Kill the "work week" concept too while we're at it. Are we seriously going to continue the fallacy that humans only work on specific religiously appointed days?
Just start moving to results only work environments.
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.
Removing well-defined restrictions on work usually results in an explicit or implicit negotiation for working conditions, which usually results in less favorable conditions for the party with the weaker negotiating position (workers).
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.