Day Rate Calculation for Shift Workers

Summary:

Customer has shift workers that are pay an annual salary. Day Rate is calculated as annual salary divied by 182.5 days in a year. Some of these employees work 4 days on and 4 days off rotations and have a work schedule reflecting this.

I am looking for how day rate can be derived when working out proration for starters, leavers and mid-period updates.

Have you done it and able to share formula, configuration, documentation to help my understanding?

Content (required):

Customer has shift workers that are pay an annual salary. Day Rate is calculated as annual salary divied by 182.5 days in a year. Some of these employees work 4 days on and 4 days off rotations and have a work schedule reflecting this.