Front-End or Back-End Payments?

Is the model that I proposed in the last post biblical (given the blocked quote below)?

"Pay him his wages each day before sunset, because he is poor and is counting on it. Otherwise he may cry to the LORD against you, and you will be guilty of sin." - Deuteronomy 24:15

Eventhough, the benefit may be greater if paid on the back-end is it at all in violation? Arguments for and against are all welcome.