarding managing Leave Entitlements Managing annual holidays | Employment New Zealand
Best regards, Amy