The only effect that will have is that you'll be working 7 days per week. That religious influence is - for once - actually a positive one. Quite a few bits of our social contracts have their root in ancient history and religion played a larger part back then then it does today (for most people, anyway).

That does not make them bad per-se, they should be looked at independent of their roots.

Just like 'thou shalt not kill' isn't a bad idea just because it happens to be in the bible.