Here are some links that may be of use when dealing with public holidays.
For employees who are working on public holidays refer to: How do I pay an employee for working on a Public Holiday?
For employees who have not worked on the public holidays, refer to: How do I pay an employee who is not working on a Public Holiday?
For FlexiTime's automated Public Holiday processing based on Otherwise Working Days refer to: Public Holidays and Otherwise Working Days.
Or check out our handy webinar on how public holiday processing works in FlexiTime: