Hourly wage must be set – If an employee’s hourly wage is 0, update it under People > Employees > Edit Employee group > Wage type: Hourly wage. Read more: How to assign and update your employees' hourly wages.

Salaried employees need a special setting – If the supplement should apply to salaried employees, ensure “Affects salaried employee” is enabled in the payroll supplement’s settings.

The employee is paid per hour: If an employee is paid per shift, Payroll supplements can’t be applied. To change the wage type of an employee, go to People > Employees > Click on the employee’s name > Edit the employee group and change the Wage type to Hourly wage.
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Shift types must allow supplements – Go to Settings > Schedule > Shift types > Edit Shift type and enable Payroll supplement for the relevant shifts. If you can’t see this option, reach out to our Support team who can activate it for you.

Validity dates should be correct – Check the Valid from/to dates in Settings > Payroll > Payroll supplements to ensure the supplement is active.

Payroll period must be unlocked – Supplements won’t apply to locked payroll periods.

"Enforced Payment" setting – If multiple supplements apply at the same time, only the highest-value one is used unless Enforced payment is enabled in Settings > Payroll > Payroll supplements.
For example, Employee A gets supplement A, that is 4,50 € an hour. It's higher than supplement B, that would give them 3,75 € an hour. Because the option "Enforced payment" is not enabled on supplement B, then supplement A takes precedence over the other one, because it has the highest value.

Check "Enforced Payment" – If multiple supplements apply to the same shift, the highest-value one is chosen unless Enforced Payment is enabled for both.
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Holiday Calendar settings – If a supplement applies to both Bank holidays and specific weekdays, it may be applied twice when a Bank holiday falls on that day. Adjust settings in Settings > Your organisation > General > Bank Holiday calendar.
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As an example, if you selected the day Monday and a Bank holiday day falls on a Monday, then the supplement will be applied twice, once because it's a Monday and once because it's a Bank holiday day.
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If a supplement is applied on a Bank holiday day, the scheduled hours to which the supplement is applied are the hours used for Payroll, unless the number of hours entered for a Bank holiday day is higher.

You can choose the number of hours for a Bank holiday day by navigating to Settings > Your organisation > General > Bank Holiday calendar > Edit holiday > Edit day > Add value to the field How many hours is the day.
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Manual & automated supplements overlapping – If both types apply, you may need to:

Week-based and Day-based supplements – If both apply at the same time, exclude day-based overtime hours from the week-based supplement by linking them to a separate shift type.

Included: Normal supplements, Manual supplements, and Contract rules supplements are included in the payroll costs in the schedule.

Not Included: Week-based, Day-based, Personal, and Seniority supplements are not included in the payroll costs in the schedule because they are spread out across the shifts.

Check the payment period – If the supplement should apply immediately when contracted hours are exceeded, the From field in the payment period must be set to 0.
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Check the contract rule start date – If the interval starts on a day other than Monday (e.g., Friday), the system counts hours from Friday to Thursday instead of a standard week. Update this in Settings > People > Contract rules > Edit Interval.
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