Use of weekly periods.
Use of weekly periods. With respect to a category of employees for whom an employer uses the monthly measurement method, an employer may determine full-time employee status for a calendar month based on hours of service over a period that:
(i) Begins on the first day of the week that includes the first day of the calendar month, provided that the period over which hours of service are measured does not include the week in which falls the last day of the calendar month (unless that week ends with the last day of the calendar month, in which case it is included); or
(ii) begins on the first day of the week immediately subsequent to the week that includes the first day of the calendar month (unless the week begins on the first day of the calendar month, in which case it is included), provided the period over which hours of service are measured includes the week in which falls the last day of the calendar month.