Paid days: the total days that are paid (based on the configuration of what is considered paid days - see this article) the paid days could consist of: work days, paid leave (such as sickness paid, vacation paid, etc) and paid calendar holiday. https://help.hibob.com/hc/en-us/articles/4409792299921-View-and-configure-Paid-days-and-Paid-hours
Paid Hours: The same as in days, but total hours considered as paid.
Days worked: Actual days the employee showed up (reported In/Out),
Hours worked: Total hours worked (which include regular/normal hours and overtime hours),
Regular hours: Total hours paid as per the employee’s expected attendance on that day (which could be based on the site working pattern or the employee’s specific working pattern).
Overtime: Any hours that exceed the employee’s expected attendance on a given day (anything over Regular hours). Overtime could be an excess of hours worked on a daily or a weekly threshold.
Potential Days/Hours: Days/Hours the employee is expected to show up.