Question:
If I don't offer my service on Sundays and a client wants the job done on Sunday, can I charge him an extra emergency fee? Similarly, if my normal turnaround time is 2 days and the client wants the job done in one day, can I charge him a rush fee?
Answer:
Hello,
This is not ribbis, as ribbis is only if one charges extra for the the other person having your money. Charging extra for working over time or off hours is a service charge, not ribis.
Best wishes