How to make a timecard start at the beginning of the time period instead of hire date

Summary:

We have noticed that if an employee has a hire date in the middle of the week Oracle will start their timecard as of this day. This is causing issues for our Compensatory and Over Time calculations as it considers the timecard start date as the start of our 7 day calculation period instead of the start of the time period. In the example below the time period should start as of 4/16, but the employee was hired as of 4/20. Is there a way to make the time card start as of the time period start instead of hire